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A cube of solid aluminium has a volume of 1.00 m3 at 20°C. What temperature change is needed to produce a 100 cm3 increase in the volume of the cube?
a 72 mm focal-length lens is used to focus an image on the film of a camera. the maximum distance allowed between the
A positive object touches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves? Answer They move closer together. They are unaffected. They separat..
Initially unpolarized light is sent into a system of three polarizing sheets whose polarizing directions make angles of ?1 = ?2 = ?3 = 50 deg with the direction of the y-axis
Particles with a proper half-life of 1.92 x 10-6 second travel a straight line distance of 500 meter at a constant speed of 2.6 x 108 meter per second. Obtain how many of the particles remain in beam
a pipe discharges wine into a 1.5 m diameter tank. another pipe 15 cm diameter located near the base of the tank is
The position of a particle moving along an x axis is given by x = 23t 2- 5.0t 3, where x is in meters and t is in seconds. Find the maximum positive velocity reached by the particle
A tennis player receives a shot with the ball (0.0600 kilogram) traveling horizontally at 58.0 m/s and returns the shot with the ball traveling horizontally at 34.0 m/s in the opposite direction. Calculate what work does the racket do on the ball
in the movie 2001 spaceodyssy gravity is simulated in a cylindrical space station radius 100 m by rotating at what
the work function for metallic sodium is 2.7ev.a at what distance beyond the surface of metallic sodium is the
In each cycle of its operation, a refrigerator removes 17J of heat from the inside of the refrigerator, How much work per cycle is required to operate this refrigerator
A communications satellite is in a synchronous orbit that is 3.6 x107 m directly above the equator. The satellite islocated between two cities almost on the equator that are separated by a distance of 3.5 x 106 m.
A building is about 336 meter high. Determine by energy considerations the kinetic energy of a 10 kg object after it has fallen 100 meter from this building
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