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Q. A meteor whose mass was about 1.9*10^8 kg struck earth (mE=6.0*10^54 kg) with a speed of about 19 km/s and came to rest in the earth what is the earth's recoil speed and what fraction of the meteor's kinetic energy was transformed to kinetic energy of the earth?
Q. An archer puts a 0.34 kg arrow to the bowstring. An average force of 209 N is exerted to draw the string back 1.3 m. Unless otherwise directed, assume that air resistance is negligible. Draw energy bar graphs to solve the problem.
(a) Assuming that all the energy goes into the arrow, with what speed does the arrow leave the bow?
(b) If the arrow is shot straight up, how high does it rise?
How much energy is dissipated during the 5 minute interval.
A bucket is made from thin sheet metal. The bottom and top of the bucket have radii of 21.0 cm and 39.0 cm, respectively. The bucket is 30.0 cm high and filled with water. Where is the center of gravity.
A converging lens has a focal length of f = 29 cm. If an object is placed 40 cm from the lens, where will the image be formed.
What is the magnitude of the force on an electron that is in the region between the plates at a point accurately 2.52 mm from the positive plate
Determine the tension in each string
The 200 g head of a golf club moves at 40 m/s in a circular ARC of 1.2 m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of swing? Ignore the mass of the club's shaft.
A car of mass M = 800kg travelling at 50km/hour enters a banked turn covered with ice. The road is banked at an angle 20degrees, and there is no friction between the road and the car's tires.
An observer inside the building notices that it takes 0.15s for the tile to pass her window, whose height is 2.20m. How far above the top of this window is the roof.
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source compare to those behind it?
A 550 N physics student stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 450N. (a) Find the acceleration of the elevator. Find the mass of the worker.
A massless spring with spring constant 22.10 N/m hangs vertically. A body of mass 0.280 kg is attached to its free end and then released. Assume that the spring was unstretched before body was released. How far below the initial position does the ..
A stunt pilot performs a circular dive of radius 715m. At the bottom of the dive pilot has a speed of 265 m/s which at that instant is increasing at a rate of 15 m/s2(along the direction of vector B) What total acceleration does the pilot have at ..
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