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A 200g ball on a 70-cm-long string is swung in a vertical circle about a point 200 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 600 cm above the floor.
What was the tension in the string an instant before it broke?
What are the velocities of the two people after the snowball is exchanged? Disregard friction between skate and the ice.
A horizontal magnetic field of 1.0x10^(-4) T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long, what is the magnitude of the force on the wires
A gas is kept at constant pressure. If its temperature is changed from 15 to 145°C, by what factor does the volume change
What is the total distance traveled by a car if for 130 m with a deceleration of 1.20 m/s^2 and 50 m with a deceleration of 7.10m/s^2?
How to compute for the density of dark matter estimate mass density of dark matter in the solar neighbourhood. Express the answer in units of kg m-3, Msun pc-3, Msun AU-3.
Current & magnetic induction in the electrical circuits.
A 61.0kg skater moving initially at 3.78m/s on rough horizontal ice comes to rest uniformly in 3.24s due to friction from the ice
A 965-kg satellite orbits the Earth at a constant altitude of 94-km. What is the change in the system's potential energy
define How fast are the waves moving.
You are the design engineer in charge of the crashworthiness of new automobile models. What is the average force acting on the car by the inner barrier
A 115-? resistor, a 64.6-mH inductor, and a 190-?F capacitor are connected in series to an ac generator. At what frequency will the current in the circuit be a maximum
An airplane is flying with a velocity of 83.0 at an angle of 25.0 above the horizontal. When the plane is a distance 114 directly above a dog that is standing on level ground, the suitcase drops out of the luggage compartment.
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