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A cart of a mass 300 kg is pushed up a track at an angle of44 degrees from the bottom to a position that is 30m higher thanthe bottom in a time of 25 seconds. There is no friction.
What is the velocity at the bottom?
If the cart began its upward journey to the top by being propelledfrom a spring that as compressed a distance of 4m, then what is thespring constant?
A car of mass 930 kg is traveling over the top of a hill, If the hill has a radius of curvature of 38 m and the car is traveling at 13 m/s, what is the normal force between the hill and the car at the top of the hill
Green light at 532 nm lights a diffraction grating with 800 lines per cm. Diffraction pattern is on screen 7.5m away. Calculate distance between the diffraction peaks on the screen
What voltage must be applied to the 10.0 µF capacitor of a heart defibrillator to store 450 J in it? Find the amount of stored charge
A mass attached to a spring stretches it 2.5 cm from equilibrium. What is the angular frequency of the oscillation
A copper rod of length 0.78 m is lying on a frictionless table (see the drawing). What must be the direction of the current in the copper rod
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to49 m/s (around 110 mi/h) in a time of 8.5 s.The mass of the car and riders is 5500 kg. Find the average net force exerted on ..
A block of mass m=0.20 kg is attached to a spring with force constatnt k=12.0 N/cm. Determine the decrement of the motion
Two converging lenses having focal lengths of f1 = 10.9 cm and f2 = 20.0 cm are placed d = 50.0 cm apart. What is the overall magnification of the system
A 250 g block of wood hangs from a light string 0.78 m long. The block is shot with a bullet of mass 4.2 g, what was the velocity of the bullet just before it hit the block
A mass M = 95.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, what is the acceleration a of the van
Assume that the interior of the earth can be treated as an incompressible fluid in equilibrium. {HINT: Let ? denote the density; take ? to be a constant; ? = M/V.}
Jack and Jill are maneuvering a 3400 kg boat near a dock. Initially the boat's position is m and its speed is 1.0 m/s. How much work does Jill do
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