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A ball of mass 0.203 kg has a velocity of 1.43 m/s right; a ball of mass 0.291 kg has a velocity of 0.396 m/s left. They meet in a head-on elastic collision. Find their velocities after the collision. (assume + is right and - is left) m/s (first ball) m/s (second ball).
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
For your final exam in electronics, you're asked to build an LC circuit that oscillates at 15kHz, What values of inductance and capacitance must you use
What is the frequency of light that has the wavelength in water of 788 nm if the refractive index for this light is 1.33.
Determine the power distribution in carrier and sidebands if the transmitted power is 1,000 W and mf = 1.
When a certain photoelectric material is illuminated with red light (?=715) and then blue light (?=400), calculate the work function of the material
A point charge of ?3.3 ?C is located in a uniform electric field of 34 N/C. You move the charge, find the resulting change in the electric potential energy of the system
A 581-{\rm N} physics student stands on a bathroom scale in an 821-{\rm kg} (including the student) elevator that is supported by a cable. Find the magnitude of the acceleration of the elevator
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
A woman is riding a Jet Ski at a speed of 24 m/s and notices a seawall straight ahead. what is the minimum distance from the seawall that she can begin making her turn and still avoid a crash
A house has a floor area of 102 m2 and an outside wall that has an area of 33 m2. Calculate the magnetic flux that passes through the floor
A 55.0kg archer, standing on frictionless ice, shoots a 90.0g arrow at a speed of 50m/s. What is the recoil speed of the archer
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