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A circular saw blade 0.210m in diameter starts from rest. In 7.50s, it reaches an angular velocity of 160 rad/s with constant angular acceleration. Find the angular acceleration and the angle through which the blade has turned in this time.
a) rad/s^2
b) rad
A 70Kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, decide average resistive force exerted on him by the water.
Two large flat planes are separated by a distance d. the plates are connected to a battery. Write an expression for the capacitance
An air bubble has a volume of 1.45 cm3 when it is released by a submarine 100 m below the surface of a lake. What is the volume of the bubble
A 0.500 kg football is thrown toward the east with a speed of 10.0 m/s. A stationary receiver catches the ball and brings it to rest in 0.020 s. What is the average force exerted on the receiver
You need to push a box across the room. which side of the box should be the side down on the floor
Two ropes are pulling upward on a large crate. The weight of the crate is 350. N. The tension in the left rope is the same as the tension in the right rope. what is the tension in the left rope
A 5.4 m-long rod of (constant diameter 4.6 mm) is made of 2.0 m of copper and the remainder of aluminum, What is the temperature at the interface between the copper and aluminum
A 1 kg stone is thrown upward from a 20 m building with a vertical velocity of 15 m/s. Compute The velocity at impact with the ground
A wave on a string has an amplitude of 0.32 m, a frequency of 120 Hz, and a wavelength of 1.4 meters. What is the maximum speed of a point of the string
q1. a chair of mass 14.0 kg lies atop a horizontal floor the floor is not frictionless. you push on the chair with a
A positively charged particle of mass 6.20 10-8 kg is traveling due east with a speed of 30 m/s and enters a 0.41 T uniform magnetic field. What is the magnitude of the charge of the particle
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force on the rocket during its ascent
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