What is the initial velocity in the problem below: "A car traveling initially at 7.0 m/s accelerates to velocity of 12.0 m/s in 2.0 s. What is the average acceleration of the car?

Answers

Answer 1

Answer:

\(a=2.5\ m/s^2\)

Explanation:

Given that,

Initial velocity, u = 7 m/s

Final velocity, v = 12 m/s

Time, t = 2 s

We need to find the average acceleration of the car. The acceleration of an object is equal to the rate of change of its velocity. It can be given by :

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{12-7}{2}\\\\a=2.5\ m/s^2\)

So, the acceleration of the car is \(2.5\ m/s^2\).


Related Questions

HELLO QUESTION 9 PLEASE HELP

HELLO QUESTION 9 PLEASE HELP

Answers

Answer:

Explanation:

it's B)  or the question right above the one you've marked.   The planets do form a plane almost exactly :0   but not a sphere.  

A 19.7 kg sled is pulled with a 42.0 N force at a 43.0° angle, across ground where μ₁ = 0.130.
What is the normal force on the sled?

Answers

The following information is provided in the problem: A sled with a weight of 19.7 kg is pulled with a force of 42.0 N at an angle of 43.0° across ground where μ₁ = 0.130. We need to find out the normal force that is exerted on the sled.

Let us examine each of the forces acting on the sled.The weight of the sled is equal to its mass multiplied by the acceleration due to gravity. Therefore, the weight of the sled is:mg = 19.7 kg x 9.8 m/s² = 193.06 N.The force exerted on the sled can be divided into two components: one that is parallel to the ground and one that is perpendicular to the ground.The force parallel to the ground is:F₁ = 42.0 N x cos(43.0°) = 30.56 N.The force perpendicular to the ground is:F₂ = 42.0 N x sin(43.0°) = 28.30 N.The frictional force is equal to the coefficient of friction multiplied by the normal force. Therefore, we need to find the normal force on the sled in order to calculate the frictional force. Since the sled is not accelerating vertically, the normal force is equal to the weight of the sled plus the force perpendicular to the ground. Therefore, N = mg + F₂N = 193.06 N + 28.30 N = 221.36 N.The frictional force is:Fr = μ₁ x NFr = 0.130 x 221.36 N = 28.77 N.Thus, the normal force exerted on the sled is 221.36 N.

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A transmitter has an output of 2 W at a carrier frequency of 2 GHz. Assume that the transmitting and receiving antennas are parabolic dishes each 3 ft in diameter Assume that the efficiency of each antenna is 0.55. (a) Evaluate the gain of each antenna. (b) Calculate the EIRP of the transmitted signal in units of dBW. (c) If the receiving antenna is located 25 miles from the transmitting antenna over a free-space path, find the available signal power out of the receiving antenna in units of dBW.

Answers

The gain of each antenna is 75.045.

The EIRP of the transmitted signal is 21.77 dBW.

The available signal power out of the receiving antenna is -67.12 dBW.

(a) To evaluate the gain of each antenna, we can use the formula:

Gain = (4 * π * Efficiency * (D/λ)^2),

where Efficiency is the efficiency of each antenna, D is the diameter of the antenna, and λ is the wavelength.

Given:

Efficiency = 0.55,

Diameter (D) = 3 ft = 0.9144 m,

Carrier Frequency (f) = 2 GHz = 2 * 10^9 Hz.

The wavelength (λ) can be calculated using the formula:

λ = c / f,

where c is the speed of light.

c = 3 * 10^8 m/s.

Substituting the values into the formulas:

λ = (3 * 10^8 m/s) / (2 * 10^9 Hz) = 0.15 m.

For each antenna:

Gain = (4 * π * 0.55 * (0.9144 m / 0.15 m)^2).

Calculating the gain for each antenna:

Gain = 75.045

The gain of each antenna is 75.045.

(b) EIRP (Equivalent Isotropically Radiated Power) can be calculated using the formula:

EIRP = Transmitter Power (in watts) * Antenna Gain (in linear scale).

Given:

Transmitter Power = 2 W,

Antenna Gain = 75.045 (in linear scale).

EIRP = 2 W * 75.045 = 150.09 W.

To convert EIRP to dBW:

EIRP (dBW) = 10 * log10(EIRP) = 10 * log10(150.09) = 21.77 dBW.

The EIRP of the transmitted signal is 21.77 dBW.

(c) The available signal power out of the receiving antenna can be calculated using the Friis transmission equation:

Pr = Pt * (Gt * Gr * λ^2) / (16 * π^2 * R^2),

where Pr is the received power, Pt is the transmitted power, Gt and Gr are the gains of the transmitting and receiving antennas respectively, λ is the wavelength, and R is the distance between the antennas.

Given:

Pt = 2 W,

Gt = Gr = 75.045 (in linear scale),

λ = 0.15 m,

R = 25 miles = 40.2336 km.

Converting R to meters:

R = 40.2336 km * 1000 = 40233.6 m.

Substituting the values into the formula:

Pr = (2 W * (75.045 * 75.045 * (0.15 m)^2)) / (16 * π^2 * (40233.6 m)^2).

Calculating Pr:

Pr = 4.0004e-6 W.

To convert Pr to dBW:

Pr (dBW) = 10 * log10(Pr) = 10 * log10(4.0004e-6) = -67.12 dBW.

The available signal power out of the receiving antenna is -67.12 dBW.

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A steel railroad track has a length of 25 m
when the temperature is 0°C.
What is the increase in the length of the
rail on a hot day when the temperature is
30°C? The linear expansion coefficient of
steel is 11 x 10-6 (°C) -¹
Answer in units of m

Answers

The length of the rail will rise by 0.00825 meters, or 8.25 millimeters, on a hot day with a temperature of 30°C.

What is temperature?

Temperature is a unit of measurement for how hot or cold an object or system is. The average kinetic energy of the particles in a substance or system is expressed by this physical quantity.

How do you determine it?

The following formula can be used to determine the lengthening of the rail:

ΔL = αLΔT

where L is the length that has been added, is the linear expansion factor, L is the initial length, and T is the temperature change.

Given:

L = 25 m (original length)

ΔT = 30°C - 0°C = 30°C (change in temperature)

α = 11 x 10^(-6) (°C)^(-1) (linear expansion coefficient)

In the formula, changing the values:

ΔL= (11 x 10(-6) (°C)(-1)) x (25 m) x (30°C).

ΔL = 0.00825 m

Consequently, the length of the rail will rise by 0.00825 meters, or 8.25 millimeters, on a hot day with a temperature of 30°C (rounded to two decimal places).

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For the composite member of prob. 4. 37, determine the largest permissible bending moment when the member is bent about a vertical axis

Answers

The largest permissible bending moment for the composite bar is 0.083 Nm for the aluminum section and 0.000396 Nm for the brass section when the bar is bent about a vertical axis.

To determine the largest permissible bending moment for the composite bar, we need to calculate the moment of inertia for each material separately and use the parallel axis theorem to find the total moment of inertia.

The moment of inertia for the aluminum section is 5.19 × \(10^{-9}\)\(m^{4}\) and for the brass section is 1.23 × \(10^{-11}\)\(m^{4}\). The total moment of inertia for the composite bar is 5.22 × \(10^{-9}\) \(m^{4}\).

Using the allowable stress and moment of inertia, we can find the largest permissible bending moment for each section. For the aluminum section, the largest permissible bending moment is 0.083 Nm, and for the brass section, it is 0.000396 Nm.

Therefore, the largest permissible bending moment for the composite bar is 0.083 Nm for the aluminum section and 0.000396 Nm for the brass section, when the bar is bent about a vertical axis.

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define inertia.mention it's types​

Answers

Answer:

It is the inability of the body to change by itself its state of rest or uniform motion or direction. Types of Inertia- It is of three types-(1)Inertia of rest (2) Inertia of motion(3) Inertia of direction. (1) Inertia of rest - It is the inability of the body to change by itself its state if rest.

A person’s blood type depends on the type of protein marker, called an , found on the cell membranes of the red blood cells.

Answers

Called an Antigen found on

A person’s blood type depends on the type of protein marker, called an  Antigen, found on the cell membranes of the red blood cell.

What is antigen?

A molecule known as an antigen is one that triggers the formation of an antibody and the immune system's response.

Large protein molecules known as antigens are found on the surface of pathogens like bacteria, fungi, viruses, and other foreign substances. When these dangerous substances enter the body, the body's immune system reacts by producing antibodies.

The ABO system distinguishes 4 major blood types:

Blood group O - has no antigens, but both anti-A and anti-B antibodies in the plasma. Blood group AB - has both A and B antigens, but no antibodies.Blood group A - has A antigens on the red blood cells with anti-B antibodies in the plasma. Blood group B - has B antigens with anti-A antibodies in the plasma.

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What is an element and comepounds

Answers

An ELEMENT is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A COMPOUND consists of two or more types of elements held together by covalent or ionic bonds.

Answer:

Explanation:

Element: consists of only one kind of atom, can't be broken down into a simple type of matter by either physical or chemical means and can consist as either atoms or molecules

Compound: consists of atoms of two or more different elements bound together, can be broken down into simpler types of matter by chemical means BUT not by physical means, has properties that are different from its component elements and always contain the same ratio of its component atoms.

scott travels north 5 miles, then goes west 3 miles, and then goes south for 2 miles.

what is the distance he went?
10 miles
8 miles
7 miles
6 miles

Answers

scott traveled 10 miles

7. a. Explain how Trina and Fan could calculate the change in energy in Flask 1.
b. Create a computational model to show how the energy change in Flask 1 relates to
the energy change in Flask 2.

Answers

a) Trina and Fan would need to consider the specific context and properties of Flask 1 to determine the types of energy involved.

b) By running the computational model, Trina and Fan could observe how changes in Flask 1's energy affect Flask 2 and vice versa.

a. Trina and Fan can calculate the change in energy in Flask 1 by considering the initial and final states of the system. The change in energy is typically calculated using the formula:

ΔE = E_final - E_initial

To calculate the change in energy, they need to determine the initial energy and final energy of Flask 1. The energy of a system can include various forms such as potential energy, kinetic energy, and thermal energy.

Trina and Fan would need to consider the specific context and properties of Flask 1 to determine the types of energy involved. For example, if Flask 1 contains a fluid that is being heated, they would need to consider the initial and final temperatures and the specific heat capacity of the fluid to calculate the change in thermal energy.

b. To create a computational model showing how the energy change in Flask 1 relates to the energy change in Flask 2, Trina and Fan would need to consider the interactions and energy transfers between the two flasks. They could develop a simulation or computational algorithm to track the energy changes in both flasks over time.

The model would need to take into account the specific conditions and processes occurring in the two flasks. For example, if Flask 1 is a heat source and Flask 2 is a heat sink, they would need to model the transfer of thermal energy from Flask 1 to Flask 2.

The computational model could involve equations and algorithms that represent the energy transfer mechanisms such as conduction, convection, or radiation. They would need to consider the material properties, surface areas, and temperature differences between the flasks to accurately simulate the energy flow.

By running the computational model, Trina and Fan could observe how changes in Flask 1's energy affect Flask 2 and vice versa. They could analyze the data and results to understand the relationship between the energy changes in the two flasks and identify any patterns or trends.

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A planet is most likely to have tectonic activity if it has:.

Answers

Answer: Heyo Kenji Here! Here's your answer- A planet is most likely to have tectonic activity.

Explanation: Hope this helps!

Have a nice day!

- Kenji ^^

the nurse prepares a parenteral medication for a patient. for which reason should the nurse insert the needle at a 45 degree angle

Answers

The nurse should insert the needle at a 45-degree angle to ensure proper medication administration into the subcutaneous tissue.

When administering a subcutaneous injection, the nurse inserts the needle at a 45-degree angle to ensure proper medication administration. This angle allows for even distribution of the medication in the subcutaneous tissue, facilitating absorption and therapeutic effect. The subcutaneous tissue has a rich blood supply, and the medication is absorbed through capillaries in this layer. The 45-degree angle ensures that the medication reaches the appropriate depth without hitting muscle or bone. It also balances effective delivery with patient comfort, minimizing pain and tissue trauma. Inserting the needle at a steeper angle could cause the medication to be delivered too deeply, potentially causing discomfort or injury. Proper injection techniques, including selecting the correct needle length and angle, are crucial for safe and accurate administration of subcutaneous medications.

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How does temperature change from planets to planets in our solar system?

Answers

The further a planet is from the Sun, the colder its surface temperatures tend to be. Venus is an exception, since it has the highest surface temperature in our solar system due to its close closeness to the Sun and its thick atmosphere.

What was the temperature of the solar system when the planets first formed?

The inner planets are rocky, whereas the outer planets are gaseous, which can be attributed to the early solar system's temperature. The solar system's temperature increased as the gases came together to create a protosun. Temperatures in the inner solar system reached 2000 K, whilst in the outer solar system, it was only 50 K.

The quantity of heat received is just one of many intricate aspects that go into determining the temperature.

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Calculating the Magnitude of the Resultant Vector
R
13 m
5m
What is the magnitude of the resultant vector? Round
your answer to the nearest tenth.
m

Answers

The magnitude of the resultant vector is 13.9m.

The size of the resulting vector can be determined using the Pythagorean theorem. As you can see from these two examples, the result of adding three or more rectangular vectors is easy to determine using the Pythagorean theorem. The vectors should be added in a different order. Equation 2 Subtracts the vectors in opposite directions from each other to get the resulting vector.

Where vector B is in the opposite direction to vector A and R is the resulting vector. The resulting vector is defined as a single vector that produces the same effect as many vectors produced together. The size of a vector is the length of the vector. The absolute value of vector a is represented by |a|. For more information on vector sizes, see Vectors overview. The formulas for the sizes of 2D and 3D vectors in terms of coordinates are derived on this page.

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An 1876 N crate is being pushed across a level force at a constant speed by a force of 747 N. What is the coefficient of kinetic friction?

0.16
0.40
0.08
not enough information

Answers

The crate only moves horizontally, so its net vertical force is 0. The only forces acting in the vertical direction are the crate's weight (pointing downward) and the normal force of the surface on the crate (pointing upward). By Newton's second law, we have

F (vertical) = n - mg = 0   →   n = mg = 1876 N

where n is the magnitude of the normal force.

In the horizontal direction, the crate is moving at a constant speed and thus with no acceleration, so it's completely in equilibrium and the net horizontal force is also 0. The only forces acting on it in this direction are the 747 N push (pointing in the direction of the crate's motion) and the kinetic friction opposing it (pointing in the opposite direction). By Newton's second law,

F (horizontal) = 747 N - f = 0   →   f = 747 N

The frictional force is proportional to the normal force by a factor of the coefficient of kinetic friction, µ, such that

f = µn   →   µ = f / n = (747 N) / (1876 N) ≈ 0.398188 ≈ 0.40

1.

How do the individual forces compare when the rider experiences a normal

sensation of weight? What is the acceleration value when this occurs?

Answers

Answer:

The rider experiences weight or does not experience weight depends upon the direction of the elevator in which it moves and its acceleration.  

Explanation:

Consider the mass of a rider as m. So its actual weight is mg and it acts vertically downward. The apparent weight of the rider is depended on the acceleration of the elevator and its direction of movement.

When elevator moves with a constant speed i.e. its acceleration is zero, the apparent weight of the rider is equal to the actual weight. Thus the rider's sensation is normal.

If the elevator is moving upward with an acceleration a, then the apparent weight of the rider will be more and the rider will experience an increase in weight or the sensation is heavy.

Or when the elevator moves downward with an acceleration a, the apparent weight of the rider is less. And the rider sensation is lighter.

The acceleration will become "0 (zero)". A further solution to the question is provided below.

Individual pressures neutralize or negate each other out if somehow the riding experiences stable weight, implying that perhaps the rider's cumulative acceleration will be zero,

Now,

→ \(mg= W+F\)

or,

→ \(g= a+g\)

then,

→ \(a =0\)

This means that the rider isn't moving. Thus the response above is appropriate.

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pls help thank you ​

pls help thank you

Answers

Punching a bag is a suitable example of the situation when the force applied to change shape of an object.

Fast cooling rates tends to promote transformations that result in relatively course structures (e.g. for a reaction resulting in multiple product phases, the secondary phase particles are (i) fewer in count (ii) larger in size and (iii) relatively spherical). True or False
For most materials, the formation of a glass from a liquid typically requires extremely slow cooling rates, thereby taking on the order of years or even centuries to produce. True or False
For a system below its melting point, a glass (or non-crystalline / amorphous) configuration is the most energetically stable state that is possible, since it offers the lowest Gibbs free energy for all possible solid configurations. True or False
When measured experimentally, most materials tend to exhibit the same exact temperature value for both melting and freezing (crystallization). True or False
Gray iron is a microstructure that tends to result when a cast iron of appropriate composition is cooled fairly quickly. True or False
Coarsening refers to the scenario where, upon heating and/or annealing for sufficient time, the scale of a microstructure tends to reduce (e.g. grains become smaller, secondary phase particles separate into smaller particles and become more finely dispersed, often reverting to high aspect ratio or high surface-area-to-volume ratio configurations. True or False

Answers

Answer:

1) correct answer is ii  larger size

2) false, 3) false, 4) true, 5) true, 6) true

Explanation:

In this exercise, the answer is asked if the statement is true.

1) in the rapid cooling speed, there is no thermodynamic equilibrium, so the secondary phases do not have time to transform into the main one, therefore many phases appear in the products,

the correct answer is ii

2) False. The transformation of a material to the glass state requires a fixed temperature and rapid changes to reach this temperature,

3) False. The most stable state is the crystalline state, the glass states are metastable, their Gibbs energy is not the lowest possible and they must transition to the crystalline state over time, it can be years or centuries.

4) True. The melting and freezing temperatures change for each material, within the same material it always has the same value, since it corresponds to a change in the state of the system.

5) true. Cast iron is called gray because of the impurities inside that have not had time to move due to rapid cooling.

6) True. The microstructure is reduced in the process of cooling and heating

State the Newton law of gravitation.​

Answers

Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them. ...

a heating element in a toaster dissipates 900 w when run at 120 v . part a how much charge passes through the heating element in 1.0 minute? express your answer with the appropriate units.

Answers

The question involves electricity basics, specifically the relationship between power, voltage, current, and charge. The heating element in a toaster dissipates 900 watts of power when run at 120 volts. To determine how much charge passes through the heating element in 1.0 minute, we need to use the relationship between power, voltage, and current, which is given by the equation:P = IVwhere P is the power, V is the voltage, and I is the current. We can rearrange this equation to solve for the current:I = P / VSubstituting the given values, we get:I = 900 W / 120 V = 7.5 AThis means that the heating element is drawing a current of 7.5 amperes from the power source. To determine how much charge passes through the heating element in 1.0 minute, we can use the relationship between current and charge, which is given by the equation:Q = Itwhere Q is the charge, I is the current, and t is the time. Substituting the given values, we get:Q = (7.5 A) x (60 s) = 450 CTherefore, 450 coulombs of charge pass through the heating element in 1.0 minute. The coulomb is the SI unit of electric charge, and is defined as the amount of charge that passes through a conductor in one second when a current of one ampere is flowing.

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The amount of charge that passes through the heating element in 1.0 minute is determined by the current, which is the rate of the flow of charge.

The current can be determined through the equation I = P/V, where P is the power (900 W in this case) and V is the voltage (120 V in this case). Thus, the current is 7.5 A.

Since charge (Q) is equal to current (I) multiplied by time (t), we can calculate the amount of charge that passes through the heating element in 1.0 minute by multiplying 7.5 A by 1.0 min, which is equal to 7.5 C. Thus, 7.5 C of charge passes through the heating element in 1.0 minute when the toaster is run at 120 V and dissipates 900 W.

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what is the maximum height reached by the ball? 400 correct: your answer is correct. ft what is the velocity of the ball when it is 384 ft above the ground on its way up? (consider up to be the positive direction.) 32 correct: your answer is correct. ft/s what is the velocity of the ball when it is 384 ft above the ground on its way down? (no response) ft/s when will the ball hit the ground? t

Answers

The primary indicator of an object's position and speed is its velocity.It is the distance that an object travels in one unit of time.The displacement of the item in one unit of time is the definition of velocity.

what is the maximum height reached by the ball?

Smax = 400 feet.

c) v = 32 ft/s

c) v = - 32 ft/s

(a)

The following is the function provided for ball height:

s = 160 t - 16 t²

Therefore, we must take the derivative with respect to t and make it equal to zero in order to get the time to reach maximum height (in-flexion point):

So, 160 - 32 t = 0, 32 t = 160 t, and 160/32 t = 5 sec.

As a result, the maximum distance is covered every 5 seconds.

Smax = (160)(5) - (16)(5)²

Smax = 800 - 400

Smax=400 feet

b)First, we determine the speed at which the ball travels 384 feet.

384 = 160 t - 16 t

16 t² - 160 t + 384 = 0

Quadratic Equation Solving:

Either:

t = 6 sec

or t = 4 seconds

Since it takes 5 seconds to reach the highest point,

t then equals 5 seconds.

t then equals 4 seconds.

Now, by taking a derivative of ods with respect to t at 4 sec, we can find velocity:

v = 160 - 32 t

v = 160 - (32)(4)

v = 32 ft/s

c,Because t = 6 s > 5 s

The second number of t = 6 sec must represent the point in the ball's downward motion when it is 384 feet above the earth.

So, at that moment, velocity will be:

v = 160 - (32)(6)

v = -32 ft/s

downward motion is a bad sign.

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The school bus slows from 60 km/h to 40 km/h when entering the school zone.
Given that this change of speed occurred over 8 seconds, calculate the average deceleration of the bus.

Answers

To calculate the average deceleration of the bus, we can use the following formula:

Average deceleration = (Final velocity - Initial velocity) / Time taken

Here, the initial velocity (v1) is 60 km/h, the final velocity (v2) is 40 km/h, and the time taken (t) is 8 seconds. To make the units consistent, we'll convert the velocities from km/h to m/s.

1 km/h = 1000 m / 3600 s = 5/18 m/sv1 = 60 km/h * (5/18) = (60 * 5) / 18 = 50/3 m/s v2 = 40 km/h * (5/18) = (40 * 5) / 18 = 100/9 m/s

Now, we can plug the values into the formula:

Average deceleration = (v2 - v1) / t Average deceleration = ((100/9) - (50/3)) / 8

Now, we'll find a common denominator for the fractions and simplify:

Average deceleration = ((300 - 450) / 27) / 8 = (-150 / 27) / 8Lastly, we'll divide the fraction by 8:Average deceleration = -150 / (27 * 8) = -150 / 216

So, the average deceleration of the bus is approximately -150/216 m/s².

antangonists function by?

Answers

Answer:7777

Explanation:

Answer:

Explanation:

An antagonist does the opposite of an agonist. It binds to receptors, and stops the receptor from producing a desired response.

Laura is riding her bike at a speed of 15 m/s when she spots a dog in his path. If she needs to come to a full stop in 3 seconds what must her deceleration be?

Answers

The deceleration of Laura is obtained as - 5m/s^2.

What is the deceleration?

We know that the deceleration would have to be the rate of the decrease in the speed of the object with time. We would use the formula for the acceleration to be able to obtain the deceleration of the object as follows;

a = v - u/t

a = deceleration

v = final velocity

u = initial velocity

t = time taken

Then;

a = 0 - 15/3

a = - 5m/s^2

Thus she would have a deceleration of - 5m/s^2 from the calculation that we have done above.

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A. It Implies That M Is Finitely Generated. B. It Implies That M Has Nonzero Elements Of Nonzero Order. C. When Every Non-Null Element Has Null . D. In The Case That The Ring R Is A Body. E. None Of The Above Alternatives Gives A
Which of the following alternatives give a true statement. Justify your answer.
A modulus M over a ring R has a finite basis:
a. It implies that M is finitely generated.
b. It implies that M has nonzero elements of nonzero order.
C. When every non-null element has null .
d. in the case that the ring R is a body.
e. None of the above alternatives gives a true statement.
Which of the following statements are true?
a. If a subset of a module generates that whole module, then the subset cannot be
empty.
b. Every submodule S of a module M verifies the inequality C. Two different subsets of M have to generate two different submodules of M.
d. If S generates a submodule N of the module M, then contains S.
e. Neither statement is true.

Answers

The correct answer is e. None of the above alternatives gives a true statement. None of the statements in options a, b, c, and d are true when it comes to a modulus M over a ring R having a finite basis.

When a modulus M can be formed entirely from a finite set of elements, the modulus M is said to be finitely generated. M's finite basis does not, however, automatically imply that M is finitely generated. A basis is a set of linearly independent elements, and it might not be enough to produce all of the components of the modulus.

According to the assertion in option b, M must include nonzero items of nonzero order if it has a finite basis. This is untrue, though. The smallest positive number k, such that the element raised to the power of k equals the identity element, is referred to as the order of an element.

According to option c, every non-null element in a modulus with a finite basis has a null. Nevertheless, this claim is likewise untrue. It is possible for a modulus with a finite basis to have non-null elements without a null element.

According to option d, a ring R is a body, or a field, and only then can a modulus have a finite basis. However, this assertion is also untrue. Even though the ring R is not a field, a modulus can nonetheless have a finite basis. None of the given alternatives provides a true statement about a modulus M over a ring R having a finite basis.

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another A b c or d about the earth...

another A b c or d about the earth...

Answers

Answer:

B seismic wave

Select the correct answer. Why does a solid change to liquid when heat is added? A. The spacing between particles decreases. B. Particles lose energy. C. The spacing between particles increases. D. The temperature decreases.

Answers

Answer:

The right answer is c because when we heat solid object the molecule will start lose attraction on object

Explanation:

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a small, circular ring of wire (shown in blue) is inside a larger loop of wire that carries a current i as shown. the small ring and the larger loop both lie in the same plane. if current i increases, the current that flows in the small ring group of answer choices is clockwise and caused by self-inductance. is counterclockwise and caused by mutual inductance. is counterclockwise and caused by self-inductance. is clockwise and caused by mutual inductance.

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The current flowing through larger loop of wire creates a magnetic field. When the current increases, magnetic field also increases, which induces a current in smaller ring of wire through phenomenon of electromagnetic induction.

In this case, if induced current flows in opposite direction to the current in the larger loop, it is counterclockwise, and it is caused by self-inductance. On other hand, if induced current flows in the same direction as current in larger loop, it is clockwise and caused by mutual inductance. Self-inductance occurs when a changing current in a wire induces a voltage in the same wire, while mutual inductance occurs when the changing current in one wire induces a voltage in another wire in close proximity.

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when you changed from elastic material to string, what effect did this have on the duration of the impulse? what affect did this have on the maximum size of the force? can you develop a general rule from these observations?

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when you switched from elastic material to string, the effect is that the elasticity of the two materials is different, because impulse is a physical vector quantity defined as the product of the average force applied to a body and the time interval. Impulse can also be defined from the variation in the amount of movement suffered by a body.

"What is Impulse in physics?

Impulse is a physical quantity that measures the change in the amount of movement suffered by a body on which a force acts (F) during a time interval (Δt). Impulse is a vector quantity, that is, it has magnitude, direction and direction, and its unit in the international system of units (SI) is kg.m/s or, simply, N.s.

The main use of momentum in Physics is aimed at the study of collisions between bodies. During collisions, it is common for the mutual forces exerted between the bodies to be variable, making it necessary to use the impulse to calculate the velocities or the quantities of movement of the bodies involved in the collisions. The idea is simple: if we can measure the time interval of a collision, we will be able to determine the average value of the force exerted on the bodies."

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Coffee or certain cola drinks can be used to test the effect of __________ on reaction time. What drug completes the sentence?

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Answer:

"caffeine"    both products contain this compound

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