Bill is making waves on a rope with one end attached to a wall. When he starts moving the rope quickly, the frequency of the waves created on the rope doubles. What happens to the energy that is transferred to the wall when the frequency of the waves doubles?
a. halved
b. quadrupled
c. doubled
d. tripled

Acceleration = (change in speed) divided by (time for the change)

Change in speed = (50 km/h)-(30 km/h)

Change in speed = 20 km/h

Acceleration = (20 km/h) / (4 h)

Acceleration = 5 km per hour-squared

\(\Large{\red{\bf{\blue{\dag} Answer:-}}}\)

Newton's First Law of Motion :

An object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

Here this statement is best represented by the statement : Unbalanced forces cause an object to move. [ option c ]

More to know :-

Newton's 3 laws of motion :-

Newton's First Law of Motion :-

It states that an object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

Ex - (i) We tend to fall backwards while standing in the bus , when it starts suddenly.

(ii) We tend to fall forward while standing in the bus , when it stops suddenly.

Newton's Second Law of Motion :-

It states that the rate of change of momentum is directly proportional to the applied force in the direction of the force . That is ∆p \(\propto\) Force .

Ex - (i) When we push car & a truck with same force the car will have Greater acceleration due to less mass . (Imaginary case ).

(ii) We feel easy to push a empty cart than a full cart .

Newton's Third Law of Motion :-

It states that every action has equal and opposite reaction .

Ex - (i) We are able to walk on ground due to Newton's third law of motion .

(ii) When we push wall it also applies equal and opposite force .

"Unbalanced forces cause an object to move " is the sentence that describes Newton's first law.

   A body remains in the state of rest or uniform motion in a straight line unless and until an external force acts on it.

      The object is to be rest if the velocity and acceleration are zero.  When an object is in motion, velocity is not equal to zero (v ≠ 0) but acceleration (a = 0) is equal to zero. Therefore, the object will continue in motion with constant velocity in the same direction.

Example:

      If we jump from a bus while moving, our body will be like still moving in the same direction of the vehicle. When your feet hit the ground, the grounds act on your feet and stop moving. You will fall because the upper part of your body didn't stop and you will fall in the direction you were moving.

     If the object have the greater mass, then the object will have more inertia. Forces can change the object's motion.

Hence, Option D is the correct answer.

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Answer:

11:10 will be the time. reflection causes the object to be flipped when you see its image at the mirror

Answer:

25.98

Explanation:

right answer

The horizontal displacement of the projectile is 25.98 m.

The given parameters;

angle of projection Ф = 30°

initial velocity of the projectile, u = 15 m/s

time of motion, t = 2 seconds

The horizontal displacement of the projectile is calculated as follows;

\(X = v_0_x \times t\\\\X = v_0 cos (\theta) \times t\\\\X = 15\times cos (30) \times 2\\\\X = 25.98 \ m\)

Thus, the horizontal displacement of the projectile is 25.98 m.

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Answer:

position speed and direction

Explanation:

hope that helps =)

also i love your profile pic i love fnaf myself!!!!

Troposphere, stratosphere, mesosphere, thermosphere and exosphere.

Earth's atmosphere has five major layers.

From lowest to highest, layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.

a) What are the conditions in the troposphere?

The atmospheric temperature descends upward with a slope of ~10 K km−1 for dry air and ~7 K km−1 for wet air in troposphere.

The temperature of troposphere decreases with an increase in height.

B) What sort of temperatures would she experience in the stratosphere? What other layer is found within the stratosphere?

The temperature in the stratosphere ranges from- 60° F at the troposphere boundary to -5°F at the top.

The temperature increase is due to the ozone layer that absorbs ultraviolet light from solar radiation.

C)What sort of temperatures would she experience in the mesosphere?

The temperature in the mesosphere ranges from -2.5°C to -90°C

The temperature decreases because of a decrease in the absorption of penetrating solar radiation.

The atmosphere gets cooler with an increase in altitude because an increase in distance from the Earth's surface.

D)What sort of temperatures would she experience in the thermosphere? What other layer is found within the thermosphere?

4,500°F is the temperature of thermosphere.

Temperatures climb sharply in the lower thermosphere , then level off and hold fairly steady with increasing altitude above that height.

Temperatures in the upper thermosphere can range from about 500° C (932° F) to 2,000° C (3,632° F) or higher.

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The other force acting on the mass has x- and y-components of 5.27 N and 11.4 N respectively.

Force is the action of one body on another body, which causes it to accelerate, deform, or change direction. It is a vector quantity, meaning it has both magnitude and direction. Forces can be either contact forces, such as friction, or non-contact forces, such as gravity, electric and magnetic forces.

The acceleration of the mass can be broken down into its x- and y-components.
The x-component of the acceleration is:
ax = 5.48 cos(38.0°) = 4.28 m/s2
The y-component of the acceleration is:
ay = 5.48 sin(38.0°) = 3.51 m/s2
The x-component of the force is known and is given as 8.63 N.
The net force acting on the mass can be calculated using the equation:
Fnet = ma
The net force in the x-direction is:
Fnetx = m * ax = 3.25 * 4.28 = 13.9 N
The net force in the y-direction is:
Fnety = m * ay = 3.25 * 3.51 = 11.4 N
The remaining force in the x-direction is:
Fx = Fnetx - 8.63 = 13.9 - 8.63 = 5.27 N
The remaining force in the y-direction is:
Fy = Fnety = 11.4 N
Therefore, the other force acting on the mass has x- and y-components of 5.27 N and 11.4 N respectively.

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Answer:

Liquid water is essential for life to exist. Water can occur in a liquid state only within a specific temperature range, so knowing the temperature range on a planet will help astronomers predict whether life exists on that planet.

The angle θ0 at which the electron is incident between the two plates, we can use the relationship θ0 = arctan(E * L / (2d)).

determine the angle θ0 at which the electron is incident between the two plates, we can consider the forces acting on the electron due to the electric field.

The electric field between the plates is directed from left to right. The force experienced by the electron due to the electric field is given by the equation:

F = q * E

where F is the force, q is the charge of the electron, and E is the electric field strength.

Since the electron is negatively charged, it experiences a force in the opposite direction to the electric field. This force will cause the electron to accelerate in the opposite direction.

When the electron enters the region between the plates:

The force due to the electric field will act on the electron in the opposite direction to its initial motion, causing it to decelerate. The electron will follow a curved path due to this deceleration.

When the electron exits the region between the plates:

The force due to the electric field will act on the electron in the same direction as its final motion, causing it to accelerate. The electron will follow a curved path due to this acceleration.

Since the situation is symmetrical, the angle at which the electron exits the region between the plates will be the same as the angle at which it enters.

We need to determine the angle θ0 at which the electron enters the region between the plates.

Consider a small portion of the path between the plates and assume that the electric field is constant within this small region.

In this small region, the net force acting on the electron can be expressed as:

F_net = F_electric - F_centrifugal

where F_electric is the force due to the electric field, and F_centrifugal is the centrifugal force.

The force due to the electric field can be calculated as:

F_electric = q * E

The centrifugal force can be calculated as:

F_centrifugal = m * \(v^2 / r\)

where m is the mass of the electron, v is its velocity, and r is the radius of the curved path.

The electron is moving in a curved path, the net force acting on it is responsible for the centripetal force required to maintain this curved path.

Setting the net force equal to the centripetal force, we have:

F_electric - F_centrifugal = m * \(v^2 / r\)

Substituting the expressions for F_electric and F_centrifugal, we get:

q * E - m * v^2 / r = m * \(v^2 / r\)

Simplifying the equation, we have:

q * E = 2 * m * \(v^2 / r\)

Since the electron enters and exits the region between the plates with the same speed v, we can simplify further:

q * E = 2 * m *\(v^2 / r\)

The forces acting on the electron when it enters the region between the plates:

The force due to the electric field is acting in the opposite direction to the initial motion, causing deceleration.

The centrifugal force is acting in the same direction as the initial motion, opposing the deceleration.

For the electron to enter the region between the plates, the force due to the electric field must be greater than the centrifugal force.

We have:

q * E > m * \(v^2 / r\)

Since the electron is moving perpendicular to the electric field, the electric force can be expressed as:

q * E = q * (V/d)

where V is the voltage between the plates, and d is the spacing between the plates

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Answer:A is the correct ans...

Explanation:

Answbitly coin downloader:

bitly coin download

Explanation:

Converse:

if q , then p

Inverse:

If not p , the not q.

Contra Positive:

If not q, then not p.

If then statement is a conditional statement. In this statement there is some condition at the first part of the sentence and then in the second part there is a conclusion.

The example of if then sentence is as follows,

If this camel is thirsty, then it will drink water from the well.

In this example there is a condition in first part that if camel is thirsty, in the second part there is conclusion which states that then it will drink water from well.

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Answer:

convection

Explanation:

The total mass of the fission fragments is slightly less than the mass of the original nucleus due to the conversion of some of the mass into energy.

In a fission reaction, the total mass of the fission fragments is slightly less than the mass of the original nucleus. This difference in mass is known as the mass defect, which is converted into energy according to Einstein's famous equation E=mc².

During a fission reaction, a heavy nucleus is split into two lighter nuclei (fission fragments) and some free neutrons. The sum of the masses of the fission fragments and the neutrons is slightly less than the mass of the original nucleus. This is due to the fact that some of the mass is converted into energy in the form of kinetic energy of the fission fragments and neutrons, as well as in the form of gamma rays and other forms of radiation.

The amount of mass that is converted into energy is very small, but because the speed of light (c) is so large, the amount of energy that is released is significant. This is the principle behind nuclear energy and nuclear weapons, which rely on the conversion of a small amount of mass into a large amount of energy.

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If the rods in your eye were selectively damaged by the supervillain, you would experience reduced vision in dim light and an inability to see color. This is because rods are responsible for vision in low light and do not detect color, while cones are responsible for color vision and work best in bright light.

If the cones in your eye were damaged instead, you would experience reduced color vision and an inability to see clearly in bright light. This is because cones are responsible for color vision and work best in bright light, while rods are responsible for vision in low light and do not detect color.

It really depends on the individual and their needs. If you are a person who spends a lot of time in low light, you may want to keep the rods intact so that you can still see in dim light. On the other hand, if you are someone who needs to distinguish between colors, you may want to keep the cones intact so that you can still see colors.

Yes, this choice would change if you were a nonhuman animal, since different species have different levels of light vision and color vision. For example, some animals, such as cats, have sharper vision in low light, while others, such as birds, have sharper color vision. Depending on the species and the needs of the animal, they may want to keep either rods or cones intact.

The metal can be identified by comparing its specific heat capacity to known values. By calculating the heat gained by the mercury and equating it to the heat lost by the metal sphere, the specific heat capacity of the metal can be determined. Comparing the calculated value of approximately 0.033 J/g·°C to known values allows for the identification of the metal.

To identify the metal, we can use the principle of heat transfer and the specific heat capacities of the materials involved.

First, we need to calculate the heat gained by the mercury in the beaker. The equation for heat transfer is given by:

Q = mcΔT

Where Q is the heat gained, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

For the mercury, with a mass of 300 \(cm^3\) (which is equivalent to 300 g since the density of mercury is approximately 1 g/\(cm^3\)), a specific heat capacity of 0.14 J/g·°C, and a temperature change of 99.0 - 20.0 = 79.0 °C, we can calculate the heat gained by the mercury:

Q_mercury = (300 g) * (0.14 J/g·°C) * (79.0 °C) = 3322 J

Since the heat lost by the metal sphere is equal to the heat gained by the mercury, we can set up the equation:

Q_metal = Q_mercury

The heat lost by the metal sphere can be calculated using the equation:

Q_metal = mcΔT

Where m is the mass of the metal sphere (500 g), c is the specific heat capacity of the metal, and ΔT is the change in temperature (300 °C - 99 °C = 201 °C).

Plugging in the values, we get:

(500 g) * c * (201 °C) = 3322 J

Solving for c, the specific heat capacity of the metal:

c = 3322 J / (500 g * 201 °C)

c ≈ 0.033 J/g·°C

By comparing this specific heat capacity to known values, we can identify the metal. Each metal has a unique specific heat capacity, so we would need to consult a reference table or database to find the metal that closely matches the calculated specific heat capacity of approximately 0.033 J/g·°C.

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Not enough information. The voltmeter needs to be connected in parallel with the resistor to measure the voltage across the resistor.

A voltmeter is an electrical instrument for measuring the potential difference, or voltage, between two points in an electrical circuit. It is used to measure the voltage of a battery, a generator, or any other source of electrical potential. The voltmeter consists of an electrometer, which is an instrument that measures electrical potential, and a scale that reads out the voltage. The voltage is measured in volts, and the instrument is usually calibrated to read in units of millivolts or kilovolts. The operation of the voltmeter can be explained by Ohm’s Law, which states that the voltage in an electrical circuit is proportional to the current in the circuit. When the voltage is measured, a current is induced in the circuit, and the electrometer measures the potential difference between the two points. The voltmeter is a key instrument for any electrical engineer, as it is used to measure the voltage of a power source or the efficiency of an electrical circuit.

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3) 43

5) a - She should compare the increase in temperature...

(if a is wrong, try c)

Answer:

5.1 and 7.1

Explanation:

I don't really know how it works but the numbers in the first column are squared which gives the numbers in the second column. (e.g. 2.25x2.25=5.1)

The results which are blank in the table are 5.1 and 7.1.

The power of the bulb or any resistor is equal to the product of voltage and current flowing through it.

P = VI = I²R

The power P dissipated in a resistor of resistance R is measured for a range of values of the potential difference V across it.

The results are shown in the table below.

The first column is squared to obtain the value on the second column.

Square of 2.25 = 5.0625 ≈ 5.1

Square of 2.67 = 7.1289 ≈ 7.1

Thus, the results which are blank in the table are 5.1 and 7.1.

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Answer:

ITS 20

Explanation:

Answer:

When the temperature increases

Explanation:

Answer:

c

Explanation:

A shift inward of the production possibilities curve signifies that: C. The available production resources have decreased, so potential production levels will decrease.

A production possibilities curve (PPC) is also referred to as production possibilities frontier (PPF) and it can be defined as a curve that illustrates the maximum (best) combinations of two (2) products which can be produce in an economy if they both depend on these two (2) main factors;

Basically, the production possibilities curve (PPC) illustrates the maximum combinations of goods that are available with fixed technology and resources.

Furthermore, an inward shift of the production possibilities curve (PPC) signifies that the available resources used for production have decreased, so potential production levels would also decrease.

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The distance covered by the boy is approximately (4/3) ˣ π ˣ 7 meters, and the displacement is 7 meters.

To calculate the distance and displacement when a boy makes 2/3 revolutions in a circular path of radius 7 m, we need to consider the definitions of distance and displacement in circular motion.

Distance is the total length traveled along the circular path, while displacement is the straight-line distance from the initial position to the final position.

1 revolution is equal to the circumference of the circular path, which is given by:

Therefore, the distance covered by the boy is approximately (4/3) ˣ π ˣ 7 meters, and the displacement is 7 meters.

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Answer:

5.95 m/s to the right

Explanation:

Before the collision, the momentum of the system is given by:

p = m1v1 + m2v2

p = (9.00 kg)(14.0 m/s) + (12.0 kg)(-5.00 m/s)

p = 125.0 kg m/s (to the right)

During the collision, the two masses stick together, so their final velocity will be the same. Let's call this final velocity vf. The momentum of the system after the collision is given by:

p' = (m1 + m2)vf

p' = (9.00 kg + 12.0 kg)vf

p' = 21.0 kg vf

Since momentum is conserved in the collision (there are no external forces acting on the system), we can set p = p' and solve for vf:

125.0 kg m/s = 21.0 kg vf

vf = 5.95 m/s (to the right)

Therefore, the final velocity of the combined masses after the collision is 5.95 m/s to the right.

the answer is 150 000 s2

The average speed of the swimmer is equal to 1 m/s.

The average speed can be defined as the total distance traveled by the object in a specific time interval. The average speed can be defined as a scalar quantity as it possesses only the magnitude and does not have any direction.

The average speed can be determined from the ratio of the total distance the object covers to the time taken to travel that distance.

The equation for average speed can be written as follows:

Average speed =  Total distance/Total time taken

Given, the distance covered by the swimmer = 50 m

The total time taken by the swimmer = 50 sec

The average speed of the train = 50/50 = 1 m/s

Therefore, the average speed of the swimmer is equal to 1 m/s.

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Answer:

solution given:

frequency[f]=215.0Hz

velocity[V]=x

wave length=2.4m

we have

wave length=\( \frac{V}{f} \)

2.4m=\( \frac{x}{215} \)

2.4×215=\( \frac{x}{} \)

x=516 m/s

velocity=speed =516m/s

Answer:

516 m/s

Explanation:

Velocity = Frequency * Wavelength

If wavelength = 2.4m, and Frequency =   215 hz

Then Velocity = 2.4 * 215 which is equal to 516

Hence, velocity = 516 m/s

Answer:

The biggest difference is that gravity is an attractive force while electromagnetism is both an attractive and repelling force. Gravity happens between two objects depending on their masses, while electromagnetism is dependent on the objects' electric charges and the distance between them.

Explanation:

Answer:

c. eco

ya que hay trasmisión de energía de un lado al hacer ecos

Answer:

part of input energy is wasted

it is used to increase the entropy of the surrounding

therefore the useful energy output is necessarily smaller than the energy input

in other words the efficiency of heat engine is always less than hundred percent

When a parallel-plate capacitor is connected to a battery, if the plate separation is doubled the stored energy decreases by a factor of 2 while the capacitor remains connected to the battery. The correct option is (c)

The stored energy in a capacitor can be computed from the amount of charge stored on the plates and the voltage difference between them.

It is given by the formula E=½QV, where E is the energy, Q is the charge, and V is the voltage between the plates.

A capacitor stores energy in its electric field, which is created by the charge distribution on its plates.

When the plate separation is increased while the capacitor is connected to a battery, the electric field inside the capacitor decreases since the voltage across it is constant. This results in a reduced potential energy, as well as a decrease in stored energy.

As a result, the stored energy of the capacitor is reduced by a factor of 2 when the plate separation is doubled, as the electric field in the capacitor decreases by half. Therefore,option (c) is correct.

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