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Jim is standing on some scaffolding near his pool while repairing his home. He is at a height of 22 ft above the surface of the water, when he loses his balance and falls into the pool.
a) Using kinematics, compute the velocity with which Jim splashes into the water.
b) Using energy, compute the velocity with which Jim splashes into the water.
q1. suppose we had a rubber ball like the ones used for racquetball and put it inside a container with liquid nitrogen.
Vector and scalar quantities. Part (a) Which of the following below is a scalar quantity? Part (b) What information do vectors quantities convey? Part (c) Which of the following is a vector quantity?
A typical wind speed at midlatitudes at 700 hPa might be 40 knots, while synoptic scale vertical motion is 10 cm/s. what is the magnitude of the total flow
When a hot -air furnace is utilized to heat a house, why is it significant that there be a vent for air to return to the furnace? What happen if this vent is blocked by a bookcase?
a 1580 kg block of granite is pulled up an incline at a constant speed of 1.43 m/s by a cable and winch. What is the power due to the force applied to the block
Two spheres are launched horizontally from a 1.2 -high table. Sphere is launched with an initial speed of 4.5. find the distance that sphere travels from the edge of the table
The temperature in an electric oven is 153 °C. Thetemperature at the outer surface in the kitchen is 35.5 °C. Theoven (surface area = 1.46 m2) is insulated with materialthat has a thickness of 0.0139 m and a thermal conductivity of0.0129 J/(s m C°..
A hydraulic lift is used to jack a 870kg car 12 cm off the floor. What is the area of the input piston
Particles of charge Q1 = +65 µC, Q2 = +43 µC, and Q3 = -80 µC are placed in a line. The center one, Q2, is 0.35 m from each of the others. find the net force on each charge due to the other two
A solid cube of mass 40kg and edge length .30mrests on a horizontal floor. A person then pushes on the upper edgeof the cube with a horizontal force of magnitude F. At what valueof F will the cube start to tip? Assume the frictional force fromthe flo..
A rifle has a mass of 4.5 kg and it fires a bullet of mass 11.6 g at a muzzle speed of 820 m/s. What is the recoil speed of the rifle as the bullet leaves the gun barrel
A Rubber ball mass m movie at a speed of 1.0 m/s in the positive x direction hits another rubber ball of a mass 2m at rest. what are the speeds and directions of the two balls moving afterwards
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