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Two identical balls are thrown from the top of a cliff, each with the same speed. One is thrown straight up, the other straight down. How do the kinetic energies and speeds of the balls compare as they strike the ground?
The weights of various components of the truck are shown. Replace this system of forces by an equivalent resultant force and specify its location.
Suppose the G-string of a guitar is 3.3 m long and has a linear density of 87.4 mg/m. What is the fundamental wavelength of the G-string for the guitar
Two carts with masses of 12.5 kg and 4.5 kg, respectively, move in opposite directions on the frictionless horizontal track with speeds of 8 m/s and 5 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the..
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. If the asteroid slows down over a distance of 1.3× 106 m determine the magnitude of the force
A 1000N force inclined at 40 degrees with the horizontal is applied to move a block mass 150kg. compute the normal force acting on block
Vector A has magnitude 4.0m and points to the right; vector B has magnitude 3.0m and points vertically upward. Find the direction of a vector C such that A + B + C =0. Express your answer in degrees counterclockwise from A using two significant fi..
a hollow metal sphere has 7cm and 11cm inner and outer radii respectively. the surface charge density on the inside
suppose 2.00 g of hydrogen is separated into electrons and protons. suppose also the protons are placed at the earths
Three charges (Q1, Q2, and Q3) of equal size and same sign are places on the corners of an equilateral triangle. What is the net electric field at the geometric center of the triangle
An ambulance is generating a siren sound at a frequency of 2400 Hz. The velocity of sound is 34.0 m/s. What is the frequency of the siren perceived by the observer
A charged oil droplet falls 5.0 mm in 20.0 s at terminal speed in the absence of an electric field. What are the mass and radius of the drop
A 10 volt AC voltage source is connected to a transformer with 2 primary coils and 4 secondary coils. The output of the first transformer is connected to the input of another transformer with 8 primary coils and 16 secondary coils as shown below. ..
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