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A building's elevator initially starts on the ground floor. It moves 21.6 m upwards to the sixth floor. It then goes down 7.20 m to the fourth floor. Finally, it goes up another 18.0 m to the ninth floor. The whole trip takes 134 seconds to complete. Assume up is the positive direction.
a) What distance did the elevator travel?
b) What was its total displacement?
c) What is the average speed?
d) What is the average velocity?
A block of mass m =2.00kg is released from rest at h=0.300 m from the surface of a table at the top of a theta=50.0 degree incline as shown below. How far from the table will the block hit the floor
question when an electroscope is charged its two leaves repel each other and remain at an angle. what balances the
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Positively charged aluminum ion, Al3+, has a mass of 4:50 1026 kg. After being accelerated through a potential dierence of 650 V, Calculate the radius of the path of the ion in the eld
During the current year it reported net income of $875,000. It had cash provided by operating activities of $734,000, paid cash dividends of $70,000, and had capital expenditures of $280,000. Calculate the company's free cash flow.
The masses are Q=0.400 kg, R=0.700 kg, and S=0.800 kg. Calculate the moment of inertia (of the 3 masses) with respect to an axis perpendicular to the xy plane and passing through x=0 and y=-2. [Since the masses are of small size, you can neglect t..
Two particles each have a mass of 7.1 x 10-4 kg. One has a charge of +6.7 x 10-6 C, and the other has a charge of -6.7 x 10-6 C. How fast is each particle moving when the separation between them is one-half its initial value
occasionally an asteroid is broken up into smaller pieces or fragments. these fragments hurl through space and some of
a person exerts a force of 28n on the end of a door 84cm wide. what is the magnitude of the torque if the force is
a convert 1.05 bar to torr using the relationships 1 bar 105nbsppa and 1 atm 1.013times105nbsppa 760 torr. express
A lens system consists of two lenses18.0 cm apart. The first lens is convex (converging) and has a focal length of 9.90 cm. An object is placed 3.96 cm in front of the first lens and produces an image 9.90 cm behind the second lens. What is the focal..
End A of the 8-kg uniform rod AB is attached to a collar that can slide without friction on a vertical rod. End B of the rod is attached to a vertical cable BC.
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