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Calculate the speed of a proton that is accelerated from rest through a potential difference of 120 V.
Calculate the speed of an electron that is accelerated through the same potential difference.
A hydrogen atom is in its ground state when its electron absorbs a 48-keV photon. What's the energy of the resulting free electron
A charge of 3.0 x 10^8 C exerts a force of 0.045 N on a charge of 5.0 x 10^-7 C. How far apart are the charges
express What is the light intensity on a wall. How far does the ball drop vertically by the time it reaches the plate 18.0 m away.
A radio station broadcasts with a frequency of 1000 kHz with apower of 89 kW. How many photons per second does the antenna emit
Two round rods, one steel and the other copper, are joined end to end. Each rod is 0.795m long and 1.85cm in diameter. The combination is subjected to a tensile force with magnitude 3950N.
Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one
Two negative point charges are separated by 11.0cm and feel a mutual repulsive force of 3.45nC . The charge of one is three times that of the other. How much charge does each have
q1. starting from rest an13 kg block slides13.3 m down a frictionless ramp inclined at 30? from the ?oor to the bottom.
questiona known toy consists of an aligned row of identical steel balls that are suspended bynbspmono?lament so they
A balloon contains 2.5 L of oxygen gas at 1.0 atm, How much work is done in compressing the balloon at constant pressure
A 50 W light bulb shines through two polarizers. After having passed through the first polarizer, the electric field incident on the second polarizer is 5.0 V/m. The second polarizer sits at a 25° angle from the first polarizer.
One cubic meter of water flowing over Niagara Falls in New York drops 92.8 meters. how much heat energy would the water have
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