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A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are μs = 0.75 and μk = 0.64, respectively. The acceleration of gravity is 9.8 m/s2 . What is the frictional force acting on the 38 kg mass? Answer in units of N
A block (mass = 2.4 kg) is hanging from a massless cord that is wrapped around a pulley, Find the angular acceleration of the pulley and the tension in the cord
A battery is designed to have an EMF of 12.0V. When the battery is connected to an unknown resistor in series the terminal voltage drops down to 10.0V. what is the value of the unknown resistor
A football punter accelerates a football from rest to a speed of 7 m/s during the time in which his toe is in contact with the ball (about 0.16 s). what average force does the punter exert on the ball
Antennas for radio transmission and reception are particularly effective if they're about a half-wavelength long. What's the appropriate length for an FM antenna
After a completely inelastic collision, two objects of the same mass, Find the angle between the initial velocities of the objects
A small .500 kg object moves on a frictionless horizontal table in a circular path of radius 1 m. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of..
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. What is the acceleration of the yellow car
Calculate the induced emf in the conductor and if the total resistance in the conductor is R what is the magnitude of the induced current.
A 1-cm-thick layer of water stands on a horizontal slab of glass. After entering the glass, what is the ray's angle from the normal
A line of charge with uniform density of 28.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm
What is the wavelength of the moving proton and how does it compare with the minimum seperation radii of between two protons
If the electric field strength in air exceeds 3.0 ? 106 N/C, the air becomes a conductor, determine the maximum amount of charge that can be carried by a metal sphere4.9 m in radius
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