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An elevator is able to raise 1,000 kilogram to a height of 20 meter in10 second.
a) Calculate how much work does the elevator do?
b) Calculate the elevator output power?
Two narrow slits are illuminated by a laser with a wavelength of 537 nm. The interference pattern on a screen located x = 5.50 m away shows that the second-order bright fringe is located y = 6.00 cm away from the central bright fringe. Calculate the ..
A person pushes a crate rightward along a rough horizontal surface by pushing downward at 30 degrees below the horizontal with a force of magnitude F = 50.0 (N). What is the horizontal acceleration ax of the crate
A plate carries a charge of -3.7 C, while a rod carries a charge of +1.9 C. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
What is the strength of the electric field.
An orchestra is tuning its instruments using a tone at a frequency of 440 Hz. A man comes zipping by on a very quiet, electric scooter at a speed of 28 m/s. What tone does the man hear as he approaches the orchestra
In the system shown in figure. A horizontal force Fx with a magnitude of 100N acts on object of mass m2=6.15kg. The horizontal force is frictionless. ( Picture- a flat table with mass m2 connected with a string to a pulley and mass 1 hangs off the ta..
An individual is running around a turn with an 11 m radius at 3.75 m/s. What is the runner's centripetal acceleration
a what is the angular momentum of a 3.2 kg uniform cylindrical grinding wheel of radius 18 cm when rotating at 1500
Dan is moving a duffel bag across a carpeted floor that weighs as much as he does (60kg). He pulls with a force of 200N to get the bag to start moving. What is the coefficient of static friction between the duffel bag and the carpet?
A magnetic field is oriented at an angle of 41degrees to the normal of a rectangular area 4.5cm by 6.3cm. If the magnetic flux through this surface has a magnitude of 4.9×10^?5T*m^2 , what is the strength of the magnetic field?
What is the block's distance from equilibrium as the speed are 36 cm/s? What is block's position at t=1.0 s.
q1. a 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. when it hits the
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