As part of a carnival game, a 5.00 kg target is freely hanging from a very long and very light wire. Contestants can use one of two 1.5 kg balls to try to hit the target and deflect it high enough to win a prize. Ball A will have an elastic collision and bounce back toward you while ball B will have a nearly perfectly inelastic collision, but rather than sticking to the target, the ball will just drop straight downward to the ground after the collision. You can throw each ball with a velocity of 12 m/s. You are the first to try the game and which ball should you throw? Calculate the expected height the target will reach after each is thrown.

Weight is best defined as C) the force of gravity on an object.

Answer:

v = 0.064 m/s

Explanation:

Given that,

The mass of two skaters = 75 kg

The mass of a ball = 0.4 kg

The speed of the ball = 6 m/s

The speed of skater = 6 m/s

We need to find the velocity of each of the two skaters.

Under the values given the moment with respect to the ball and which is subsequently transmitted to people it would be given by:

\(P=0.4(6)+0.4(6)\\\\=4.8\ kg-m/s\)

We know that,

P = mv

Where

v is the velocity of each skater.

\(v=\dfrac{p}{m}\\\\v=\dfrac{4.8}{75}\\\\=0.064\ m/s\)

So, the velocity of each of the skaters is 0.064 m/s.

To know more about meter

https://brainly.com/question/30295612

#SPJ1

A elephant kicks a 5.0 kg stone with 150 J of kinetic energy.

What is the stone’s speed?

Answer: 7.75 m/s

Answer:

Explanation:

The maximum efficiency that a heat engine could have when operating between the normal boiling and freezing temperatures of water is 26.8 %

η = ( \(T_{H}\) - \(T_{C}\) ) / \(T_{H}\) * 100

η = Efficiency

\(T_{H}\) = Hottest temperature

\(T_{C}\) = Coldest temperature

Hottest temperature = Boiling point

Coldest temperature = Freezing point

\(T_{H}\) = 100 °C = 373 K

\(T_{C}\) = 0 °C = 272 K

η = ( 373 - 273 ) / 373 * 100

η = 100 / 373 * 100

η = 26.8 %

In a heat engine, the heat energy is converted into mechanical energy which will be used to do mechanical work like pushing a piston out from the cylinder.

Therefore, the maximum efficiency that a heat engine could have when operating between the normal boiling and freezing temperatures of water is 26.8 %

To know more about maximum efficiency of a heat engine

https://brainly.com/question/25289326

#SPJ1

The type of motion that is being described is linear motion and it is vector quantity because it has direction.

A linear motion is a type of motion in which the displacement of the object is directly proportional to the speed and time of motion of the object.

Also this type of motion occurs in a straight line.

The formula for final velocity in a linear type of motion is given as;

v = u + at

where;

From the given statement, our equation becomes;

15 m/s = 10 m/s  + 60a

Thus, the above equation shows final velocity formula which is a vector quantity.

Learn more about final velocity here: https://brainly.com/question/25905661

#SPJ1

Answer:

it is correct to conclude that rats prefer food A over food B

the standard deviation is zero

Explanation:

In the experiment performed when both meals are available, rats prefer food A and eat only B when no other is available.

Therefore it is correct to conclude that rats prefer food A over food B

This conclusion is correct because ours is significant with a population of 50 animals all have the same preference for which the standard deviation is zero

Answer:

5seconds

Explanation:

because she was going through the same time

Answer:

0.557 s

Explanation:

Given:

v₀ = 5.46 m/s

v = 0 m/s

a = -9.8 m/s²

Find: t

v = at + v₀

0 m/s = (-9.8 m/s²) t + 5.46 m/s

t = 0.557 s

Answer:

The ratio is  \(R_c:R_e = 4 : 1\)

Explanation:

From the question we are told that

   The period of the satellite is  \(T_c = 8 \ years\)

Generally the period of earth around the sun is \(T_e = 1 \ year\)

Generally from Kepler's third law , which is mathematically represented as

      \(\frac{T_c ^2}{T_e^2} = \frac{R_c^3}{R_e^3}\)

Here  \(R_c\) is the radius of the orbit which the satellite rotate around the sun

         \(R_e\) is the radius of the orbit which the earth rotate around the sun

=>  \(\frac{R_c^3}{R_e^3} = [\frac{8}{1} ]^2\)

=>   \(\frac{R_c}{R_e} = \sqrt[3]{[\frac{8}{1} ]^2}\)      

=>   \(\frac{R_c}{R_e} = \frac{4}{1 }\)      

=>   \(R_c:R_e = 4 : 1\)

Answer:

150   kg-m/s

Explanation:

momentum = m * v

50 * 3 = 150

Based on the information, we can infer that A. represents a Mitochondria.

Mitochondria is a term to refer to the eukaryotic cell organelles responsible for supplying most of the energy necessary for cell activity through the process called cellular respiration.

Based on the information, we can infer that the element that is labeled with the letter A is a mitochondrion because its location is that of a mitochondrion. In this case, the mitochondria is red, although in other models it can be represented with another color. In general, it is given this shape and this color to distinguish it from other elements of the cell.

Note: This question is incomplete. Here is the complete information:

Attached image

Learn more about DNA in: https://brainly.com/question/264225

#SPJ1

The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².

To calculate the average acceleration of the motorcycle, we can use the formula:

Average acceleration = (final velocity - initial velocity) / time

First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.

Converting the final velocity:

Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s

Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:

Average acceleration = (21.67 m/s - 0 m/s) / time

To find the time taken to reach this velocity, we need to use the formula for average speed:

Average speed = total distance/time

Rearranging the formula:

time = total distance / average speed

Plugging in the values:

time = 50 m / 21.67 m/s ≈ 2.31 seconds

Now we can calculate the average acceleration:

Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²

To learn more about acceleration

https://brainly.com/question/2303856

#SPJ8

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is the second option

Explanation:

 Generally the electric force exerted by the charge Q  on the  charge  (q) is mathematically represented as

           \(F_Q = \frac{kqQ}{r^2}\)

 Generally the electric force exerted by the charge 2Q  on the  charge  (q) is mathematically represented as

         \(F_{2Q} = \frac{kq2Q}{2r^2}\)    

Now the net force exerted on q is

       \(F_{net} = \frac{kqQ}{r^2} - \frac{2k q Q}{4r^2}\)

        \(F_{net} = \frac{4kqQ- 2kqQ}{4r^2}\)

        \(F_{net} = \frac{kqQ}{2r^2}\)

Looking at the resulting equation we see that \(F_{net} > 0\)

This implies that the charge q would move to the right

Explanation:

70 degrees North of west = 110 degrees

30 degrees southof east = - 30 degrees:

Vertical components added together =

  75 (sin -30)   +    55 sin 110  =  14.18  N

Horizontal components added together =

 75 cos (-30)   + 55  cos 110    = 46.14  N

Magnitude =  sqrt ( 14.18^2 + 46.14^2 ) = 48.3   N

   direction = arctan ( 14.18 / 46.14) =  ~ 17.1 North of East

Answer:

Answer:

A line passing through the points (-1,-4),(0,0) and (1,4)

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=ky/x=k or y=kxy=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Verify each case

Part 1) A line passing through the points (-4,0) and (0,-2)

This line not represent a direct variation, because the line not passes through the origin.

Part 2) A line passing through the points (-5,4) and (0,3)

This line not represent a direct variation, because the line not passes through the origin.

Part 3) A line passing through the points (-4,-6) and (0,3)

This line not represent a direct variation, because the line not passes through the origin.

Part 4) A line passing through the points (-1,-4),(0,0) and (1,4)

The line passes through the origin

Find out the value of k

k=y/xk=y/x

For the point (-1,-4)

substitute

k=-4/-1=4k=−4/−1=4

For the point (1,4)

substitute

k=4/1=4k=4/1=4

The linear equation is  y=4xy=4x

This line represent a direct variation

Between Kinetic energy and speed: The relationship is quadratic or parabolic. According to the kinetic energy formula, KE = 1/2 mv^2, the kinetic energy is proportional to the square of the speed.

Between potential energy and mass: The relationship is linear. The potential energy is directly proportional to the mass. In simple cases, the potential energy is given by PE = mgh, where mass (m) and height (h) are directly proportional.

Between pressure and volume: The relationship is inverse. According to Boyle's law, the pressure and volume of a gas are inversely proportional when temperature is constant. Mathematically, P1V1 = P2V2.

Between pressure and temperature: The relationship is linear. According to Charles's law, the pressure and temperature of a gas are directly proportional when volume is constant. Mathematically, P1/T1 = P2/T2.

Between displacement and velocity: The relationship is linear. Velocity is the rate of change of displacement with respect to time, so the two are directly proportional.

Answer:

I think it's c or A hopes this help

This observation demonstrates the principle of electrostatics, which is the study of electric charges at rest. It highlights the fact that charged objects can interact with each other, and that opposite charges attract while like charges repel.

When a plastic rod is rubbed with cotton, electrons from the rod are transferred to the cotton, leaving the rod with an excess of positive charges, and the cotton with an excess of negative charges. This results in the rod acquiring a negative charge.

When the same cotton is brought near the cap of a positively charged electroscope, the leaves of the electroscope will diverge. This happens because the positively charged cap attracts the negative charges on the cotton, causing the electrons to move towards the cap. As a result, the leaves of the electroscope acquire a negative charge, and they repel each other due to their like charges.

For more such questions on electrostatics

https://brainly.com/question/17692887

#SPJ11

Answer:

by rotating the filter                    

Explanation:

Rayleigh's scattering is given by the process of the scattering of light by molecules. This is very important physical phenomenon. Polarization is also an effect of light scattering.

A photographer wishes to capture photos of some cloud formation by using the polarizing filter. So the photographer will have to rotate the polarizing filter until the intensity of the light becomes maximum such that the light polarization is acts along the axis of the filter.

The magnitude of the acceleration of  the crate is 1.033 m/s².

The given parameters;

The mass of the crate is calculated as;

W = mg

\(m = \frac{W}{g} \\\\m = \frac{925}{9.8} \\\\m = 94.388 \ kg\)

The normal force on the crate is calculated as;

Fₙ = 925 - 325 x sin(25)

Fₙ = 925 - 137.35

Fₙ = 787.65 N

The frictional force on the object is calculated as follows;

\(F_k = \mu F_n\\\\F_k = 0.25 \times 787.65\\\\F_k = 196.91 \ N\)

The magnitude of the crates acceleration is calculated from the net horizontal force on the crate;

\(\Sigma F_x = 0\\\\Fcos (\theta) - F_k = ma\\\\325\times cos(25) \ - \ 196.91 = ma\\\\97.54 = ma\)

\(a = \frac{97.54}{94.388} \\\\a = 1.033 \ m/s^2\)

Thus, the magnitude of the acceleration of  the crate is 1.033 m/s².

Learn more here:https://brainly.com/question/15742720

Answer:

A(predicts an organisms ability to adapt to its enviroment, it is not a fact that each organization can adapt)

Explanation:

Answer:

There is no change in the kinetic energy of the book and the potential energy of the book-Earth system increases.

Explanation:

This is because velocity is constantly increasing. This supports the idea that the kinetic energy of the book doesn't change and that the potential energy of the book-Earth system increases.

The true statement is that ;there is no change in the kinetic energy of the book and the potential energy of the book-Earth system increases.

We have to note that from the law of conservation of mechanical energy, the sum of the kinetic and potential energy of the book at any point remains constant.

If the book is being raised at constant speed, the the true statement is that ;there is no change in the kinetic energy of the book and the potential energy of the book-Earth system increases.

Learn more about kinetic energy: https://brainly.com/question/15308590

Current in solenoid produces astronger magnetic field inside thesolenoid than outside. The field lines in this region are parallel and closely spaced showing the field is highly uniform in strength and direction. ... Strength of the magnetic field can be increased by: increasing the current in the coil.

\(hope \: it \: will \: ....\)

Answer: (1, 30), (2,10), (3,40), (4,20)

Explanation:

(C)

Explanation:

The circle has a radius r = 0.5 m, which means that its circumference C is

\(C = 2\pi r = 2\pi(0.5\:\text{m}) = 3.14\:\text{m}\)

One revolution means that the stopper travels a distance equal to the circumference of the circle so the velocity of the stopper is

\(v = \dfrac{C}{t} =\dfrac{3.14\:\text{m}}{0.2\:\text{s}} = 15.7\:\text{m/s} \approx 16\:\text{m/s}\)

Answer:

D.  resistance increases

Explanation:

The relationship between resistance and wire length is directly proportional, meaning the longer the wire the greater the resistance.  

Answer: The resistance increases.

Explanation: A wire's resistance is directly proportional to its length. This implies that as a wire's length increases, so does its resistance. The following formula describes this relationship:

R = ρ (L/A)

where L is the wire's length, A is its cross-sectional area, R is the wire's resistance, and ρ is the wire material's resistivity.

This formula shows that the resistance will rise when the wire's length is extended while its cross-sectional area remains the same. On the other hand, if we shorten the wire, the resistance will rise. As a result, choice D is the right response.