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Mademuasel [1]
3 years ago
8

A student initially at rest on a frictionless frozen pond throws a 1 kg hammer in one direction. After the throw, the hammer mov

es off in one direction while the student moves off in the other direction. Which of the following correctly describes the above situation?
a. The hammer will have the momentum with greater magnitude.
b. The hammer will have the momentum with greater magnitude.
c. The hammer will have greater kinetic energy.
d. The student will have greater kinetic energy.
Physics
1 answer:
Zanzabum3 years ago
3 0

Answer:

C

Explanation:

The hammer will have greater kinetic energy

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An office window has dimensions 3.1 m by 2.1 m. As a result of the passage of a storm, the outside air pressure drops to 0.954 a
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Answer:

Net forces which pushes the window is 30342.78 N.

Explanation:

Given:

Dimension of the office window.

Length of the window = 3.1 m

Width of the window = 2.1 m

Area of the window = (3.1\times 2.1) = 6.51\ m^2

Difference in air pressure = Inside pressure - Outside pressure

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Conversion of the pressure in its SI unit.

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We have to find the net force.

We know,

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⇒ Pressure=\frac{Force }{Area}

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The net forces which pushes the window is 30342.78 N.

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3 years ago
A strip of copper 190 µm thick and 4.20 mm wide is placed in a uniform magnetic field of magnitude B = 0.78 T, that is perpendic
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Answer:

V = 9.682 × 10^(-6) V

Explanation:

Given data

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solution

we know v formula that is

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V = magnitude× current / (no of charge carriers ×thickness × e

V = 0.78 × 32 / (8.47 x 10^28  × 190 × 1.602 x 10^(-19)

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