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At one instant, force = 5.40 N acts on a 0.399 kg object that has position vector = (1.81 -1.81) m and velocity vector = (-5.91 + 5.91) m/s. About the origin and in unit-vector notation, what are
(a) the object's angular momentum and
(b) the torque acting on the object?
what is the electric potential energy of this particle. what is its speed just before it strikes the positive plate.
A tire 0.650 m in radius rotates at a constant rate of 150 rev/min. What is the acceleration of the stone
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 307 K is heated at constant volume to 614 K, What is the efficiency of the cycle
As a engineer, you are designing a heat pump that is capable of delivering heat at the rate of 22 kW to a house. The house is located where, in January, the average temperature is 10°C.
A proton and an antiproton, both at rest with respect to one another, How much energy is produced in this annihilation
A diving bell has a weight of 100000 N when measured on shore. What is the buoyant force, FB, on the diving bell
Two plane mirrors facing each other are 10 m apart. A woman stands 3 m from one of the mirrors and looks at the mirror and sees two distinct images. How far are these images from the woman.
What is change in electrical potential energy of electron
a straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder, What is the density of a 220 g rock
A 2200kg sport utility vehicle travelling at 96 km/h can be stopped in 0.20 s if it hits a concrete wall. Suppose a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash a..
A box slides down a 40° ramp with an acceleration of 1.260 m/s2. Find out the coefficient of kinetic friction between box and ramp.
what would be the closest distance the bead would be from the point charge? (HINT for B: what would be the speed of the bead at this point? use energy conservation)
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