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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 bell ringer decides to use a bowling ball to ring the bell. he hangs the 7.3kg ball from the end of a 2m long rope.
100 grams of oxygen and 100 grams of hydrogen gas occupy separate, equal sections of 200 liter tank. find the pressure after the reaction ends
A nonconducting solid sphere of radius 8.40 cm has a uniform volume charge density. The magnitude of the electric field at 16.8 cm from the sphere's center is 2.21 103 N/C.
An automobile and a truck start from rest atthe same instant, with the automobile initially at some distancebehind the truck. What is the speed of each when they are abreast
A man stands on the roof of a 19.0m -tall building and throws a rock with a velocity of magnitude 24.0m/s at an angle of 38.0 degree above the horizontal. Calculate the maximum height above the roof
A raft has a surface area of 100m^2 and a height of 10.0cm. If it is constructed of yellow pine and floating in a lake, calculate how much of the raft will be above the waterline
a 5.5 kg bucket of water is raised from a well by a rope. the acceleration of gravity is 9.81 ms2 . if the upward
An electron with a speed of 2.1 x 106 m/s collides with a hydrogen atom, exciting the atom to the highest possible energy level. What is the wavelength of the photon emitted in the quantum jump
The starship Enterprise speeds by you at a speed of 0.960c. It is measured in your frame to be 100 m long. how fast did you appear to be traveling according to Data
A cannon tilted up at a 26o angle fires a cannon ball at 71 m/s from atop a 12 meter high fortress wall. Obtain the ball impact speed on the ground below
a merry-go-round spins without friction. the merry-go-round is a circular disk of mass m and radius r and that it is
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. What is the average speed of the bicyclist for the trip
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