Which of the following would have the most momentum?
A.
A light ball moving slowly

B.
A heavy ball moving slowly

C.
A light ball moving quickly

D.
A heavy ball moving quickly

Answer:

Accessory

Explanation:

When electricity moves through a metal wire, the wire is option B. A conductor.

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Answer:

The "distance" is the answer to the question,

Explanation:

Answer:

it would be c

Explanation:

its the only one that makes sence

The kinetic energy of the system after the collision if the collision is elastic 2.25 joules.

This refers to a collision in which there is no net loss  in the system due to the collision.

An elastic collision is a collision where both the Kinetic Energy, KE, and momentum, p are conserved. that is KE0 = KEf and po = pf.

For mular for calculating Final kinetic energy KE :

Final kinetic energy KE = 1/2 m₁v₁² + 1/2 m₂v₂² = joules

where,

m₁ = The first object's mass

m₂ =The second object's mass

v₁²= The first object's velocity

v₂ = The second object's velocity

Given in the question:

m₁ = 2. 00 kilograms

m₂ =5. 00 kilograms

v₁²= 1. 50 meters/second

v₂ = 0 (this is becaues the object is stationary, not moving)

calculating Final kinetic energy KE :

KE = 1/2 *2. 00 *(1. 50 )² + 1/2  *5. 00* (0)²

  = 1/2 *2. 00 *2.25

    KE =2.25 joules

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The statement that photons of ultraviolet radiation contain more energy than do photons of violet visible light is true.

Due to its shorter wavelengths than blue or violet light, ultraviolet radiation oscillates more quickly and has a higher energy content per photon than visible light.

Compared to visible light, UV light contains more energetic photons, but the quantity is governed by intensity, which is the number of photons released in a certain amount of time, such as from a lamp.

This is also known as the luminous flux or light flux.

The color of visible light depends on the energy of the photons that produce it. Higher energy (shorter wavelength) light is at the violet end of the visible light spectrum, whereas lower energy (longer wavelength) light is at the red end.

UV light has a shorter wavelength than violet visible light due to its increased intensity.

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Answer: 268.80 W/m^2

Explanation:

Intensity = Power/Area

first convert radius to meters

1.5mm= 1.5x10^-3m

area= pi (1.5x10^-3)^2

= 7.069m^2

convert power to W

1.9mW= 1.9x10^-3W

plug into intensity formula

(1.9x10^-3)/(7.069) = 268.80 W/m^2

To determine the electric field at the x = 2 cm mark, given two charges positioned along the x-axis, q1 = 25 nC and q2 = 37 nC, we can apply the principles of Coulomb's law and superposition. By calculating the electric field contribution from each charge at the specific position and summing them, we can find the total electric field.

Coulomb's law states that the electric field created by a point charge is directly proportional to the charge and inversely proportional to the square of the distance. For each charge, we can calculate the electric field contribution at the x = 2 cm mark and then sum them to find the total electric field. The electric field (E) created by q1 at the x = 2 cm mark can be calculated as E1 = (k * q1) / r1^2, where k is the electrostatic constant and r1 is the distance from q1 to the x = 2 cm mark.

Similarly, the electric field (E) created by q2 at the x = 2 cm mark can be calculated as E2 = (k * q2) / r2^2, where r2 is the distance from q2 to the x = 2 cm mark.

Once we have calculated E1 and E2, we can sum them to find the total electric field at the x = 2 cm mark: E_total = E1 + E2. By plugging in the values of q1, q2, and the distances r1 and r2, we can calculate the electric field at the given position.

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Answer:

yes nucleus is found in plant and animal cells.

Hope this helps :)

Answer:

The speed of the apple will be 2.81 m/s when the arrow enters it.

Explanation:                

We can find the speed of the apple by conservation of linear momentum:

\( p_{i} = p_{f} \)

\( m_{ap}v_{ap_{i}} + m_{a}v_{a_{i}} = m_{ap}v_{ap_{f}} + m_{a}v_{a_{f}} \)

Where:

\(m_{ap}\) is the mass of the apple = 100 g = 0.1 kg

\(m_{a}\) is the mass of the arrow = 2.5 g = 0.0025 kg

\(v_{ap_{i}}\) and \(v_{ap_{f}}\) is the initial and final speed of the  apple respectively

\(v_{a_{i}}\) and \(v_{a_{f}}\) is the initial and final speed of the  arrow respectively

Since the apple was originally at rest (\(v_{ap_{i}}\) = 0) and knowing that \(v_{a_{f}}\) = \(v_{ap_{f}}\) when the arrow enters into the apple, we have:

\( 0 + 0.0025 kg*115 m/s = v(0.0025 kg + 0.1 kg) \)  

\(v = 2.81 m/s\)  

Therefore, the speed of the apple will be 2.81 m/s when the arrow enters it.

I hope it helps you!  

Answer:

c. 15.4 s

Explanation:

Given the following data;

Mass, m = 50kg

Force, F = 130N

Initial velocity, u = 20m/s

Final velocity, v = 60m/s

To find the time;

First of all, we would solve for acceleration using the formula below;

Force = mass * acceleration

130 = 50*acceleration

Acceleration = 130/50

Acceleration = 2.6m/s²

Now, we would use the first equation of motion to find the time.

V = U + at

60 = 20 + 2.6t

2.6t = 60 - 20

2.6t = 40

t = 40/2.6

Time, t = 15.39 ≈ 15.4 seconds.

The time taken will be 15.4 seconds approximately. The correct answer is option c

NEWTON SECOND LAW

Newton's second law state that, the rate of change of momentum is proportional to the force applied.

Given that  a force of 130 N be applied to an object of mass 50 kg to change its speed from 20 m/s to 60 m/s. The given parameters are;

from Newton's second law,

Ft = m(v - u)

Substitute all the parameters into the formula

130t = 50 (60 - 20)

130t = 50 x 40

130t = 2000

t = 2000/130

t = 15.38 seconds

Therefore, the time taken will be 15.4 seconds approximately. The correct answer is option c

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Answer:

Meat, cereals, milk, fish, fruits and nuts

Answer:

Green leafy vegetables too

Explanation:

hope it helps

Answer:

It’s fun

Explanation:

If a person sitting on the outer edge of a merry-go-round travels at a greater speed than a person sitting near the center because the linear velocity is a product of the angular velocity and the perpendicular distance from the center .

It is defined as motion when the object is moving in a circle with a constant speed and its velocity is changing with every moment because of the change of direction but the speed of the object is constant in a uniform circular motion .

Because the linear velocity is a function of the angular velocity and the perpendicular distance from the center .

Thus, the person seated on the outside edge of a merry-go-round will move more quickly than a person seated near the center .

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The phenomenon of interference arises when waves from two or more sources come together at a point. When waves meet at a point, they superimpose each other.

When crest of one wave coincides with the crest of another wave, they add up constructively, leading to constructive interference. On the other hand, when the crest of one wave coincides with the trough of another wave, they cancel each other out leading to destructive interference.In Young's double-slit experiment, light is shone on two slits. Due to the diffraction of light, each slit acts as a source of waves.

These waves overlap, producing a pattern of bright and dark fringes on a screen placed behind the slits. This pattern is known as interference pattern. The intensity of light on the screen depends on the difference in path length of the waves from the two slits and their phase difference.The width of the slits affects the interference pattern. If the width of the slits is increased, the distance between the slits also increases. This results in an increase in the distance between the fringes. Hence, the fringes become narrower and the intensity of light at each fringe decreases. This is because the waves interfere with each other in a narrower region of space, causing the intensity of light to decrease. On the other hand, if the width of the slits is decreased, the distance between the fringes decreases. Hence, the fringes become wider and the intensity of light at each fringe increases.

The width of the slits affects the interference pattern. If the width of the slits is increased, the distance between the slits also increases. This results in an increase in the distance between the fringes. Hence, the fringes become narrower and the intensity of light at each fringe decreases.

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Answer:

Hypothesis.

Explanation:

Not a question, not a summary, and not an experiment.

Answer:

Flash flooding or ongoing heavy rain can be precursors to landslides, mud/debris flows, and even rockfalls. ... Rockfalls are often caused by erosion of earth around larger rocks that then become loose and fall. Earthquakes can also lead to landslides and rockfalls.

Explanation:

It is a geological process called erosion.

A ball is thrown vertically into the air. Because of air resistance it's speed when it returns to Its starting starting level compared with its initial speed is lower.

Air resistance, also known as drag, is a force that opposes the motion of an object through the air. As the ball travels upwards, air resistance slows it down, reducing its speed. As the ball falls back to its starting level, air resistance continues to oppose its motion, further reducing its speed.

Therefore, the speed of the ball when it returns to its starting level will be lower than its initial speed due to the effects of air resistance.

In mathematical terms, the speed of the ball at any given time can be calculated using the equation v = v0 - gt, where v0 is the initial speed, g is the acceleration due to gravity, and t is the time elapsed. Air resistance adds an additional force that opposes the motion of the ball, reducing its speed even further.

So, the correct answer is that the ball's speed when it returns to its starting level compared with its initial speed is lower because of air resistance.

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The brakes do

W = ∆K = 0 - 1/2 (1800 kg) (40 m/s)² = -1.44 MJ (megaJoules)

of work on the car to stop it. They apply a negative force since the braking opposes the car's forward displacement, so the car stops over a distance x such that

W = (-24.6 kN) x   ==>   x ≈ 58.5 m

5 seconds

A wave is a disturbance in a medium that carries energy without a net movement of particles, the frequency is the number of waves that pass a fixed point in unit time

it is written as:

and the wave period is the time it takes to complete one cycle ,it is inversely proportional to the frequency of a wave, we can find the period using the formula

Step 1

given:

now, replace in the formula

therefore, the Period is 5 seconds

I hope this helps you

Your answer is in the attachment . Hope this helps.

Answer:

Here you go :-

hope this helps!

Answer:

0.2

Explanation:

The given parameters are;

The acceleration of the train, a = 0.2·g

The mass of the person standing on the train = m

Let μ represent the coefficient of static friction, we have;

The force acting on the person, F = m × a = m × 0.2·g

The force of friction acting between the feet and the floor, \(F_f\) = m·g·μ

For the person not to slide we have;

The force acting on the person = The force of friction acting between the feet and the floor

F = \(F_f\)

∴ m × 0.2·g = m·g·μ

From which we get;

0.2 = μ

The coefficient of static friction that must exist between the feet and the floor if the person is not to slide, μ = 0.2.

Answer:

8.06 m/s

Explanation:

It is given that,

Mass of a swimmer, m = 72 kg

He jumps from a diving board 3.25 m above the water.

We need to find the speed just as he hits the water if he jumps straight up. Using the conservation of energy to fin it as follows :

\(mgh=\dfrac{1}{2}mv^2\\\\v=\sqrt{2gh} \\\\v=\sqrt{2\times 10\times 3.25}\\\\ v=8.06\ m/s\)

So, the required speed is 8.06 m/s.

Answer:

Explanation:

5 C = 278 K

25 C = 298 K

V1 / T1 = V2 / T2

1.5L / 278 K = V2 / 298 K

V2 = (1.5L * 298) / 278

V2 = 1.61 L

a sealed vessel contains 50% oxygen, 10% carbon dioxide, and 40% nitrogen gas. the total pressure of the mixture is 5 atmospheres. The partial pressure of carbon dioxide in the sealed vessel is 0.5 atmospheres.

To determine the partial pressure of carbon dioxide in a sealed vessel containing 50% oxygen, 10% carbon dioxide, and 40% nitrogen gas with a total pressure of 5 atmospheres, follow these steps:

1. Find the percentage of carbon dioxide in the mixture: 10%
2. Multiply the total pressure by the percentage of carbon dioxide to find the partial pressure.

Partial pressure of CO2 = Total pressure × Percentage of CO2
The partial pressure of CO2 = 5 atmospheres × 0.1 (10% as a decimal)

Your answer: The partial pressure of carbon dioxide in the sealed vessel is 0.5 atmospheres.

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Answer:

Refractive index of a glass is 1.5 means that the speed of light travels 1.5 times SLOWER in that glass than in a vacuum.

Explanation:

Refractive index is defined as a ratio between the speed of light in a vacuum and the speed of light in a medium. Since the refractive index is a ratio between two speeds it is a dimensionless number. For the glass, having a refractive index of 1.5, means that the speed of light travels 1.5 times SLOWER in that glass than in a vacuum.

Explanation:

Hope this helps,

Juno entered a polar orbit of Jupiter on July 5th 2016 UTC, to begin a scientific investigation of the planet. After completing its mission, Juno will be intentionally deorbited into Jupiters atmosphere. Junos mission is to measure Jupiters composition, gravitational field, magnetic field, and polar magnetosphere.

Answer:

1

3

4

5

or

a

c

d

e

Explanation:

A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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Answer:

Explanation:

While pure science deals with knowledge discovery Applied science deals with knowledge use

Answer:false

Explanation: