Einstein's famous equation E0 = mc2 is a statement of the equivalence of energy and the square of the speed of light
Indicate whether the statement is true or false
F
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A Ferris wheel rotating at 20 rad/s slows down with a constant angular acceleration of magnitude 5.0 rad/s2. How many revolutions does it make while slowing down before coming to rest?
A) 3.2 B) 40 C) 6.4 D) 20
A series circuit contains a 1.0-k ? resistor, a 5.0-mH inductor, and an ideal 25-V power supply. What is the time constant for the circuit?
A) 1.6 s B) 1.6 ?s C) 5.0 s D) 5.0 ?s
An automobile manufacturer claims that its product will, starting from rest, travel 0.40 km in 9.0 s. What is the magnitude of the constant acceleration required to do this?
a. 9.9 m/s2 b. 8.9 m/s2 c. 6.6 m/s2 d. 5.6 m/s2 e. 4.6 m/s2
You whirl a 2 kg body attached to a 1 meter cord around your head in a nearly horizontal circle with a speed of 4 m/s. The tension in the cord is
a. 2 N b. 4 N c. 8 N d. 16 N e. 32 N