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Two people are pulling a boat through the water as in the figure below. Each exerts a force of 600 N directed at a ? = 45.0° angle relative to the forward motion of the boat. If the boat moves with constant velocity, find the resistive force exerted by the water on the boat.
Estimate the speed of the water just before striking the turbine blades (overlook air resistance).
A 63 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale while the elevator is descending at a constant speed of 10.0 m/s.
An unknown nucleus has twice the volume of a nucleus with 83 nucleons. What is the atomic mass number of the unknown nucleus
A uranium-fuelled research reactor has a cubic shape with sides of length 1.0 m. estimate the power out of the reactor in units of watts
Newton's universal constant of gravitation is G = 6.67 × 10-11 meters cubed (m3) per kilogram per second per second. The Sun's mass is M = 1.9891 x 10^30 kilograms. Earth's orbital period is P = 365.256366 days. Obtain the average radius of Earth's o..
A circuit consists of two 475-k%u03A9 resistors in series with an ideal 12.0-V battery. Calculate the potential drop across one of the resistors
Find the magnitude of the acceleration for an electron in a uniform electric field with a magnitude of 122 N/C.
For the following questions, express your answers in terms of q. (a) How much charge ends up on sphere C? (b) What is the total charge on the three spheres before they are allowed to touch each other? (c) What is the total charge on the three sphe..
As a 1.00 mol sample of a monatomic ideal gas expands adiabatically, the work done on it is -2500 J. Calculate the final pressure and temperature
A 53.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 130 kg football players at a height of 1.30m. what is the diameter of the football players' piston
a child swings a mass on a string in a horizontal circle 1.2 meter off the ground. The string has a length of 0.6 meters, how far will the mass travel before it lands
Two blocks with masses M_1 and M_2 hang one under the other. For this problem, take the positive direction to be upward, find the tension in the lower rope
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