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A student weighting 800 Newton crouches on a scale and suddenly springs vertically upward. His roommate notices that the scale reads 900 Newton momentarily just as he leaves the scale. Obtain with what acceleration does he leave the Scale?
A woman at an airport is towing her 25.0 kg suitcase at constant speed with pulling on a strap at an angle of 45 degrees above the horizontal. The coefficient of kinetic friction is μk=0.30. Draw a free body diagram of the suitcase.
For lunch you and your friends decide to stopat the nearest deli and have a sandwich made fresh for you with0.350 { kg}of turkey. What is the angular frequency of the oscillation
One kilomole of an ideal gas undergoes a free expansion, tripling it's volume. What is the change of entropy of the universe
Your friend's car has broken down, and you volunteer to push it to the nearest repair shop, If the mass of your friend's car is 1050 kg, what is the normal force between the two bumpers
a proton traveling due north enters a region that contains both a magnetic field and an electric field. the electric
In a uniform electric field of magnitude E, the field lines cross through a rectangle of area A at an angle of 77.0° with respect to the plane of the rectangle
A cannon is placed on the ground and angled 36.87 above thehorizon, to shoot a balloon wich is 500 meters away. At what time does the cannon pass under the ballon
A 117 V potential difference isapplied to a space heater that dissipates 500 W during operation. What is its resistance during operation
A space station, in the form of a wheel 100m in diameter, rotates to supply an "artificial gravity" of 3.7m/s2 for persons who walk around on inner wall of the outer rim. Find out the rate of rotation of the wheel (in revolutions per minute) that ..
A ball (m= .450 kg) is placed at the top of a ramp 1.00 m high. what is the ball's velocity at the bottom of the ramp
an object 4.59 kg traveling at 2.76 ms collides with another object 11.80 kg that has an initial velocity of 1.81 ms in
A heat engine takes in 126 kJ of heat from a reservoir at 820 K and exhausts 88 kJ to a reservoir at 292 K. What is the efficiency of an ideal engine operating between the same two reservoirs
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