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A 82 person sits on a 3.5 chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 in diameter. Find the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
A standing wave is produced on a clothesline 8m long when five birds sit on the line. No birds sit on the end. What is the wave speed
A 220g baseball is pitched at 25m/s spinning at 43rad/s. What fraction of its kinetic energy is rotational
A camera has a lens with a focal length of 26.8 cm. how far from the film should the lens be placed
Two periodic waves interfere somehow. Both waves have the same frequency and wavelength. what is the range of amplitue of the resulting wave
An ideal gas in a container is at a temperature of 78.5°C. What is the average translational kinetic energy of a gas
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.60 10-28 kg, what is the speed of the heavier fragment
A merry-g-round (I=1/2MR^2) of mas 250kg and radius 3m has been spun so that is has an angular velocity of 15 rad/s. what is the final angular velocity of the merry-go-round
An enemy ship is on the east side of a mountainous island. The enemy ship can maneuver to within 2500 meters of the 1800 meter high mountain peak and can shoot projectiles with an initial speed of 250m/sec. If western shoreline is horizontally 30..
To understand how to apply the equations for one-dimensional motion to the x and y directions separately in order to derive standard formulas for the range and height of a projectile
A 65.0 kg skier initially at rest begins to slide down at a 10.0 degree slope. how fast will the skier be going a the end of the hill
if the box is moving at a constant speed of 0.35m/s and the coefficient of kinetic friction is 0.12. What is the magnitude of F.
A large tree trunk is floating in the sea. The density of the sea water is 1040 kg/m3, What fraction of the trunk's volume is above the surface of the water
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