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A uniform 7.6 kg ladder is leaning against a frictionless vertical wall, with which it makes a 15 deg angle. The coefficient of friction between ladder and ground is 0.26. how massive a person would make the ladder slip?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; How high above the ground will the ball be when it gets to Julie
q1. in the 1950s an experimental train that had a mass of 2.30 x 104 kg was powered across a level track by a jet
A 30 kg box is pushed by a horizontal force of 900. N as it slides up a plane inclined at an angle of 30 degrees with the horizontal. The coefficient of friction between box and plane is 0.20. How far-off will the box travel along the plane in 5.0..
You ski straight down a 44.4° slope, starting from rest and traveling a distance of 12.3 m along the slope. Find your final velocity
A solid cylinder (with a radius of 25cm and a mass of 4.4kg) is rotating counterclockwise with an angular speed of 0.5 revolutions per second just above a flat surface. What is the angular velocity of the cyclinder after .35 seconds slipping
The pendulum in a grandfather clock is made of brass and keeps perfect time at 15. How much time is gained or lost in a year if the clock is kept at 29
A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. what is the minimum angular spread of the beam
The air-track carts in the figure are sliding to the right at 1.0 m/s. The spring between them has a spring constant of 120 N/m and is compressed 4.5 cm. Compute the speed of the air track carts held by a string together.
A toy car with mass of m=166 GRAMS crashes into a spring with constant k=45 N/m. If the car was going v=1.5 m/s, then how far will the spring compress.
A bug is splattered on a car windshield. Evaluate the magnitude of the windshield's force on the bug to the magnitude of the bug's force on the windshield.
100 Joules of heat energy are transferred to 20g of mercury. By how much does the temp. increase
25-kg ball begins rolling from rest with constant angular acceleration down a hill. how long will it take to make the next complete revolution
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