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Macie pulls a 40 kg rolling trunk by a strap angled at 30° from the horizontal. She pulls with a force of 40 N, and there is a 30 N rolling friction force acting on trunk. What is the trunk's acceleration? Please show work.
A magnetic field of strength 0.27 T is directed perpendicular to a plane circular loop of wire of radius25 cm. Find the magnetic flux through the area enclosed by this loop.
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
A man on a 50 m high cliff throws a rock vertically. The rock falls back down past theedge of the cliff and hits the ground 5 s after it was thrown. What was the velocity with which the rock was thrown
Two towboats are pulling a plane in the Hudson River. Towboat 1 pulls with a force V1 = 610.0N, at an angle of ?1= 41.0o. What is the direction of the net force
The plane of a 5.60cm by 8.40cm rectangular loop of wire is parallel to a 0.220T magnetic field, and the loop carries a current of 6.45A . What torque acts on the loop?
You launch a 5kg ball from a height of 1 meter. Find the speed of the ball and its kinetic energy at the top of its trajectory, find the velocity and speed of the ball when it reaches the ground
A hot air balloon rises from the ground with a velocity of(2.2 m/s)yhat. A champagne bottle is opened to celebrate takeoff, expelling thecork horizontally with a velocity of (5.6 m/s)xhat relativeto the balloon. When opened, the bottleis 5.0 m abo..
A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. What is the average current supplied to the car's motor
A 765 kg car is being pushed along a flat parking lot at a constant speed of 1.98 m/s, What force is being used to push the car
You want to build a grandfather clock with a pendulum (aweight on the end of a light cable) that has one second between its"tick" (swinging to) and its "tock" (swinging fro). How long do you make the cable
A wrecking ball is hanging at rest from a crane when suddenly the cable breaks, Find the time it takes for the ball to fall from rest all the way to the ground
suppose that r2/r1 = 10.0 cm and ignoring any air inside the shell, find the temperature of the outer surface of the shell.
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