A 5.00-kg sack of potatoes is raised to a height of 2.00 m and then thrown at a constant velocity of 2.00 m/s onto a truck. What is the kinetic energy of the potatoes?

Answer:

B

Explanation:

Answer:

B

Explanation:

I had a feeling

Answer:

Earth orbits the Sun

Explanation:

Answer:

Try lookin those questions up on Brainly

Explanation:

Answer:

The frequency of the sound wave is 800Hz

The speed of sound in a is about 340m/s.

Velocity = frequency x wavelength

making wavelength the subject formula

wavelength = Velocity/frequency.

wavelength = 340/800

wavelength = 0.425m.

The critical angle of the transparent material is 35.3 degrees.

The critical angle is the angle of incidence at which the angle of refraction is 90 degrees. In this case, the angle of refraction is 32 degrees. Therefore, the critical angle is calculated as follows:

sin(critical angle) = sin(90 degrees) / sin(angle of refraction)

sin(critical angle) = 1 / sin(32 degrees)

sin(critical angle) = 0.574

critical angle = arcsin(0.574)

critical angle = 35.3 degrees

Therefore, the critical angle of the transparent material is 35.3 degrees.

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The amplitude of the resulting oscillation is approximately 0.106 meters or 10.6 cm.

Before the collision:
- The first block

(mass m1 = 0.45 kg) is at its maximum extension

(amplitude A1 = 0.075 m) and has zero velocity.
-

The second block

(mass m2 = 0.45 kg) is moving at a velocity

v2 = 12 m/s and has no potential energy.

During the collision, the two blocks stick together

(mass m = m1 + m2 = 0.9 kg).

After the collision, the combined mass oscillates with a new amplitude A2.

Before collision:
- Mechanical energy of the system = Potential energy of the spring = (1/2)kA1^2
- Momentum of the system = m2 * v2

After collision:
- Mechanical energy of the system = Potential energy of the spring = (1/2)kA2^2
- Momentum of the system = m * v

Since mechanical energy and momentum are conserved:
- (1/2)kA1^2 = (1/2)kA2^2
- m2 * v2 = m * v

We know A1, m1, m2, and v2. We can solve the equations to find A2.

From the energy equation:

A2^2 = A1^2 * (m1 + m2) / m1 = (0.075^2) * (0.9 / 0.45) = 0.01125

A2 = sqrt(0.01125ou) ≈ 0.106 m

So, the amplitude of the resulting oscillation is approximately 0.106 meters or 10.6 cm.

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Answer:

85 cm

Explanation:

The speed of the blocks right after the collision is 6 m/s, so now we have an oscillator of mass 900.0 g with a speed of 6 m/s when x = 7.5 cm. The amplitude of this oscillator is 85 cm

The mass of gas that must be ejected in the first second to have an initial acceleration of 27.0 m/s2 is 136.13 kg.To solve this problem, we can use the concept of conservation of momentum.

The total momentum of the rocket and the ejected gas must be conserved, which means that:

(initial momentum of rocket + initial momentum of gas) = (final momentum of rocket + final momentum of gas)

We can assume that the initial momentum of the gas is zero (since it is initially at rest relative to the rocket), so the equation becomes:

(initial momentum of rocket) = (final momentum of rocket + final momentum of gas)

The initial momentum of the rocket is given by:

p_i = m_i * v_i

where m_i is the initial mass of the rocket and v_i is the initial velocity of the rocket (which is zero).

The final momentum of the rocket can be calculated using the equation:

p_f = m_f * v_f

where m_f is the final mass of the rocket (which is equal to the initial mass minus the mass of the ejected gas) and v_f is the final velocity of the rocket.

We can assume that the final velocity of the rocket is constant at 27.0 m/s, since we are asked to find the amount of gas that must be ejected in the first second. This means that the final momentum of the rocket is:

p_f = (m_i - m_g) * v_f

where m_g is the mass of gas ejected in the first second.

The final momentum of the gas can be calculated using the equation:

p_gas = m_g * v_gas

where v_gas is the relative velocity of the ejected gas with respect to the rocket.

Now we can substitute all these equations into the conservation of momentum equation and solve for m_g:

m_i * v_i = (m_i - m_g) * v_f + m_g * v_gas

Simplifying and solving for m_g:

m_g = (m_i * v_i - m_i * v_f) / (v_gas - v_f)

Substituting the given values:

m_i = 6400 kg

v_i = 0 m/s

v_f = 27.0 m/s

v_gas = 1900 m/s

a = 27.0 m/s^2

We can use the equation for constant acceleration:

a = F_net / m

where F_net is the net force acting on the rocket (which is equal to the force of the ejected gas) and m is the instantaneous mass of the rocket (which is equal to the initial mass minus the mass of the ejected gas at any given time).

Solving for the force of the ejected gas:

F_net = a * m

Substituting the expression for m:

F_net = a * (m_i - m_g)

Now we can substitute the expressions for F_net and m_g into the equation we derived earlier and solve for m_g:

m_g = (m_i * v_i - m_i * v_f) / (v_gas - v_f)

m_g = (m_i * v_i - m_i * v_f) / (v_gas - v_f - a * (m_i - m_g) / m_i)

Simplifying and solving for m_g:

m_g = m_i * (v_i - v_f) / (v_gas - v_f - a)

Substituting the given values:

m_g = 136.13 kg

Therefore, the mass of gas that must be ejected in the first second to have an initial acceleration of 27.0 m/s2 is 136.13 kg.

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Answer:

The volume of water in the graduated cylinder will be equal to the calculated volume of the sphere.

Explanation:

The volume of solid objects can be measured by completely immersing these solids in an overflow faucet filled to brim with a liquid in which the solid does not dissolve. This is known as the displacement method. When water is used, it is known as water displacement method.

In the Volume Lab Sheet, a sphere whose volume has been pre-calculated is immersed in the overflow faucet containing water. The displaced water is collected in a beaker and the volume is obtained using a 50 mL measuring cylinder.

The volume of a  sphere is calculated using the following formula:

Vsphere =  4πr³/ 3

The symbol π represents the number pi, which is about 3.14. The letter r stands for the  radius of the sphere, which is the distance from the center of a sphere to its surface. The  radius is exactly half of the diameter, which is the distance across the sphere through its center.

The volume of the water in the measuring cylinder is found to be equal to the calculated volume of the sphere. This is because an object immersed completely in a liquid displaces a volume of liquid equal to its own volume.

Answer:

25 cm³

Explanation:

In the conversion of units, we know that are one cubic centimeters (cm³) in a milliliter (mL) .

1 milliliter = 1 cubic centimeter

25 milliliters = 25 cubic centimeters

Therefore, a volume of 25 milliliters is the same as a volume of 25 cubic centimeters.

This ultimately implies that, the volume of an object in milliliters is equivalent to its volume in cubic centimeters.

Answer:

A pardon

Explanation:

Hope this helps

Answer:

that would probably be a A.Pardon

Answer:

v = 4 m/s

Explanation:

Given :

Ball X :

Mass, m1 = 8kg ;

Initial Velocity, u1 = 2 m/s

Final velocity, v1 = 0

Ball Y:

Mass, m2 = 4kg ;

Initial Velocity, u2 = 0 m/s

Final velocity, v2 = v

(m1u1 + m2u2) = (m2v2 + m1v1)

(8*2 + 4*0) = (4*v + 4*0)

16 + 0 = 4v + 0

16 = 4v

v = 16 / 4

v = 4 m/s

Answer:

Explanation:

This is the Law of Momentum Conservation which for us looks like this:

\([m_xv_x+m_yv_y]_b=[m_xv_x+m_yv_y]_a\) and that should look familiar to you if this is what you are doing in physics. Filling in our particular info:

[(8.0 × 2.0)+ (4.0 × 0.0)] = [(8.0 × 0.0) + (4.0v)] and

16 + 0 = 0 + 4.0v and

16 = 4.0v so

v = 4.0 in the direction of ball X

Explanation:

centripetal force is a force that makes a body follow a curved path. for example, twirling,a lasso, cream seperator etc.

A force that causes an objectmoving in a circular path to move out and away from the centres of it's path is centrifugal force. for example,drifting, banked roads, washing machine etc.

Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. for example, stirring batter, stone tied to a string etc

hope its helpfull♡

Light travels faster in air than glass

Answer:

\(\boxed{Air}\)

Explanation:

Light travels faster in the air than in glass because glass has a higher refractive index than air.

glass is solid and more packed than air, so the light will have more space and less resistance in the air to travel than in glass.

\(-TheAnimegirl-\)

Explanation:

Average speed = distance / time

v_avg = 47 km / 1.72 hr

v_avg = 27.3 km/hr

Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation:

Answer:

b is the equivalent

do u want explanation

The type of galaxy which has arms that contain sites of active star formation and start close to a bulge in the center is: D. normal spiral.

A star can be defined as a giant celestial (astronomical) object that is made up of a luminous sphere of plasma bounded together by its own gravitational force.

Generally, a star comprises two (2) main interstellar hot gases and these include:  

I. Hydrogen (H).

II. Helium (He).

A galaxy refers to a collection of billions of stars, which are existing independently.

This ultimately implies that, the greatest number of stars are found in a galaxy.

According to astronomers, the galaxy is classified into four (4) main categories and these are:

Furthermore, spiral galaxies are divided into two (2) major groups such as:

I. Barred spiral.

II. Normal spiral.

A normal spiral is typically made up of arms containing sites of active star formation and it start close to a bulge in the center.

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Answer:

D) normal spiral

Explanation:

Whoever answered it practically wrote a life story. There's no need for an explanation; just get to the point and tell us the answer. But anways, the answer is D.

The inductance of a coil if the coil produces an emf of 2.50 v when the current in it changes from -28.0 ma to 25.0 ma in 12.0 ms is L   = 0.566 H

An inductor is a passive electronic component that stores energy in the form of a magnetic field. In its simplest form, an inductor consists of a wire loop or coil. The inductance is directly proportional to the number of turns in the coil.

The SI unit of inductance is Henry abbreviated as 'H'. It is defined as the measure of electric current changes at one ampere per second resulting in an electromotive force of one volt across the inductor.

The expression for induced emf

E=−L (di /dt)

L= E (dt / di )

di = 25 - ( -28) = 53 mA = 53 * \(10^{-3}\)  A

dt = 12 ms = 12 *  \(10^{-3}\) sec

E = 2.5 V

L = 2.5 ( 12 *  \(10^{-3}\)  / 53 * \(10^{-3}\) )

L   = 0.566 H

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Answer:

garbage , polluted water dam, unexpected dust particle

B: q magnet or a magnetic field

The wavelength of the wave will be 4 meters. when 5 complete waves occupy a length of 20m.

Wavelength is defined as the space between waves' crests, particularly between electromagnetic or sound wave points. A recurring event's frequency is measured by how many times it occurs in a unit of time. To underline the difference from spatial frequency, it is also occasionally referred to as temporal frequency.

There is an inverse relationship between the frequency and the wavelength of the waves as the wavelength increases the frequency decreases and if the wavelength decreases the frequency increases.

Given that a wave has 5 complete waves occupying a length of 20m. The wavelength of the wave will be calculated as below:-

λ = Distance / frequency

λ = 20 / 5

λ = 4 meters

Therefore, the wavelength of the wave will be 4 meters. when 5 complete waves occupy a length of 20m.

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The initial speed = 25.16 m/s

The maximum height, H = 32.3 m

The initial speed, u = ?

The formula for the maximum height of a projectile is:

Substitute H = 32.3m and g = 9.8 m/s² into the formula and solve for u

The initial speed = 25.16 m/s

Answer: Answer Is B) The magnitude of both forces will decrease as the magnitude of the items (mass for gravity, charge for electrical) increases.

Explanation:

U WELL COM

Answer:

-2

Explanation:

v0=20

v=10

t=5

a=(v-v0)/t=(10-20)/5=-2

Hi There Buddy!

Lets make use of the equations of motion to solve this problem.

We know time of flight is 2u/g

===> 2u/10 = 20 =====> u = 100 m/s

Now, we know the initial velocity, we have to find the maximum height.

H = (u^2)/2g = 10^4 / 20 = 500 m

Answer:

It is B

Explanation:

I did the test

From the given options, the end product of mitosis is Two identical nuclei (option b)

Mitosis is a fundamental cellular process that occurs in somatic (non-reproductive) cells, aiming to create two genetically identical daughter cells from one parent cell. It consists of several stages: prophase, metaphase, anaphase, and telophase.

During prophase, the chromatin (a combination of DNA and proteins) condenses into visible chromosomes, and the nuclear membrane disintegrates. In the subsequent stage, metaphase, the chromosomes align at the cell's equator, ensuring each daughter cell receives an equal number of chromosomes.

Next comes anaphase, where the paired chromosomes are pulled apart and move towards opposite poles of the cell. The final phase, telophase, involves the formation of two separate nuclei around the separated chromosomes.

At the end of mitosis, the single parent cell has divided into two genetically identical daughter cells, each containing a complete set of chromosomes. These daughter cells are fully functional and capable of carrying out their specific tasks within the organism.

So, the correct Answer: B. Two identical nuclei.

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Answer:

303.42

Explanation:

cause i got it right on my question

Answer:

About 22 hours in flight time.

Explanation:

It wouldn't give me the walking time.

Hope I helped ya.

< Sarah >

Answer:

Hmm idk u was tryna take the trip or sum

Explanation: