Estimate how much power light bulb will consume
You buy a 60w light bulb in europe where the electricity is 240 v. if you use the light bulb at home in the united states how bright will it be relative to the 60w 120v lightbulbs? estimate how much power it will consume.
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A heavy piece of hanging sculpture is suspended by a 92 cm long, 4.2 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80 Hz. What is the mass of the sculpture?
The sun is more massive than the moon, but the sun is farther from the earth. Which one exerts a greater gravitational force on a person standing on the earth?
An air track has a block with a height h=12.0 cm under one support. The other support is 3.50m away. What is the angle of inclination?
Develop an expression for the quantity of liquid flowing over a sharp-edge V-notch of total angle 2θ, in terms of the head H above the bottom of the notch.
A 50.0 kg pole vaulter running at 10.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?
An athlete at the gym holds a 1.5 steel ball in his hand. His arm is 70 long and has a mass of 4.0 .What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
A second fragment, whose mass is 3.5 , moves away from the point of explosion with a speed of 485 along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity.
A pipe open at one end only has a fundamental frequency of 282 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off a portion of the open end. Now, when both pipes vibrate at their fundamental frequencies, a beat
Calculate the kinetic energy, the elastic potential energy, the gravitational potential energy, and the total mechanical energy (total energy) at (a) the point of release and (b) the equilibrium point. Take the gravitational potential energy
The coefficient of kinetic friction is 0.30. a) Draw a free body diagram showing the forces on the crate if the conveyor belt runs at constant speed.
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