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It takes an elevator 2.5 minutes to raise a vehicle with a weight of 3683 N from the floor to a height of 8 meters. What size (power) motor (in watts) does it take to do the job? Hint: this is a multiple step problem in which you must derive the variables needed to solve for problem in step one and then apply those values to the final solution of the problem. Watch your units.
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
A dart with a mass of 0.025 kg traveling with a speed of 13 m/s impacts a dart board and stops. What work was done by the dart board in stopping the dart
A laser emits light at power 3.00 mWand wavelength 633 nm. The laser beam is focused (narrowed) untilits diameter matches the 1266 nm diameter of a sphere placed in itspath. What is the beam intensity at the sphere's location
it moons radius is 1600 km and g on its surface is found to be 1.6 ms. find the escape velocity on the moon provided
In February 1955, a paratrooper fell 370 m from an airplane withoutbeing able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
A square loop 15 cm on a side lies in the xy plane. Its resistance is .55 ohm. A magnetic field points in the +z direction, What is the direction of the induced current in the loop
Shaving/makeup mirrors typically have one flat and one concave(magnifying) surface. You find that you can project a magnified image of a lightbulb onto the wall of your bathroom if you hold themirror 1.6 m from the bulb and 3.8 m from the wall.
A research balloon bound for the stratosphere is filled at sea level with 800 m3 of helium whose initial temperature is 285 K. What is the temperature of the helium
Biotechnology refers to the technical applications of living organisms or their functions. These applications may be used in engineering, medicine, or agriculture, to name a few. Biotechnology processes and procedures are varied and range from the do..
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an energy of -17.30 eV. What is the energy of the first photon emitted
The classical picture of the hydrogen atom has a single electron in orbit a distance 0.0529nm from the proton. Calculate the electric potential associated with the proton's electric field at this distance.
A bowling ball with a diameter of 21.9cm is rolling down a level alley surface at 12.1m/s without slipping. how far up the incline will it travel before it stops
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