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Ten boxes, each 21.0 cm high and weighing 235 N, initially are all side by side on the floor. The boxes are lifted and placed in a vertical stack 2.10 m high in a time interval of 6.50 s. Compute the power necessary to stack the boxes.
One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. Illustrate what is the magnitude of the third force?
Two gliders are tied together by a string after they are connected together by a compressed spring on an airtrack. find the mass of Glider B
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. what is the current in the solution
Find the pressure difference on an airplane wing if air flows over the upper surface with a speed of 114 m/s , and along the bottom surface with a speed of 105m/s
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
A 65-? loudspeaker, a 8.0-? loudspeaker, and a 2.1-? loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers
How many wavelengths are contained in the light wave passing back and forth through the oil?
A 500g particle has velocity vx = -5.0m/s at t = -2s. Force Fx = (4-t^2)N is exerted on the particle between t = -2s and t = 2s. What is the particle's velocity at t = 2s
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
An aluminum plate has a length of 0.12 m and a width of 0.10 m at 25 °C. what is the change in the area of the plate as a result of the increase in temperature
Fairgoers ride a Ferris wheel with a radius of 4.35m, the bottom of which is 1.75m from the ground. The wheel completes one revolution every 30s. A passenger drops his keys when he is three quarters of the way up and at the 10 o'clock position. Wh..
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