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A 72 kg man in a 5.0 kg chair tilts back so that all the weight isbalanced on two legs of the chair. Assume that each leg makescontact with the floor over a circular area with a radius of1.0 cm, and find the pressure exertedby each leg on the floor.
Pa
A snowboarder of mass 73 kg slides down the trail shown in the figure below. The first part of the trail is a ramp that makes an angle of 29° with the horizontal, Find the work done by gravity on the snowboarder
the absolute portential at the exact center of a square is 3.0v when a charge of +Q is located at one of the squares corners. What is the absolute potential at the squares center
The displacement of a particle moving under uniform acceleration is some function of elapsed time and acceleration. Suppose we write this displacement as: s=ka^mt^n where k is the dimensionless constant.
An inductor (L = 400 mH), a capacitor (C = 4.43 µF), and a resistor (R = 500 ?) are connected in series. Calculate the required maximum voltage
A block of mass 2.0 kg is pushed against a vertical wall by a horizontal push (P) of 50.0 N. The block does NOT move. Assuming that the coefficient of the static friction, k, is equal to 0.60. Find the force AND the direction of the friction.
A small container of water is placed on a carousel inside a microwave oven, at a radius of 14.0 cm from the center. What angle does the water surface make with the horizontal
q1. far in space where gravity is negligible a 450 kg rocket travelling at 77 ms fires its engines. the thrust force as
A hard-boiled egg of mass 53.0g moves on the end of a spring with force constant 25.6 N/m. Calculate the magnitude of damping constant
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.41 cm. If the spring constant is 264 N/m, Determine the maximum speed of the mass
An electric field E with an average magnitude of about 150 N/C points downward in the atmosphere near Earth's surface. What charge (both sign and magnitude) must be used
The output from a one curie Co60 source is 1.25 R/hr at one meter. What is the radiation intensity at three meters from a 4 Curie source
A string 2.0 long with a mass of 2.6 is stretched between two fixed points with a tension of 85. Find the frequency of the fundamental on this string
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