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An object is inside a room that has a constant temperature of 293 Kelvin. Via radiation, the object emits three times as much power as it absorbs from the room. Calculate the temperature of the object? Suppose that the temperature of the object remains constant. (in Kelvin's).
When UV light of wavelength 245nm falls on a metal surface, What is the work function of the metal
if the average kinetic energy per molecule of a monatomic gasis 7.0*10-21J, what is the celsius temperature of the gas
A 130 horizontal beam is supported at each end. A 310 piano rests a quarter of the way from one end. What is the vertical force on each of the supports
Particle A carries a charge of 5.0 uC, Particle B is 12.0cm, Find the magnitude and direction of the electric force on A due to B
a car starts at rest. it then accelerates at a rate of 1.3 ms east for 8.2 seconds. if itcontinues as this new velocity
a spring is connected on one end to a wall and the other is free to be compressed. the spring constant is 25 ncm for
an explorer is caught in a whiteout in which the snowfall is so thick that the ground cannot be distinguished from the
Astronauts use a centrifuge to simulate the acceleration of a rocket launch. How many g's of acceleration does the astronaut experience when the device is rotating at the top speed? Each 9.80 m/s2 of acceleration is 1 g
A 3.0 kg block slides down a plane inclined200 to the horizontal with a coefficent of kinetic frictionbetween the block and the pane of 0.275. What would the net work be the net work done
A trained dolphin leaps from the water with an initial speed of 10.2 . The trainer releases the ball at the horizontal distance of 5.47 away, At what height does the dolphin catch the ball
Students hypothesized that by running the electric current through the wire of the apparatus shown here, they could cause the non-magnetic nail to exhibit magnetic properties. What would be a reasonable way to test this.
water flows horizontally through a garden hose of radius 1.0cm at speed of 1.4 m/s. what is the gauge pressure of the water inside the hose
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