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A simple pendulum is made is made by tying a 2.00kg stone to a string 4.00m long. The stone is started with an angle 60 degree at initial speed. It is observed to have a speed of v1=8.00m/s when it passes the lowest point. The string is 4m long. What was the initial speed of the stone?
A few bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.3 x 10-8 meter, Find the angular speed of this bacterial motor
A basketball can be modeled as a thin walled spherical shell with a mass of 0.600 kg and a radius of 12.0 cm. What is the rotational kinetic energy of the ball
Find out the mass of the air in a room 3.00m by 4.00m by 5.00m given that the temperature is 200 C at atmospheric pressure (1atm = 101000 Pa)
The equation of motion for an oscillator in vertical SHM is given by y=(0.55m)sin[(160rad/s)t].
The magnitude of the electrostatic force between two identical ions that are separated by a distance of 5.0 10-10 m is 8.28 10-9 N. What is the charge of each ion
Two long, parallel wires are separated by a distance of 3.40. The force per unit length that each wire exerts on the other is 3.20×10-5, and the wires repel each other. The current in one wire is 0.6690.
Assume a cyclist rides a certain high-speed motorcycle. He reaches top speed and then coasts up a hill. the maximum height reached with the motorcyclist is 250m.if 255000J of kinetic energy is dissipated by friction, what was the initial speed of the..
A 65-kg person on skis experiences a constant friction force of 25N for a duration of 15 s. What is the skier's change in velocity
Rocket A has an initial velocity of +4700 m/s, while rocket B has an initial velocity of +9400 m/s. After a timet both rockets are again side by side, the displacement of each being zero. The acceleration of rocket A is -19 m/s2. What is the accel..
Highway curves are usually banked at an angle θ such that the horizontal component of the reaction force of the road on the car traveling at the design velocity equals the required centripetal force. Find the proper banking angle for a car making ..
a 12-pack of omni-cola mass 4.30 kg is initially at rest on a horizontal floor. it is then pushed in a straight line
A person ordering new carpet measures their room to be 19 ft, 2 inches, long and 15 ft, 2 inches wide. What is the area of the room in square meters?
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