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A fire helicopter carries a 520-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, the cable makes an angle of 36.0° with respect to the vertical. Determine the force exerted by air resistance on the bucket.
Samantha pushes a 50.0 N crate up a ramp 25.0 m in length and inclined at 10.0 degrees with the horizontal. What potential energy does the crate experience
Two charges, -3.5?C and -4.4?C , are located at (-0.70m , 0) and (0.70m , 0), respectively. find the location of the point where the electric field is zero
Calculate the self inductance of a solenoid that has N turns, a length L, a radius R, and is carrying a time varying current I(t)
Why three points? Would two have been enough? Describe what changes would occur, if any, in the electric field pattern and in the equipotential curve you measured if the magnitudes of your three charges were increased, all by the same factor.
A constant-pressure insulated piston-cylinder device contains 1.7 kg of saturated liquid-vapor mixture of water at 150 kPa with an initial quality of 0.2. Calculate the change in energy of the contents
You stand on a frictionless platform that is rotating at anangular speed of 1.2 rev/s. Your arms are outstretched, and you hold a heavyweight in each hand. What is the resulting angular speed of the platform
What is the Total Energy of an object that has mass of 6.54 kg, with a velocity of 6.27 m/s, which is also experiencing an acceleration of 9.99 m/s2 at a height of 1.53 m
There are two pith balls that are suspended from a pendulum and repel each other, calculate the tension of the string and the mass of the balls
A car starts from rest and travels for 6.0 s with a uniform acceleration of +2.9 m/s2. How far has it gone
A tennis ball of mass m=0.057kg and speed v=24 m/s strikes a wall at a 45 degrees angle and rebounds with the same speed at 45 degrees. What is the direction of the impulse given to the ball
A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain
A light beam is incident on a piece of water (n = 1.333) at the Brewster's angle. Find the value of Brewster's angle
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