A runner runs on a circular path of radius 10 m. What is the magnitude of the displacement of the jogger if he runs
(a) half-way around the track?
(b) all the way around the track?
What will be an ideal response?
(a) 20 m (b) 0 m
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Gravitational Force: Two identical tiny balls of highly compressed matter are 1.50 m apart. When released in an orbiting space station, they accelerate toward each other at 2.00 cm/s2. What is the mass of each of them? (G = 6.67 × 10-11 N ? m2/kg2)
Fill in the blank(s) with the appropriate word(s).
Vibrating membranes relate to which instrument?
A) violin B) drum C) oboe D) all of the above E) none of the above
Which planet has the second largest moon in the solar system?
a. Jupiter b. Saturn c. Uranus d. Neptune
Equilibrium: A uniform 1200-N piece of medical apparatus that is 3.5 m long is suspended horizontally by two vertical wires at its ends. A small but dense 550-N weight is placed on the apparatus 2.0 m from one end, as shown in the figure. What are the tensions, A and B, in the two wires?
A. A = 880 N, B = 880 N B. A = 840 N, B = 910 N C. A = 9000 N, B = 8200 N D. A = 910 N, B = 840 N E. A = 8200 N, B = 9000 N