AP (Advanced Placement) Physics(B-C): Questions 881 - 883 of 920

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Question number: 881

» Torque and Equilibrium

MCQ▾

Question

A balanced system of four spheres

A Balanced System of Four Spheres

In figure, a balanced system of four spheres is shown.

Four spheres are hanging on a system, as shown in above figure. The distance between spheres and the pivots are labeled in figure. On left side, two identical spheres are hanged. If whole scale system is in balanced, then what is the value of mass of two identical sphere?

Choices

Choice (5) Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question number: 882

» Light & Optics

MCQ▾

Question

Which of the following statements best describes polarization of light by reflection?

Choices

Choice (5) Response

a.

Light reflected from a horizontal surface is generally polarized in the vertical direction.

b.

Reflected light is completely polarized when the reflected beam is perpendicular to the refracted beam.

c.

Light reflected from metallic surfaces is usually polarized.

d.

Polarization is most complete when the light is incident to the surface along the normal.

e.

None of the above

Question number: 883

» Linear Momentum

MCQ▾

Question

A bullet of mass is fired horizontally with a velocity on a wooden block of mass suspended from a support and get embedded into it. The kinetic energy of the wooden + block system after the collision is:

Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

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