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At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 8.9 meter above the water. One diver runs off the edge of the cliff, tucks into a "ball," and rotates on the way down with an average angular speed of1.4 rev/s. Neglect air resistance and Find the number of revolutions she makes while on the way down. rev
A solid cylinder is released from rest and rolls without slipping down a 4.0 degree incline. what will the timer read
a step-down transformer converts 120v ac to 6.00v ac rms values and the secondary winding is connected to a purely
During a sleet storm, the roads are covered with frictionless ice. A car of mass 1000 kg traveling east at a speed of 6m/s slams into a stationary truck of mass 2000kg. Determine the velocity of the truck just after the collision
The intensity of sunlight striking Earth's upper atmosphere (called the solar constant) is 1.35 kW/m2. Find the radiation pressure at the surface of the sun
A particle moves with constant velocity [4, -2, 1] m/s. If its mass is 3 kg, what is its kinetic energy? One of the forces acting on it is given by F = [-1, 2, 2] N. Find the work done by this force on the particle as it moves a distance of 3 m.
Starting from rest, a 4.10-kg block slides 2.6 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436, Determine the work done by normal force
A 0.175 kg baseball is thrown upward with an initial speed of 12.0 m/s. What is the force on the ball when it reaches its peak
When exposed to the weakest sound it can hear, the ear's energy ofvibration is about 10-19J. If the force constant of theear is 20N/m, what is the amplitude of vibration of the eardrum? How does this compare to the size of an atom(~5 x10-10m)?
A slide projector needs to create a 98.0cm -high image of a 2.20cm cm -tall slide. The screen is 304cm cm from the slide. What focal length does the lens need
An object has a kinetic energy of 279 J and a momentum of magnitude 24.3 kg·m/s. Find the speed and the mass of the object
The body contains many small currents caused by the motion of ions in the organs and cells. how large is the current in the heart
The mass of Jupiter is 300 times that of the earth, and the diameter is 11 times that of the earth, find the acceleration due to gravity on Jupiter's surface
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