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3 years ago

PLEASE HELP I NEED AN A FOR THIS TO PASS

Physics

1 answer:

Troyanec [42]3 years ago

4 0

Answer:

Explanation:

This is the correct answer because given that this is a closed system, this means that energy is not lost but only changes form. The fact that the ball bounces shorter each time shows that energy is being transformed and not lost. Because of this, the ball must be transforming kinetic energy into sound which is why B is correct

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Moving sideways on the balls of the feet

Alchen [17]

Answer:

whats the question?

Explanation:

maybe sphere if its a shape though

3 0

3 years ago

A straight wire segment 5 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force

SIZIF [17.4K]

Answer:

The magnitude of the force on the wire is 2.68 N.

Explanation:

Given that,

Length of the wire, L = 5 m

Magnetic field, B = 0.37 T

Angle between wire and the magnetic field, $\theta=30^{\circ}$

Current in the wire, I = 2.9 A

We need to find the magnitude of the force on the wire. The magnetic force in the wire is given by :

$F=BIL\ \sin\theta\\\\F=0.37\ T\times 2.9\ A\times 5\ m\times \ \sin(30)\\\\F=2.68\ N$

So, the magnitude of the force on the wire is 2.68 N. Hence, this is the required solution.

7 0

3 years ago

A small compact car collides with a sticks to a very large SUV. Which statement about the momentum involved in the collision is

Darina [25.2K]

Answer:A

Explanation:Actually it’s no A i actually don’t know it, I’m just doing this because I have to do it.

8 0

3 years ago

The radii of curvature of a biconvex lens are 4 cm and 15 cm. The lens is in air, its index of refraction is 1.5. An object is a

rewona [7]

Answer:

v = 6.315 cm

Explanation:

given,

R₁ = 4 cm = 0.04 m

R₂ = 15 cm = 0.15 m

n =1.5

$\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}=(n-1)(\dfrac{1}{R_1}-\dfrac{1}{R_2})$

$\dfrac{1}{v}-\dfrac{1}{-1}=(1.5-1)(\dfrac{1}{0.04}+\dfrac{1}{0.15})$

$\dfrac{1}{v}+1 = 0.5 \times 31.66$

$\dfrac{1}{v} = 15.833$

v = 0.06315 m

v = 6.315 cm

hence, the distance of the image from the back surface is v = 6.315 cm

8 0

3 years ago

A 50 kg stcel ball is hanging from two cables that make 120 degrees with each

FrozenT [24]

Answer:

T1 = 490.5 [N], T2 = 490.5[N]

Explanation:

First, we must draw a free body diagram of the steel ball hanging and the two wires holding it as well as the angle forming the wires between them.

The free-body diagram can be seen in the attached image.

As the cables are symmetrical with respect to the vertical axis, the force in cables 1 and 2 is equal, so when performing a force sum equal to zero on the Y-axis, we can find the force value of any cable.

The solution of the equations can be seen in the attached image

3 0

4 years ago