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1. What is the strength of an electric field that will balance the weight of a proton?
2. What is the direction of an electric field that will balance the weight of a proton?
3. What is the strength of an electric field that will balance the weight of an electron?
4. What is the direction of an electric field that will balance the weight of an electron?
The Black body radiation emitted from a furnace peaks at a wavelength of 4.1 x 10^-6 m (0.0000041m)
A heat pump extracts 7.0*10^6 J heat per hour from a well at 280K and delivers its output heat into a house at 320K. what minimum work must be supplied to the heat pump per hour
A proton moves 2.5 cm parallel to auniform electric field of E = 170N/C. How much work is done by the field on the proton?
A .500kg football is thrown toward the eastwith a speed of 15m/s. A stationary reciever catches the ball andbings it to rest in .020s. What is the average force exerted on the reciever
an underwater scuba diver sees the sun at an apparent angle of 47.0deg from the vertical. what is actual direction of
A spring has a force constant of 104 N/m. Determine the distance when potential energy is: 50 J, 100 J
An airplane is making a turn with a given radius in a circle. The lift force (given) is exerted perpendicular to the wings. What is the angle that the wings make with the horizontal
A 750 air-track glider attached to a spring with spring constant 10.5 is sitting at rest on a frictionless air track. What is the amplitude of the subsequent oscillations
the blades in a blender rotate at a rate of 6600 rpm. when the motor is turned off during operation the blades slow to
A 60-kg skier with an initial speed of 16 m/s coasts up a 2.50-m high rise, Find her final speed at the top in m/s, given that the coefficient of friction between her skis and the snow is 0.08
Three capacitors having capacitances of 8.7%u03BCF , 8.7%u03BCF , and 4.1%u03BCF are connected in series across a 31-V potential difference. What is the total energy now stored in the capacitors
An object of mass 4.0 kg is allowed to fall from rest under the force of gravity for 3.4 s. What is the change in its momentum
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