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1. A 58-kg skier is going down a slope oriented 35° above the horizontal. The area of each ski in contact with the snow is 0.13 m2? Determine the pressure that each ski exerts on the snow.2. Measured along the surface of the water, a rectangular swimming pool has a length of 15 m. along this length, the flat bottom of the pool slopes downward at an angle of 110 below the horizontal, from one end to the other. By how much does the pressure at the bottom of the deep end exceed the pressure at the bottom of the shallow end?3. A dentist's chair with a patient in it weighs 2100 N. The out plunger of a hydraulic system begins to lift the chair when the dentist's foot applies a force of 55 N to the input piston. Neglect any height difference between the plunger and the piston. What is the ratio of the radius of the plunger to the radius of the piston?4. A duck is floating on a lake with 25% of its volume beneath the water, what is the average density of the duck?
a ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. it rebounds from the floor to reach a height of
a racetrack has the shape of an inverted cone. on this surface the cars race in circles that are parallel to the ground
a horizontal wire is hung from the ceiling of a room by two massless strings. the wire has a length of 0.23 m and a
Consider an insulated enclosed volume of 27m^3 containing dry air at 23 degrees celsisus and 980mb, What is the specific volume and mass of the air sample
A ball is thrown straight up from ground level. It passes a 2-m-high window. The bottom of the window is 7.5 m off the ground. The time that elapses from when the ball passes the bottom of the window on the way up, to when it passes the top of the wi..
Determine the heat transfer and work for each of the processes. What is the internal energy change for Process 1-2? What is the internal energy change for Process 2-3? (There is an answer posted for the same question, but the answer does not appea..
A woman starts to swim directly across a 5.0-km-wide river. Her speed with respect to the water is 1.3 m/s. How much time does it take her to cross the river
in an electrically heated home the temperature of the ground in contact with a concrete basement wall is 12.0 oc. the
Two long parallel wires are separated by 2.0 cm. the current in one of the wires is three times the other current. What is the greater of the two currents
At what height above the earth is the free-fall acceleration 20% of its value at the surface. What is the speed of a satellite orbiting at that height
A 12 gram ball is dropped form a height of 2.50m and is moving and is moving at 3.2m/s just before it hits the floor. how much total mechanical energy was lost in the fall
If the initial speed of the ball is doubled, how does the maximum height change
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