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A uniform ladder of length L and mass m leans against a frictionless vertical wall, making an angle of 48° with the horizontal. The coefficient of static friction between the ladder and the ground is 0.49. If your mass is four times that of the ladder, how high can you climb before the ladder begins to slip?
L
The distance between two successive minima of a transverse wave is 2.45 m. Five crests of the wave pass a given point along the direction of travel every 14.5 s. (a) Find the frequency of the wave. Hz (b) Find the wave speed. m/s
A 10.0-g bullet is fired from a rifle having a barrel 0.60 m long. Choosing the origin to be at the location where the bullet begins to move, Find the speed of the bullet as it leaves the barrel
Find the first and second derivative with respect to x of f(x) = (exp(x/a)-exp(-x/a))/2, where exp(x)=e^x is the exponential function.
A softball of mass 0.200kg that is moving with a speed of 7.0m/s collides head-on and elastically with another ball initially at rest, Calculate the mass of the target ball
The drive propeller of a ship starts from rest and accelerates at 2.60 multiply.gif 10-3 rad/s2 for 2.15 multiply.gif 103 s. Find the total angular displacement of the propeller
If the rocket gases are expelled at a speed of 2010 m/s, explain how much mass must be expelled?
a ball is thrown upward from the roof of a building, passes the roof going down three seconds later, how fast did the ball strike the ground
Calculate the x-component of vector. A uniform electric field of magnitude 375 N/C pointing in the positive x-direction acts on an electron, which is initially at rest.
A 24-kg boy stands 1 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 218 kg m2. Calculate the speed of the boy relative to the surface of the merry-go-round
Two packing crates of massesm1= 10.0kg and m2=7.00 are connected by a light string that passes over a frictionless pulley, Find the acceleration of the 7.00 kg crate
A parallel plate capacitor has a charge of 2.66X 10^-11 C after being charged by a 15 V battery. The plates are seperated by 2.0 mm of air
A computer disk is 8.0 in diameter. A reference dot on the edge of the disk is initially located at the disk accelerates steadily for 0.50, reaching 2000.
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