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A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk?
A car approaches you at a constant speed while sounding its horn. You hear a frequency of 86.0 Hz. After the car goes by, you hear a frequency of 79.0 Hz. What is the frequency of the sound emittted by the horn? (The speed of sound in air is 342 m
Two identical blocks made of extremely hard metal collide with equal and opposite velocities. Is such a collision closer to being completely inelastic?
Question: A 0.24 µF and a 0.30 µF capacitor are connected in series to a 9 V battery. (a) Calculate the potential difference across each capacitor. 0.24 µF capacitor V 0.30 µF capacitor V
Three equal point charges, each with charge 1.80 μC, are placed at the vertices of an equilateral triangle whose sides are of length 0.250 m. What is the electric potential energy U of the system? (Take as zero the potential energy of the three
Ultraviolet light with a wavelength of 60nm shines on a gas of hydrogen atoms in their ground states. Some of the atoms are ionised by the light. What is the kinetic energy of the freed electrons in this process?
Two particles with electric charges Q and ?3Q are separated by a distance of 0.8 m. (a) If Q = 2.2 C, what is the electric force between the two particles? magnitude N direction (b) If Q = -2.2 C, how does the answer change? There is no change. Th
If a person can jump a maximum horizontal distance (by using a 45° projection angle) of 4.72 m on Earth, what would be his maximum range on the Moon, where the free-fall acceleration is g/6 and g = 9.80 m/s2?
What is the potential difference between the plates? What is the magnitude of the electric field between the plates?
Suppose that protons are fired towards the large flat side of a charged conducting plate. Initial speed of the protons is v0, and initial distance d.
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