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Rico slides a 60-kilogram crate up an inclined ramp 2.0-m long onto a platform 1.0 m above floor level. A 400-N force, parallel to the ramp, is required to slide the crate up the ramp at a constant speed.
1. How much work does Rico do in sliding the crate up the ramp?
2. How much work would be done if Rico simply lifted the crate straight up from the floor to the platform?
An RL series circuit has R = 72.0? and L = 2.20mH . The series combination is connected across a 155V (rms), 58Hz power supply. Find the impedance of the RL combination
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in the electron gun pictured a potential difference of 12.0 kv is found to bring electrons from rest at the cathode to
Calculate the electric flux through the circle when its face is perpendicular to the field lines and then when at 45 degrees to the field lines
An astronaut travels at a speed of 0.93c from the Earth to a distant star that is 4.5e+17 m away. how old is she when she arrives at the star
What is the total magnitude of the magnetic flux by the coil before it is rotated.
A person doing a chin-up weighs 655 N exclusive of the arms. During first 15 cm of the lift, each arm exerts an upward force of 355N on the torso. If the upward movement starts from rest, what is the person's velocity at this point.
A closed gas system initially has volume and temperature of 4360mL and 646.0C with the pressure unknown. what was the initial pressure in torr
a 49N brick is placed in 1m^3 of oil. the volume of the oil raises to 1.025m^3. What are the forces acting on the brick when at rest on the scale at the bottom of the pool? Include their direction
A gunman standing on a sloping ground fires up the slope. The initial speed of the bullet is v0= 390 m/s. Find the maximum rangeof the bullet along the slope
A 1200 kg car carrying four 84 kg people travels over a rough washboard dirt road with corrugations 4m apart which causes the car to bounce on its spring suspension.
a uniform stick 1.5 meters long With a massive 220 kg is pivoted at its center a 3.9 kg bullet is shot through the stick midway between the pivot, What is the angular speed of the spinning stick
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