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A wheel initially rotating at an angular speed of 2.2 rad/s turns through 32 revolutions during the time that it is subject to an angular acceleration of 0.40 rad/s2. How long did the acceleration last?
An object at rest explodes into three peices of equal mass. One moves east at 20 m/s; What is the velocity of the third piece
Sketch complete free body force diagrams for each crate. A person with his ear to the ground sees a huge stone strike the concrete pavement a moment later 2 sounds are heard from an impact one travels in the air and the other in concrete.
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, What emf and current are induced in the square coil
The height of a helicopter above the ground is given by h = 3.00 t3, where h is in meters and t is in seconds. After 2s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground.
What angle did the hawk make with the horizontal throughout its descent? For how long did the mouse enjoy the free fall.
A 62.00kg student is standing atop a spring in an elevator that is accelerating upward at 3.8 m/s2. The spring constant is 2600-N/m. By how much is the spring compressed.
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
A 84.0kg skydiver can be modeled as a rectangular "box" with dimensions 24.0cm x 47.0cm x 178cm, What is his terminal speed if he falls feet first
Determine the magnitude of the friction force. 5.80 g lead bullet traveling at 460 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is tra..
The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 13.5 W. What is HooRU\'s temperature
The rock reaches a maximum height of 2×10^3 m, above the surface of the planet, before it falls back down. What was the first speed of the rock as it left the astronaut's hand.
A cyclotron used to accelerate an alpha particle (m=6.65 x 10-27 kg q= 3.2 X 10-19 C) has a radius of .50 m and a magnetic field of 1.8 T. what is the force that acts on the alpha particle
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