Which of the following statements is NOT true?
a. Like electric forces between charges, gravitational force varies according to the inverse-square law.
b. The inverse-square law governs electrical forces, but not gravitational forces.
c. Charges can be positive or negative, but mass can only be positive.
d. Electrical forces can be attractive or repulsive, but gravitational force can only be attractive.
e. Two charges can cancel each other out, but nothing cancels out gravity.
b
You might also like to view...
Simple Pendulum: Two simple pendulums, A and B, are each 3.0 m long, and the period of pendulum A is T. Pendulum A is twice as heavy as pendulum B. What is the period of pendulum B?
A. T/
B. T
C. T
D. 2T
E. T/2
The term ______________ refers to the way in which a mineral breaks into splinters, irregularly shaped pieces, or shell-shaped surfaces
Fill in the blank(s) with correct word
If the eye can resolve points separated by 
when viewed at 12.0 inches, how many dpi is this? (dpi = dots per inch)
A. 250 B. 340 C. 380 D. 400 E. 590
For uniformly accelerated motion, which of the following quantities must be zero?
a. the initial acceleration b. the initial velocity c. the initial displacement d. the time rate of change of the acceleration e. the time rate of change of the velocity f. the time rate of change of the displacement