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light from the sun arrives at the earth at the rate of about 1400 wm2 of area perpendicular to the direction of the
the work function for cesium 181 ev is much lower than the work function for other metalsa what is the photoelectric
x-rays with initial wavelength 00665 nm undergo compton scatteringa find the longest wavelength in the scattered
a beam of electrons is accelerated from rest and then passes through a pair of identical thin slits that are 2 nm apart
two cars are 124 miles apart both moving at 6281 mih when the car behind begins to accelerate at 379 ms2 how many miles
an outfielder in baseball throws a baseball from the warning track toward homeplate with a speed of 11183 125 fts at an
a cannon fires a cannonball from the top of a wall at a speed of 9105 ms and an angle of 3118 degrees from the
angry bird is launched horizontally with a slingshot with a speed of 187 ms if the initial height of the angry bird is
suppose 10 mol of a monatomic ideal gas initially at 65 l and 290 k is heated at constant volume to 570 k allowed to
a container of 1m3 contains one cubic meter of liquid water at a temperature of 0 degrees celsius the walls of
a person a is pulling an object with a force of 100 n along the east direction person b is pulling along north with a
a soap film formed in a loop of wire is because of its weight not exactly uniform in thickness but wedge-shaped in
a -50 micro c charge is located at 26 cm 0 on the x axis and a 50 micro c charge is located at -26cm 0 on the -x axis
the avarage intensity of solar radiation that falls normally on surface just outside the earths atmosphere is 14 kwm2a
two small metallic spheres each of mass m 045 g are suspended as pendulums by light strings from a common point the
a big yo-yo radius 02 meters mass 20 kg has a string wrapped about its circumference if yo-yo falls how much time does
a uniform bridge is 100 m long and weighs 200 n if a small car weighing 40 n is 37 m from on end of the bridge how much
the carts of a roller coaster are traveling 2 ms over the top of the first hill if there is no energy loss due to
a pulley system lifts 400n to height of 15 meters in 6 seconds how much work is done on the object what power was
a bottle rocket is launched at an angle of 30 degrees from the ground with a speed of 200ms what is the range of the
a hubcap comes off a car that is traveling 100ms if it stops rolling after traveling 25 ma how many revolutions did it
a submarine sends a sonar signal which returns from another ship 2250 s later how far away is the other ship if the
a merry-go-round rotates at 5 rpm and is shaped like a disc with a radius of 3 m and a mass of 100kg if a child m40 kg
an echo bounces from a building exactly 100 s after you honk your horn how many feet away is the building if the air
a 58 kg gymnast does a vault he is traveling at 56 ms just before he lands he comes to a stop in 008 s what is the