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A wheel, starting from rest, rotates with a constant angular acceleration of 2.30 rad/s2. During a certain 1.00 s interval, it turns through 5.35 rad.
(a) How long had the wheel been turning before the start of the 1.00 s interval?
(b) What was the angular velocity of the wheel at the start of the 1.00 s interval?
The single cable supporting an unoccupied construction elevator breaks when the elevator is at rest at the top of a 175 m high building.
A 4 kg object moving at 17 m/s in the positive x direction has aone-dimensional elastic collision with an object initially at rest. After the collision the object of unknown mass has a velocity of 30 m/s in the positive xdirection. What is the unk..
A car starts from rest and travels 20 m within 4 seconds, in a straight line, at constant acceleration. What is the acceleration of this car
A lens with 50-cm focal length produces a real image the same size as the object. How far from the lens is the image
Ultrasound can be used to deliver energy to tissues for therapy. It can penetrate tissue to a depth approximately 200 times its wavelength. what is the approximate depth of penetration
An astronaut in a rocket passes a meter stick moving parallel to its long dimension. How fast is the rocket moving with respect to the meter stick
A beam of light originates from point P in a 3 mm thick glass block. It undergoes total internal reflection at point Q and strikes point R a distance d=5.4mm. If the glass block is in air, what is the glass' index of refraction?
You are in a hot air balloon (yes, another balloon problem!) rising from the ground at a constant velocity of 3.00 m/s upward. How long does the cork remain in the air
X - rays with an energy of 100 KeV Compton scattering from a target. If the scattered rays are detected at 40° relative to the incident rays, find a) The compton wavelength shift ?λ at this angle. b) The energy of the scattered x- ray.
A constant horizontal force Fa pushes a 2 kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. It gives package's x and y velocity components versus time t. What is the magnitude of Fa.
On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 4.10 kg, What is its acceleration
a football punter accelerates a football from rest to a speed of 8 ms during the time in which his toe is in contact
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