A small 175-g ball on the end of a light string is revolving uniformly on a frictionless surface in a horizontal circle of diameter 1.0 m. The ball makes 2.0 revolutions every 1.0 s
(a) What are the magnitude and direction of the acceleration of the ball? (b) Find the tension force that the string exerts on the ball.
(a) 79.0 m/s2 toward the center of the circle (b) 13.8 N
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a. True b. False Indicate whether the statement is true or false
All the planets move about the Sun in randomly oriented orbits.
Answer the following statement true (T) or false (F)
Which of the following best explains the hypothesized phenomenon of black hole evaporation?
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What element is notably deficient in Saturn's atmosphere, and why?
What will be an ideal response?