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You swing a rock in a circle at a constant speed perpendicular to the ground (up and down). The speed is 3m/s, the radius is 0.75m, the mass is 0.2 kg.
Draw free body diagrams at the top and the bottom.
What is the rope's tension at the top? What about the bottom?
As the speed decreases the tension decreases, what happens at top if the tension goes to zero?
Stones are thrown horizontally with the same velocity from the tops of two different buildings. Find the ratio of the height of the taller building to the height of the shorter building
A point charge +6.7 µC is placed at the origin, and a second charge -3.9µC is placed in the x-y plane at (0.35m , 0.45m ). Where should a third charge be placed in the plane so that the net force acting on it is zero
A concave shaving mirror has a radius of curvature of +39.8cm. It is positioned so that the (upright) image of a man's face is 3.48 times the size of the face. How far is the mirror from the face?
A car starts from a speed of 10 m/s with an acceleration of 2 m/s^2. What is the time needed for the car to reach 30 m/s?
How much heat does it take to enhance the temperature of 8.00 of an ideal monatomic gas from 22.0 to 61.0 if the gas is held at constant volume.
A 40 kg block is at rest on a frictionless horizontal surface and is attached to one end of a horizontal spring, which has a spring constant of 500 N/m. Find the maximum elastic potential energy stored in the spring after the collision
a fancy lecture demo is shown in the figure above an electrically charged ball of mass 0.960 grams is suspendon a
a driver sets out on a journey. for the first half of the distance she drives at the leisurely pace of 30 mih she
q1. an object falls because of gravity at the rate of -920 cms2 - sign is indicative of a downward direction for 10.00
question1a creamy salad dressing is completed of heavy cream corn oil and vinegar as well as a pinch of dry mustard
What is the minimum thickness of coating which should be placed on a lens in order to minimize reflection of 646 nm light? The index of refraction of the coating material is 1.32 and the index of the glass is 1.57.
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 25 m/s, Compute what is the angle that the string makes
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