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You are moving into an apartment and take the elevator to the6th floor. Suppose your weight is 770 N and that of yourbelongings is 1030 N. (a) Determine the work doneby the elevator in lifting you and your belongings up to the 6thfloor (15.2 m) at a constant velocity. (b) Howmuch work does the elevator do on you alone (without belongings) onthe downward trip, which is also made at a constant velocity?
The angular momentum of a flywheel having arotational inertia of 0.240 kg m2 aboutits axis decreases from 3.70 to 1.30 kg m2/s in2.10 s. What is the average power of the flywheel
three objects, with m1 = 10.2 kg and m2 = 23.5. They are connected by strings that pass over massless and frictionless pulleys. What is the acceleration of the three objects
The magnitude of the electric field due to a disk of radius 3 m and a uniformly distributed positive charge is measured to be 150 N/C at a location in the air 6 mm from the center of the disk, what is the magnitude of the electric field due to the ..
Coasting along at 7.47 m/s, a 73.0 kg bicyclist on a 7.06 kgbicycle encounters a small hill. how much work was done on the bicyclist and her bike
two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 times
A projectile is shot from the ground at an angle of 55 degrees with respect to the horizontal,find the horizontal component and the vertical component of initial velocity
Illustrate what is the intensity of the beam transmitted through the three sheets when 1 = 19.0°, 2 = 51.0° and 3 = 100.0° ?
A long slender bar is made from an unknown material. The length of the bar is 0.752 m, its cross-sectional area is 1.48 × 10-4 m2, Find the Young's modulus of the unknown material
Consider a heat exchanger. Air is used to heat the liquid water. The entering air temperature is 350deg C and entering water temperature is 20degC. The water is heated to saturated vapor at 1.5MPa. The mass flow rate of air and water are 30kg/min ..
A typical large orb spider has a mass of 0.50 g. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
What is the energy of a single photon of red light with a wavelength of 633 nm?
A sled starts from rest at the top of a hill and slides down with a constant acceleration. What is the speed of the sled when it passes the 14.4-m point
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