Most fossil fuel deposits were formed from organisms that lived during the Cretaceous Period of the Earth's geologic history.
Group of answer choices
True
False
24)
Canada and Venezuela mine oil/tar sands. What are oil/tar sands?
Group of answer choices
Oil/tar sands are the impurities that are removed from crude petroleum during the refining process.
Oil/tar sands are the hydraulic fracturing fluids that are used to extract natural gas from shale rock formations.
None of these answers are correct.

Answer:

Height = 0.25 metres

Speed = 3.26 m/s

Explanation:

Kinetic energy = 17 joules

Mechanical energy = 25

Potential energy = 25-27 = 8

Potential energy PE = m*g*h

8 = 3.2x9.81xh

8 = 31.392h

We divide through by the value of h to get height

8/31.392 = h

h = 0.25 metres

We solve for speed = velocity

Kinetic Energy = 1/2mv²

17 = 0.5x3.2xV²

17 = 1.6v²

V² = 17/1.6

V² = 10.625

V = √10.625

Velocity = 3.26m/s

The overestimated distance traveled between t=0 and t=5 is 158 meters.

To estimate the distance traveled, we can use the trapezoidal rule to approximate the area under the curve of the velocity function v(t). The trapezoidal rule divides the interval [0, 5] into subintervals with a width of 1 second and approximates each subinterval as a trapezoid. The formula for the trapezoidal rule is ∫[a,b] f(x) dx ≈ ∑[(i=1 to n)] [f(x_i-1) + f(x_i)] * Δx / 2, where Δx is the width of each subinterval.

Using this formula, we can calculate the overestimated distance traveled:

s ≈ [f(0) + 2f(1) + 2f(2) + 2f(3) + 2f(4) + f(5)] * Δt / 2

≈ [0 + 2(1^2 + 6) + 2(2^2 + 6) + 2(3^2 + 6) + 2(4^2 + 6) + (5^2 + 6)] * 1 / 2

≈ 158 meters.

This provides an overestimate of the distance traveled between t=0 and t=5.

For more questions like Velocity click the link below:

https://brainly.com/question/30559316

#SPJ11

Answer:potential difference is more or less like voltage. Using ohms, V=IR

Where V is Voltage

I is Current =0.4A

R is Resistance=20ohms

V=0.4*20

V=8V

Hence the potential difference will be 8V.

ii) V=0.4*30

V=12V

Explanation:

The voltage of potential difference is directly proportional to the current and the resistance. So if one increase or decrease, it will have impact on the other.

From the calculations, when the resistance increase, the voltage will increase to appreciate the change.

Answer:

C

Explanation:

A thermal cycler is used in the process of PCR to amplify DNA samples, which can then be used to identify disease pathogens through genetic testing.

PCR, or polymerase chain reaction, is a laboratory technique used to amplify and copy DNA samples. It involves the use of a thermal cycler, which rapidly cycles through different temperatures to facilitate the various steps of the PCR process. The thermal cycler heats and cools the reaction mixture containing the DNA sample and other reagents, causing the DNA to denature, anneal, and elongate in a repeating cycle. Once the DNA has been amplified, it can be used in genetic testing to identify the presence of specific disease pathogens, such as viruses or bacteria, by comparing the amplified DNA sequence to known pathogen sequences.

To know more about pathogen, here

brainly.com/question/25411165

#SPJ4

Answer:

y = 0m

y0 = 166m

v0y = 0 m/s

g = 9.8 m/s^2

t = ?

Solve for t:

y = y0 + v0y*t - (0.5)gt^2

0 = 166 - (0.5)(9.8)t^2

t = 5.82 s

Now, using time, we can solve for the range using the equation:

x = vx(t)

x = (40)(5.82)

x = 232.8 m

The impact horizontal component of velocity will be 40 m/s as velocity in terms of x is always constant. To find the impact vertical component of velocity, we use the equation:

v = v0y - gt

v = 0 - (9.8)(5.82)

v = -57.04 m/s

i still. don't get the answer is help me pls

Explanation:

a variable In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation.

a unit In math, the word unit can be defined as the rightmost position in a number or the one's place

EAC( Low-energy lightbulb )=18.47 EAC( Conventional lightbulb )=7.33 Conventional lightbulb is cheaper to operate. Option D

To calculate the Equivalent Annual Costs (EAC), we need to consider the initial cost, maintenance costs, and the present value of future costs, taking into account the discount rate.

The EAC (Equivalent Annual Cost) is calculated by summing up the annual costs of the lightbulb over its lifetime, discounted at the real discount rate of 4%.

For the low-energy lightbulb:

EAC = Cost of bulb + Present value of annual electricity cost

= $3.60 + ($2.00 / (1 + 0.04)^1) + ($2.00 / (1 + 0.04)^2) + ... + ($2.00 / (1 + 0.04)^9)

≈ $18.47

For the conventional lightbulb:

EAC = Cost of bulb + Present value of annual electricity cost

= $0.60 + ($7.00 / (1 + 0.04)^1) + ($7.00 / (1 + 0.04)^2) + ... + ($7.00 / (1 + 0.04)^1)

≈ $7.33

Since the EAC for the low-energy lightbulb is $18.47 per year and the EAC for the conventional lightbulb is $7.33 per year, the conventional lightbulb is cheaper to operate assuming a burnt-out bulb is replaced by an identical bulb.

More on energy cost can be found here: https://brainly.com/question/32407557

#SPJ4

Newton's second law allows us to find that the correct answer is:

   A) The mass of the baseball never changes so the more force in the pitchers arm, the higher the acceleration of the baseball before it leaves the pitcher's hand.

Newton's second law gives a relationship between force and the product of mass and acceleration of the body

          F = m a

Where F is the force, m the mass and the acceleration of the body.  The bold indicate vectors

The baseball ball is a solid body that has a fixed mass, therefore the pitcher uses different forces in the arm, the acceleration must change proportionally, as the force increases, the acceleration must increase (fastball).

Let's review the different claims

A) true. These statements are in accordance with Newton's second law

B) False. If the force changes any of the other two parameters must change

C) false. Force and acceleration are proportional

D) False. When the ball is in the air it is subjected to the acceleration of gravity

With Newton's second law we find that the correct answer is:

   A) The mass of the baseball never changes so the more force in the pitchers arm, the higher the acceleration of the baseball before it leaves the pitcher's hand.

Learn more about Newton's second law here

https://brainly.com/question/19860811

To move a distance of 44 m Work is done 1456.4 Joule.

A force must be applied and there must be movement in the force's direction for a work to be done scientifically. Having said that, we may state that: Work is the product of the displacement's magnitude and the component of force acting in that direction.

Mass of the object: m = 75 kg.

Force applied on it: F = 55 N.

Angle of applied force: α = 53°

Displacement: d = 44 m

Hence, work done: W = Fd cosα = 55 N × 44 m × cos53° Joule = 1456.4 J.

Learn more about work here:

https://brainly.com/question/19382352

#SPJ1

yes the answer is force

Explanation:

Force is a push or pull which can change the state of body whether it is rest or in motion or tries to change the state of body.

The given position equation of a particle is, s=102−23t+t2Here, t is in seconds.The first derivative of s is its velocity: v = ds/dt - 23 + 2tThe second derivative of s is the particle's acceleration:

The total distance traveled is the sum of all distance travelled in each interval of time: D = ∫|v|dt + ∫|v|dt + ... (From t 0 s to t = 17 s)From the graph of the velocity, the particle is moving to the left and toward the right side. The velocity-time graph is linear, which means that the acceleration is constant and uniform. Hence, the conclusion we can draw is that the particle is moving with uniform acceleration.  a = dv/dt = 2The given equations are: s=102−23t+t2v

=−23+2ta

=2Plot of s-t and v-t graphs:

Net displacement (Δs) during the interval of 17 seconds can be calculated as:Δs = s(17) - s(0)Δs 

= 102 - (2 × 3² / 2) - (23 × 3) + (17² / 2) - 102Δs 

= -4 mmThe particle moves to the left side.

To know more about position visit:

https://brainly.com/question/14847210

#SPJ11

1.5 gram per cubic centimeter

Children can obtain a particular score on an intelligence test called IQ.

An IQ test is a cognitive ability evaluation that delivers a score that is meant to act as a measure of an individual's intellectual aptitude and potential. IQ tests are among the most commonly used psychological assessments.

IQ stands for intelligence quotient and is defined as "a form of standard score that reflects how far above, or far below, his/her peer group an individual stands in mental capacity" by Mensa International, an association for those with IQs in the top 2%.

IQ is a general test for all the age group.

To know more about IQ test visit: https://brainly.com/question/28875770

#SPJ4

Science does not  work when every one does the same thing, some creative thinking will be major breakthroughs for an invention. Therefore, option B is correct.

So how do researchers come up with those particular questions to look into ! It may come as a shock to learn how much imagination is required for the procedure.

Peter Medawar, a Nobel Prize-winning biologist, once described scientific inquiry as "the art of the soluble"  In order to succeed in science, one must first identify the questions that may be answered by scientific study and then determine the answers to those questions, according to Medawar.

Because of how intricate the natural world is, it is frequently impossible to directly address the really intriguing, significant scientific topics

The art of science includes repeatedly re-imagining these complex issues, mentally dividing them into more manageable components, and then guessing as to which of these more manageable components might hold the answer to solving the larger issue.

Therefore, all the discoveries and inventions are resulted from the creative ideas and thoughts of scientists. Therefore, creativity is the only way to make a controlled experiment.

Find more on scientific questions:

https://brainly.com/question/17752552

#SPJ7

Answer:

Based on the symptoms described, Mike is most likely experiencing heat cramps. Heat cramps are painful, involuntary muscle spasms that usually occur during heavy exercise in hot environments. The sweating that occurs causes the body to lose salts and minerals, which can result in cramping. The symptoms include muscle pain or spasms usually in the abdomen, arms, or legs, which matches the symptoms Mike is experiencing.

Temperature is the degree of hotness or coldness of an object or substance. The SI unit of temperature is Kelvin."97%": The question suggests that a reaction must be run at a specific temperature to achieve 97% yield or completion. Yield refers to the amount of product obtained from a reaction.

To achieve 97% yield or completion, the reaction must be run at a specific temperature. Temperature plays an essential role in chemical reactions since it affects the rate of reaction, activation energy, and equilibrium. The temperature at which a reaction runs optimally, producing the most product, is known as the reaction's optimum temperature. As a result, the temperature must be controlled during a chemical reaction.To achieve 97%, the reaction must be run at a specific temperature.

Learn more about  activation energy here ;

https://brainly.com/question/28384644

#SPJ11

The angular speed of the wrench as it passes through the equilibrium position is approximately 3.17 radians per second.

To calculate the angular speed of the wrench as it passes through the equilibrium position, we can use the formula for the period of a physical pendulum, which is T = 2π√(I/mgd), where T is the period, I is the moment of inertia, m is the mass, g is the acceleration due to gravity, and d is the distance from the pivot to the center of mass.

Given:

Mass of the wrench (m): 1.80 kg

Period of small-angle oscillations (T): 0.940 s

Displacement from equilibrium (θ): 0.400 rad

First, we need to find the moment of inertia (I) of the wrench. The correct answer provided is 0.099 kg·m^2.

Now, we can use the formula T = 2π√(I/mgd) to solve for the angular speed (ω).

Rearranging the formula:

T = 2π√(I/mgd)

√(I/mgd) = T / (2π)

I/mgd = (T / (2π))^2

ω = √(gd/I)

Substituting the given values:

g = 9.8 m/s^2 (acceleration due to gravity)

d = 0.250 m (distance from pivot to center of mass)

I = 0.099 kg·m^2 (moment of inertia)

ω = √(9.8 * 0.250 / 0.099) ≈ 3.17 rad/s

Therefore, the angular speed of the wrench as it passes through the equilibrium position is approximately 3.17 radians per second.

To learn more about angular speed click here

https://brainly.com/question/29058152

#SPJ11

chatgpt

a) To determine the electric field strength (E) inside the solenoid at a point on the axis, we can use Faraday's law of electromagnetic induction, which states that the rate of change of magnetic field (dB/dt) induces an electric field. The formula to calculate the electric field strength is:

E = -dB/dt

Given that the magnetic field (B) is decreasing at a rate of 4.20 T/s, we can substitute this value into the formula:

E = -(4.20 T/s)

Therefore, the electric field strength inside the solenoid at a point on the axis is -4.20 T/s.

b) To find the electric field strength (E) inside the solenoid at a point 1.60 cm from the axis, we can use Ampere's law, which relates the magnetic field and electric field strength inside a solenoid. The formula is:

B = μ₀nI

Where:

B is the magnetic field,

μ₀ is the permeability of free space (4π × 10^(-7) T m/A),

n is the number of turns per unit length,

I is the current passing through the solenoid.

To find the electric field, we need to determine the current passing through the solenoid. Given that the solenoid's diameter is 5.0 cm, we can calculate its radius (r):

r = diameter / 2 = 5.0 cm / 2 = 2.5 cm = 0.025 m

We know that the magnetic field (B) at the given point on the axis is 2.0 T. Therefore, using the formula for magnetic field inside a solenoid:

B = μ₀nI

We can rearrange the formula to solve for the current (I):

I = B / (μ₀n)

The number of turns per unit length (n) can be calculated from the given diameter (d) of the solenoid:

n = 1 / d = 1 / 0.05 m = 20 turns/m

Substituting the values into the current formula:

I = 2.0 T / (4π × 10^(-7) T m/A × 20 turns/m)

Simplifying the expression:

I ≈ 79577.47154 A

Now, we can calculate the electric field (E) at a point 1.60 cm from the axis using the formula:

E = B × r / (2πε₀r)

Where:

B is the magnetic field (2.0 T),

r is the distance from the axis (1.60 cm = 0.016 m),

ε₀ is the permittivity of free space (8.854 × 10^(-12) C²/N m²).

Substituting the values into the formula:

E = 2.0 T × 0.016 m / (2π × 8.854 × 10^(-12) C²/N m² × 0.016 m)

Simplifying the expression:

E ≈ 14.2857 × 10^10 N/C

Therefore, the electric field strength inside the solenoid at a point 1.60 cm from the axis is approximately 14.2857 × 10^10 N/C.

1. The magnetic field inside a tube-shaped object called a solenoid is getting smaller.

2. We want to find the electric field strength at different points inside the solenoid.

3. At a point on the center line of the solenoid, the electric field strength is found by multiplying the rate at which the magnetic field is decreasing by -1.

4. In this case, the magnetic field is decreasing at a rate of 4.20 Tesla per second, so the electric field strength is -4.20 Tesla per second.

5. At a point 1.60 cm away from the center of the solenoid, we need to use a different formula.

6. First, we calculate the current passing through the solenoid, which is a measure of how much electricity flows through it.

7. Then, using the current and other values, we find that the electric field strength at this point is approximately 14.2857 × 10^10 Newton per Coulomb (N/C).

Math part:

Formula for electric field strength inside a solenoid on the center line:

E = -dB/dt

Formula for electric field strength inside a solenoid away from the center line:

E = B × r / (2πε₀r)

1. We have an equation that helps us find the strength of an electric field at a certain point.

2. The equation is E = -dB/dt.

3. In this equation, E represents the electric field strength.

4. dB represents how much the magnetic field is changing.

5. dt represents the time it takes for the change to happen.

6. By using this equation, we can figure out the electric field strength by dividing the change in the magnetic field by the time it takes for the change to occur.

7. It is important to watch the signs in this equation because the negative sign (-) shows that the electric field and the change in the magnetic field have opposite directions.

1. We have an equation that helps us find the strength of an electric field at a certain point.

2. The equation is E = B × r / (2πε₀r).

3. In this equation, E represents the electric field strength.

4. B represents the magnetic field strength.

5. r represents the distance from the point to the source of the magnetic field.

6. The formula tells us that the electric field strength is found by multiplying the magnetic field strength by the distance from the point and then dividing it by a specific value (2πε₀r).

7. It's important to watch out for the r in both the numerator and denominator, as it cancels out when doing the calculation.

Math part:

Formula: E = B × r / (2πε₀r)

Think about a flashlight. When you turn it on, it creates a beam of light. The equation helps us calculate how bright the light is at a specific distance by considering the strength of the light (B), the distance from the flashlight (r), and dividing it by a specific value.

a) According to Faraday's law, a changing magnetic field induces an electric field.  The electric field strength inside the solenoid at a point 1.60 cm from the axis B = 6.37x10^-3 T.

Therefore, the electric field strength inside the solenoid at a point on the axis can be calculated as follows:
E = -dΦ/dt
where Φ is the magnetic flux through a cross-section of the solenoid. The flux can be found using the equation:
Φ = BA
where B is the magnetic field strength, and A is the cross-sectional area of the solenoid. Therefore, we have:
Φ = πr^2B
where r is the radius of the solenoid. Plugging in the given values, we get:
Φ = π(2.5x10^-2 m)^2 x 2.0 T = 1.57x10^-3 Wb
Differentiating Φ with respect to time, we get:
dΦ/dt = -πr^2dB/dt = -π(2.5x10^-2 m)^2 x 4.20 T/s = -5.24x10^-6 Wb/s
Substituting in the equation for E, we get:
E = -dΦ/dt = 5.24x10^-6 V/m

b) The electric field strength inside the solenoid at a point 1.60 cm from the axis can be calculated using Ampere's law, which states that the line integral of the magnetic field around a closed loop is equal to the current enclosed by the loop times the permeability of free space. For a solenoid, the magnetic field is uniform inside and zero outside. Therefore, we can use a circular loop of radius 1.60 cm centered on the axis of the solenoid. The current enclosed by the loop is given by:
I = nAL
where n is the number of turns per unit length of the solenoid, A is the area of the loop, and L is the length of the solenoid. We have:
n = N/L = 200/0.05 m = 4000 m^-1 (since there are 200 turns in the 5.0-cm-diameter solenoid)
A = πr^2 = π(1.60x10^-2 m)^2 = 8.04x10^-4 m^2
L = πdN = π(5.0x10^-2 m)x200 = 31.4 m
Therefore,
I = 4000 m^-1 x 8.04x10^-4 m^2 x 31.4 m = 10.0 A
Using the equation for Ampere's law, we get:
∮B•ds = μ0I
where the line integral is taken around the circular loop. Since the magnetic field is uniform inside the solenoid, we can simplify the line integral as:
B∮ds = B(2πr) = BA
Substituting in the given values, we get:
B(2πx1.60x10^-2 m) = 2.0 T x π(2.5x10^-2 m)^2
Solving for B, we get:
B = 6.37x10^-3 T
Finally, the electric field strength inside the solenoid at a point 1.60 cm from the axis is given by:
E = Bv
where v is the velocity of the charged particle experiencing the force due to the electric field. Since we are not given any information about the particle, we cannot calculate the electric field strength.

To know more about magnetic field   visit:-

https://brainly.com/question/14848188

#SPJ11

Answer:59.3

Explanation:

The force due to gravity or weight is 582 N. The mass of a student  is 59.39 Kg.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Force = mass.acceleration

582 = m*9.8

m = 59.39 Kg.

The force due to gravity or weight is 582 N. The mass of a student  is 59.39 Kg.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ2

Answer:

Hi... Potential energy is converted to kinetic energy and kinetic energy is converted to potential energy

The speed of the object after it has fallen 1.25 m is 1.99m/s.

Take a look at the illustration bellow.

From the case, we know some informations that:

I = 0.0352kg.m²

r = 12.5cm = 0.125m

m = 423g = 0.423kg

h = 1.25m

First, let's focus to the fixed reel.

Because the reel is moving in a circular motion after the object is released, we will use the tourqe or rotational force concept, where:

τ = Iα

τ = FR

α = the angular acceleration (a/r)

I = moment inertia

F = Force

R = the position vector

If we look at the fixed reel, we know that the rope tension is working as a force that is pulling the reel to the right. Hence, we could write some equation based on the tourqe formula:

τ = Iα

Tr = Iα

Tr = I(a/r)

T = Ia/r² ... (i)

Next, we will focus on the object m.

The object m will move downward after being released. It will fulfill the Second Law of Newton:

∑F = m.a

W - T = m.a ... (ii)

We already have the equation (i) for T, then we could subtitute this equation into equation (ii):

W - Ia/r² = m.a

m.g - Ia/r² = m.a

m.g = a (m+I/r²)

\(a=\frac{mg}{(m+\frac{I}{r^{2} }) }\)... (iii)

After finding the equation (iii), we could find the acceleration of the system:

a =            0.423 x 10            

    (0.423 + 0.0352/(0.125²))

a =     4.23  

      2.6758

a = 1.58 m/s² ...(iv)

Then we will use the linear velocity concept to find the speed of the object after falling.

s = 1/2(at²) + v0t

Because the object is originally static, hence:

h = 1/2 (at²) + 0

h = 1/2 (at²)

1.25 = 1/2 (1.58t²)

t = 1.26s ... (v)

a = v1 - v0

         t

1.58 =  v1 - 0  

             1.26

v1 = 1.99m/s ... (vi)

Learn more about Torque here: https://brainly.com/question/28220969

#SPJ4

The minimum initial velocity of the rock is V = 8.56 m/sec.

According to the rule of conservation of energy, energy can only be transformed from one form of energy to another and cannot be created or destroyed. This indicates that unless energy is added from the outside, a system always has the same quantity of energy.

Calculate the rock's minimal initial velocity in meters/second as it exits the slingshot at a distance of 6 feet \($\left(h_{2}=6\right.ft.)\) above the ground.

Using the provided information, the net height of the limb is calculated as shown below.

\($$h &=h_{1}-h_{2}$$\)

h = 18.3 - 6

h = 12.3

Now, using the conservation of energy the minimum initial velocity of the rock is computed as shown below,

Kinetic energy of the rock = Potential energy the rock

\($$\begin{aligned}\frac{1}{2} m V^{2} &=m g h \\\frac{1}{2} V^{2} &=g h \\\frac{1}{2} V^{2} &=\left(32.1 \mathrm{ft} / \mathrm{s}^{2}\right)(12.3 \text { feet }) \\V &=\sqrt{2\left(32.1 \mathrm{ft} / \mathrm{s}^{2}\right)(12.3 \mathrm{feet})}\end{aligned}$$\)

V = 28.10 \(\frac{ft}{s}\).

The minimal initial velocity in meter/second is 8.56.

Therefore, the minimum initial velocity of the rock is 8.56 m/sec

To know more about conservation of energy visit:
https://brainly.com/question/18924822

#SPJ4

Answer:

20

Explanation:

The average of the movement is 20+24+16/2 = 20cm

Answer:

.................................................................................................... .................

Explanation:

66yuvuvuvyftf5v7bictdtv7hivyftf5d5v7bibivydrd5gu ihibjbibibibibibibibibibibibibibibinonononononononompmpmpmpmpmpmpmpmpmpmpmpmpmpmpmpmpmpnininibibibuvuvuvuvycycyc6ctctcrxrxrzezea2ax4xtctcycyvyvyv7hibibinonobuvt

Answer:

It allows people in different places and different countries to use the same units, avoid mistakes and understand each other more easily. The common base 10 of all units makes it easier and has more accurate calculations that are made without cumbersome conversion factors.

Answer:

Explanation:

As we know that the SI units are extended versions of the MSK system. SI system helps us to calculate the appropriate measurement of any quantity. SI system is convenient(easy) to use and it is also followed all over the world which can help in international trade as well. So, SI system been developed.

Answer:

emissions line spectrum