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A father racing his son has two-fifths the kinetic energy of the son, who has half the mass of the father. The father speeds up by 2.0 m/s and then has the same kinetic energy as the son.
(a) Find what is the original speed of the father?
(b) Find what is the original speed of the son?
A point charge is a = 1.5 m below the end of a continuously charged rod with charge Q = 5 ?C, Write an expression for the differential element of the y component of the Electric Field at P in terms of the charge density
A stone is thrown vertically upward at a speed of 28.40 m/s at time t=0. A second stone is thrown upward with the same speed 2.570 seconds later. At what height do the two stones pass each other
An image of a biological sample is to have a resolution of 5 nm. (i) What is the kinetic energy of a beam of electrons with a de Broglie wavelength of 5.0nm.
A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 36.9° past the lowest point on its way up, determine the speed and velocity of the ball
q1. a 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. if the trampoline
a parachutist with mass 86.0 kg jumps from an airplane traveling at a speed vi112 kmhr at a height h2570 m. he lands
A 2kOhm resistor and 400mH inductor are connected in series to a 1300Hz generator with an rms voltage of 15V. what is the rms current in the current
A certain lightbulb has a tungsten filament with a resistance of 19.1 ? when at 20.0°C and 142 ? when hot. Find the temperature of the hot filament
A 0.2kg toy car rolls down ramp. If the car started from rest at a height of 0.30m, At what speed do the two cars move after the collision
A counterweight of mass m = 4.20 kg is attached to a light cord that is wound around a pulley, compute the net torque on the system about the axle of the pulley
A cylindrical tank 3.0m deep is full to the brim with water. Sunlight first hits part of the tank bottom, Find the tank's diameter.
If the LED emits light from a circle with diameter 10mm and is to couple to the fiber which has a50 micro meter diameter core .assume it radiates with afull cone angle 30 degree.
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