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A mass of 6 kg is moving at 31 m/s in the positive x direction. It collides with a mass of 6 kg at rest in an inlastic, head on collision. What is the magnitude of the velocity of the masses after the collision in m/s?
An uncharged 20 F capacitor is connected to a power supply set to 10 V. How much charge flows onto the capacitor plates, how much more charge flows onto the plates
An object at rest explodes into three peices of equal mass. One moves east at 20 m/s; What is the velocity of the third piece
A plucked guitar string produces a sound wave of frequency 440 Hz. (a) What is the wavelength of the sound wave (assume the speed of sound in air is 340 m/s)? (b) How much time elapses between the impacts of two adjacent compression on your eardru..
Four passengers with a combined mass of 300 compress the springs of a car with worn-out shock absorbers by 4.40 when they enter it. what is the period of vibration of the empty car
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.69 m and 1.02 m, respectively. Calculate the speeds of the tips of both rotors
There are two protons of a helium atom seperated by 1.00e-15m, If the protons were allowed to move, what would be their initial acceleration due to the electric force between them
The inner and outer surfaces of a cell membrane carry a negative and a positive charge, respectively. find the magnitude of the electric field in the membrane
If a particle of mass 4.8 kg is moving east at 10 m/s and a particle of mass 17 kg is moving west at 10 m/s, what is the velocity of the center of mass of the pair
A block of weight w = 20.0N sits on a frictionless inclined plane, which makes an angle theta = 30.0^\circ with respect to the horizontal, as shown in the figure. (Figure 1) A force of magnitude F = 10.0N , applied parallel to the incline, is just..
A stick is resting on a concrete step with 1/4 of its length hanging over the edge. what is the magnitude of the angular acceleration of the stick at the instant shown
The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, with x in meters and t in seconds. At what negative time does the particle pass through the origin
A thin uniform rod has a length of 0.450m and is rotating in a circle on a frictionless table. What is the mass of the bug
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