CSEC Physics June 2016 P1 Quiz

Which of the following equations must be TRUE in order for the ring to remain stationary?

• L²= M² + N²

• N² = L² + M²

• N² = L² - M²

• N = L + M

What should be the magnitude and direction of a third force which will cause the object to remain stationary?

• X-Y to the left

• X+Y to the left

• X-Y to the right

• X+Y to the right

When a force F is applied to a spring of original length L the new length becomes L + x. What would be the new length of the spring if a force of F/2 was applied instead?

• L + 2x

• 2(L + x)

• L + x

• L + x/2

From the graph it can be deducted that the runner is

• not moving

• going at a steady speed

• going faster and faster

• going slower and slower

• A

• B

• C

• D

Two smooth spheres, A and B, collide head on. Which of the following statements is/are TRUE?

I. The momentum of A is the same after collision as it was before.

II. The momentum of B is the same after collision as it was before.

III. The total momentum of A and B is the same after collision as it was before.

• I

• III

• II and III

• I, II and III

The height of liquid in a vessel is h and its density p. If the atmospheric pressure is X and the acceleration due to gravity is g. What is the pressure on the base of the vessel? ( All quantities are in SI units)

• X + h p

• (X + h) p g

• X + h p g

• (X + h p)g

The specific latent heat of vaporization of water is 2.25 x 10⁶ J kg^-1. When 0.01 kg of water is converted into steam it

• absorbs 2.26 x 10⁴ J

• gives out 2.26 x 10⁴ J

• absorbs 2.26 x 10⁸ J

• gives out 2.26 x 10⁸ J

A body weighs 60N on earth. When taken to the moon the body weighs 10N. Which of the following would be the MAIN reason(s) for the fact that a body weighs 60 N on earth and 10 N on the moon?

I. The earth rotates more slowly than the moon.

II. The earth has a larger mass than the moon.

III. On the moon there is no atmosphere.

• I only

• II only

• II and III only

• I, II and III

Under what conditions may we apply the following gas formula to solve problems?

• I

• II

• I and III

• I, II and III