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A skydiver of mass 80 kg jumps from a slow-moving airplane and reaches a terminal speed of 50 m/s. What is the acceleration of the skydiver when her speed is 30 m/s? Let down be the positive direction.
a parallel-plate capacitor has an area of 5.50 cm2 and the plates are separated by 1.06 mm with air between them. it
if the solenoid in exercise 5.5 is free to turn about the vertical direction and a uniform horizontal magnetic field of
a simple reaction-time test a meter stick is held vertically above your hand with the lower end between your thumb and
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
A thin, cylindrical rod L = 20.6 cm long with a mass m = 1.20 kg has a ball of diameter d = 6.00 cm and mass M = 2.00 kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top as shown in the figure be..
the decay constant of radon is .181day. a sample of radon contains 6.00x108 radon atoms. how many atoms are left after
t a point 11km deep in the ocean, the pressure is 1.13e8Pa. Find the density of water at the bottom of the ocean
Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -2.86E-6 C. Object B is identical to object A and is also electrically neutral.
A rectangular barge, 4.0 m long and 1.5 m wide, floats in fresh water. (a) Find out how much deeper it floats when its load is a 380-kg horse. (b) If the barge can only be pushed 15 cm deeper into the water before water overflows to sink it, how m..
Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km, in a period of 365.26 days. what is the angle between the Earth-Sun line and the Mars-Sun line
Suppose you do 457 J of work on 1.18 moles of ideal gas in a perfectly insulated container. By how much does the internal energy of this gas change.
In a television set, the power needed to operate the picture tube comes from the secondary of a transformer. Determine the secondary voltage
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