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Movers must push a piano onto a truck, the bed of which is a height 1.76 m above the ground. To do this, they will use a frictionless ramp. If the piano has a mass of 1249.0 kg and the movers push it up the slope at a constant velocity, how much work do they need to do on it to move it into the bed? Please provide your answer in kilo-joules (KJ), as the amount of work should be quite large.
Astronaut Ann wishes to travel from one side of her spaceship to the other side so she pushes herself away from a wall, What is Ann's speed relative to Bob as she drifts across the spacehip
A CD-RM starts from the rest and undergoes uniform angular acceleration until it reaches 26,000 rpm in 0.25s. Though what angle does it rotate during this time
If the tension in a guitar string is increased by 20%, by what percentage does the wave speed increase
The output voltage of an AC generator is given by ?v = (120 V) sin (50?t). The generator is connected across a 25.0-? resistor. Find the power delivered to the resistor
As an object is heated to a very high temperature and becomes self-luminous, What causes the color shift
A 1 m stick is used as a simple pendulum with a 2 kg weight on the end. What is its period of oscillation
three charges q1 q2 and q3 are located at the corners of an equilateral triangle with side length of 1.11 m. find the
A 312 eV electron is moving in the positive x direction. It encounters a magnetic field of 1.80 mT out of the paper. What is the angular velocity? What is the velocity of the electron? What is the radius of the circle or rotation?
a solenoid that is 85.2 cm long has a radius of 1.67 cm and a winding of 1110 turns it carries a current of 4.46 a.
A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank? What would the velocity of the water be if the tank was opened at the bottom? A Two balloons of identical volume (radius 11.5 m) are filled with ..
A -50 micro C charge is located at (+26 cm, 0) on the + x axis and a +50 micro C charge is located at (-26cm, 0) on the -x axis. Calculate the net electric field and the total electric potential
Unpolarized light passes through two Polaroid sheets. What fraction of the original light is absorbed by the analyzer
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