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A 64.0kg box hangs from a rope. What is the tension in the rope if:
A. The box is at rest? Express your answer with the appropriate units.
B. The box moves up a steady 5.40m/s ? Express your answer with the appropriate units.
C. The box has vy = 4.50m/s and is speeding up at 5.30m/s2 ? The y axis points upward. Express your answer with the appropriate units.
D. The box has vy = 4.50m/s and is slowing down at 5.30m/s2 ? Express your answer with the appropriate units.
In Fig. 29-56, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 16.5 cm. Each wire carries 8.00 A, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and..
Under certain conditions, the human body cans safely withstand an acceleration of 8 gram. Find what net force would have to act on someone with mass of 60 kilogram to cause this acceleration
Derive a formula kg the electric field vector for points along the positive y axis for y>a in terns of y a and q - Does the electric field (generally) point in the direction of the flat plate or the hemisphere?
in a poll of 1084 adults it was found that 22 smoked cigarettes in the past week. use 0.05 nificance level to test
A man exerts a 328 N force to move a box across a 3.55-m patch of ice. How much work does he do on the box.
5 kg of water at 60 degrees are put in contact with 1 kg of ice at 0 degrees and are thermally isolated from everything else. What is the change in entropy of the universe while the ice melts
what the electrostatic force acts on the proton.
The starship Enterprise speeds by you at a speed of 0.960c. It is measure in your frame to be 100 m long. What will be it's length at rest
Earth's atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space. What would be the electric current in amperes
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
a physical pendulum is constructed from a uniform thin rod of length l suspended from one end. the center of gravity
Dorothy is up on her 14.0m by 18.0m roof enjoying the view of Kansas. Suddenly, a strong wind blows down her ladder, leaving her stranded. Calculate the force on the roof
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