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After elbow surgery, a therapist examines the patient’s range of motion. At full extension, the angle among her forearm and upper arm is 164º. At full flexion, the angle is 43º. T0hrough the test, only her forearm was moved, while the upper arm stayed stationary. What was the angular displacement of the arm from full extension to full flexion? Please give your answers in degrees and radians.
A sky-diver jumps out of a plane and achives (terminal velocity) before opening his parachute.Explain what is meant by the term terminal velocity,why it occurs and what value of velocity a typical sky diver might experience.Include references to your..
A sphere of radius r starts from rest and rolls without slipping along a curved surface, Find the final speed v of the sphere's center of mass
An air puck of mass 0.029 kg is tied to the string and allowed to revolve in a circle of radius 2.0m on a frictionless horizontal surface. The other end of the string passes through a hole in the center of surface, and a mass of 2.6 kg is tied to it...
Light is reflected from a transparent coffee table. When angle of incidence is 52.2°, the reflected light is completely polarized parallel to surface of the table top. What is the index of refraction of the material of the table?
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?
A projectile is launched from ground level to the top of a cliff which is 95 m away and 135 m high, find the initial velocity of the projectile
Two flexible balls rolling along a frictionless horizontal surface collide with each other. The Larger of the balls weighs 50g and the smaller weighs 30g. find the acceleration of the center of mass of the smaller ball
A young hockey player stands at rest on the ice holding a 1.1 kg helmet. What is the mass of the hockey player
A beam of electrons traveling with speed 0.8 x10^(8) m/s passes through a slit of width 10^(-5) m. Because of the uncertainty in the lateral position of the beam, there will be an uncertainty in the transverse momentum as well.
If the particle is released from rest at the midpoint C, s=100mm, and the acceleration is measured as a= (4s) m/s2 , where s is in meters, evaluate the velocity of the particle when it reaches plate B, s=200mm, and the time it needs to travel C to ..
question1a baseball is thrown at an angle of 20? relative to ground at a speed of 25.6 ms. the ball is caught 42.9416 m
The parallel plates in a capacitor, with a plate area of 6.10 cm2 and an air-filled separation of 3.20 mm, are charged by a 4.30 V , find the work required to separate the plates
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