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A proton has an initial speed of 3.5 105 m/s. (a) What potential difference is required to bring the proton to rest? (b) What potential difference is required to reduce the initial speed of the proton by a factor of 2? (c) What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 2?
How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than as the car is stationary? The speed of sound is 343 m/s.
A displacement, s, of an object as a function of time, t, is given by , Find an expression for the acceleration of the object
A system with m = 0.026 kg , k = 35 N/m and b = 0.59 kg/s is driven by a harmonically varying force of amplitude 3.6 N. Find the amplitude of the steady-state motion
Normal blood presure in a human artery is 13.6 kPA; the blood flows with a speed of 0.12 m/s. What is the blood pressure in the clogged part of the artery
Two steel wires of the same length, one with radius r and the other with radius 3r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
A 3.5 g ping-pong ball rubbed against a wool jacket acquires a net positive charge of 1.5muC. Estimate the fraction of the ball's electrons that have been removed
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. estimate the diameter of the pinhole
a proton with a momentum of 200 GeV/c collides with a proton at rest. Calculate the total energy in the center-of-mass system
How much thermal power is radiated by a light bulb when its filament is heated to 2000°C? Assume that the filament is a blackbody of area 1.0 cm2
A group of backpackers, after three days hiking, are 35 mi west of their starting position. Find the magnitude and the direction of their displacement on the third day
A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 145 N. The coefficient of static friction between the foot of the ladder and the ground is 0.40. A man weighing 760 N..
You take a trip to Pluto and back (round trip 11.5 billion km), traveling at a constant speed (except for the turnaround at Pluto) of 44500 km/hr. How long does the trip take, in hours, from the point of view of a friend on earth
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