A high-diver of mass 70.0 kg jumps off a board 10.0 m above the water. If, two seconds after entering the water, his downward motion is stopped, what average upward force did the water exert on him?
1 180 N
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What will be an ideal response?
Faraday's Law: A round flat conducting loop is placed perpendicular to a uniform 0.50 T magnetic field. If the area of the loop increases at a rate of 3.0 × 10-3 m2/s, what is the induced emf in the loop?
A. 4.3 mV B. 0 mV C. 1.5 mV D. 1.7 mV E. 5.5 mV
A "sandwich" is constructed of two flat pieces of metal (2.00 cm on a side) with a 3.00-mm thick piece of a dielectric called rutile (k = 100) in between them. What is the capacitance? (e0 = 8.85 × 10^-12 C2/N×m2)
a. 177 pF c. 100 µF b. 118 pF d. 8.85 µF
A wheel of radius R is rolling on a horizontal surface. Its center is moving forward with speed v. A point on the wheel a distance r/3 below the center is moving forward at a speed 2v/3. The wheel is
A) rolling without slipping. B) not rotating at all. C) made of rubber. D) slipping because its angular speed is too low to be rolling without slipping. E) slipping because its angular speed is too high to be rolling without slipping.