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In walking across a carpet, you acquire a net negative charge of 60 μC. Find how many excess electrons do you have?
A ball of mass 10.7 g with a speed of 27.1 m/s strikes a wall at an angle 24.0o and then rebounds with the same speed and angle. calculate the average force exerted by the ball on the wall
The 1.1 kilogram block is tied to the wall with rope. It sits on the top of the 3 kilogram block. Determine what is the acceleration of the 3 kilogram block
q1. a cylindrical container with a cross-sectional area of 65.2 cm2 holds the fluid of density 846 kgm3. at the bottom
question a turntable disc of mass 3 kg radius 1.2 m and moment of inertia 2.16 kgm2 is spinning about its center at
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
A very narrow hole is drilled all the way through the Earth (through its center) and evacuated (i.e. there is neither air resistance nor friction). A small object of mass m is dropped into the hole at the surface.
The electron in a hydrogen atom is infinitely distant at zero potential energy, What is the nearest principal quantum number in this state
Compute the wavelength of the light emitted by hydrogen as predicted by the Rydberg formula ( 1/λ=R(1/n'2- 1/n2)) with n=4 and n' =3
read the article basic choices and constraints on longterm energy supplies paul b. weisz. summarize the article in
A beam of light with red and blue components of wavelengths 670 nm and 425 nm, respectively, what is the index of refraction of the blue light
A particle travels counter clockwise around the origin at constant speed in the circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R that lie on the x axis and the y axis..
A sports car moving at constant speed travels 90 m in 4.9s. If it then brakes and comes to a stop in 4s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be direction of travel.)
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