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At the surface of a certain planet, the gravitational acceleration g has a magnitude of 13.0 m/s2. A 22.0 kilogram brass ball is transported to this planet. Find the mass of the brass ball on the Earth and on the planet (in kg)? Find the weight of the brass ball on the Earth and on the planet (in N)?
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How long will the mortar shell remain in the air
A 1000kg car moving at 40mph hits a 750 kg parked car. If they move off locked together after the collision how fast are they moving
Calculate the commutation relation for the inner product of position and momentum and angular momentum. In other words, what is: [p\cdotr, L] (vector p dotted with vector r, vector L)
A certain ac signal at 60 Hz is applied across a 40-mH inductor and a 200-? resistor. What is the power factor of this circuit
Two blocks are connected by a lightweight, flexible cord that passes over a single frictionless pulley. If m1 >> m2, find the acceleration and tension of each block
Two identical pucks are on an air table. Puck A has an initial velocity of 4.0 m/s in the positive x-direction. What is the speed and direction of puck B after the collision
Squids and octopuses propel themselves by expelling water. They do this by taking the water into a cavity and then suddenly contracting the cavity, How much kinetic energy does the squid create for this escape maneuver
A 3500 kg block falls vertically through 5 m and then collides with a 400 kg pile, driving it 3.0 cm into bedrock. Assuming that the block-pile collision is completely inelastic, find out the magnitude of the average force on the pile from the bed..
The position of an object connected to a spring varies with time according to the expression x = (4.4 cm) sin(6.9?t). (a) Find the period of this motion. s (b) Find the frequency of the motion. Hz (c) Find the amplitude of the motion. cm (d) Find ..
When Brewster's angle of polarized light due to a reflection of light off of the surface of water makes a ray of light, how is the ray of light related to the ray of light that is refracted by the incoming beam into the water?
A 0.75 kg object is suspended by a string from the ceiling of a car while the car travels in a 30 m radius circle at 25m/s. What angle does the string make with the vertical?
compare the electric force holding the electron in orbit (r=0.53*10^-10m) around the proton nucleus of the hydrogen atom, What is the ratio of these two forces
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