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A proton (mass = 1.67 x 10-27 kilogram, charge = 1.6 x 10-19 C) is accelerated from rest through a potential difference of 1000 Volt. Determine what velocity does it achieve?
the mass of a star is 1.71middot1031 kg and it performs one rotation in 34.1 days. find its new period in days if the
two locomotives approach each other on parallel tracks. each has a speed of v 80 kmh with respect to the ground.if
At what angle does it leave the field region?
When you drop a rock into a well, you hear the splash 1.4 sec later. Estimate how deep is the well
The hail comes straight down at a mass rate of m/?t=0.069 kg/s and an initial velocity of v0= -15 m/s. calculate the magnitude of the force exerted by the hail on the roof
To decide the location of her center of mass, a physics student lies on a lightweight plank supported by two scales2.50 {\rm m} apart, as indicated in the figure. If the left scale reads 300 {\rm N}, and the right scalereads132 {\rm N}. Discover the..
As people sing in church, the sound level everywhere inside is 107 dB. No sound is transmitted through the massive walls, but all the windows and doors are open on a summer morning. Their total area is 23.0 m2. (a) How much sound energy is radiated i..
A plane leaves Seattle, flies 85.0mi{rm mi} at 22.0°^circ north of east, and then changes direction to 54.0°^circ south of east. After flying at 121mi{rm mi} in this new direction, the pilot must make an emergency landing on a field. The Seat..
a hydroelectric turbine generator produces an electric power of 20 mwmegawatts. water enters the turbine penstock at
light from a helium-neon laser lambda 633 nm is incident on a single slit. what is the largest slit width for which
occasionally an asteroid will break into fragments due to a collision. these fragments can leave the atsteroid belt and
An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v=5.5m/s in the positive x direction. Write an expression for the normal force, F_n, that the ice pushes against both skates together
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