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A 72 man's arm, including the hand, can be modeled as a 78 -long uniform cylinder with a mass of 3.7 In raising both his arms, from hanging down to straight up, by how much does he raise his center of gravity?
A small telescope has a concave mirror with a 4.00-m radius of curvature for its objective. Its eyepiece is a 4.25-cm focal length lens. What is the angle of its telescopic image?
What is the magnitude of the force on an electron that is in the region between the plates at a point accurately 2.52 mm from the positive plate
A prism has a vertex angle of 60° and an index of refraction of 1.52. What is the minimum angle of incidence, measured away from the vertex
A 1.5 m long stick with a mass of 0.3 kg is pivoted on a hinge at one end and held horizontally by a spring with spring constant 10 N/m attached at the other end
suppose an electric motor continuously operating with average power 4.65 kW runs the pump. Find its efficiency.
A uniform circular plate of radius 15 cm has a circular hole of radius 3 cm cut out of it. If the mass per unit area of material is 5 g/cm2, what is the mass of this object
Carbon disulfide (CS2) has a vapor pressure of 300 Torr at room temperature, estimate the average time between collisions that the gas is experiencing inside the test chamber
an artillery shell is fired with an initial velocity of 350 m/s at 50.0 degrees measured from the horizontal. it hits the side of a mountain 35.0 seconds later. What are the x and y coordinates of the shell where it explodes, if the coordinates fr..
A bucket filled with dirt of mass 22 kg is suspended by a rope that hangs over a pulley of mass 31kg and radius 0.15 m. everything is at first at rest.
A resistor of unknown resistance and a 42.0-? resistor are connected across a 123.0-V emf device in such a way that an 10.0-A current flows
A tennis ball with a velocity of +7.6 m/s to the right is thrown perpendicularly at a wall. what is the average acceleration of the ball while it is in contact with the wall
A 4.4-nF parallel plate capacitor with a sheet of Mylar (? = 3.1) filling the space between the plates is charged to a potential difference of 180 V and is then disconnected. (The initial capacitance including the dielectric is 4.4 nF.)
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