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A farm tractor tows a 4830 kg trailer up a 15.5° incline at a steady speed of 2.0 m/s. What force does the tractor exert on the trailer?
Suppose it was launched form a launch pad in a space vacuum. Would it work? Illustrate what changes would we observe? Explain
A 79kg person holds out his arms so that his hands are 1.6m apart. Normally, a person's hand makes up about 1% of his or her body weight. For round numbers, we shall assume that all the weight of each hand is due to the calcium in the bones.
A spacecraft is traveling with a velocity of vox = 5675 m/salong the +x direction. Two engines are turned on for a time of 847 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 1.25 m/s2,while the other gives it an acc..
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
What is current temperature and peak wavelength What is the proper description of their situation
Suppose you do 457 J of work on 1.18 moles of ideal gas in a perfectly insulated container. By how much does the internal energy of this gas change.
A block with mass m = 15kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4234N/m after being compressed the distance x1 = 0.536m from the spring's unstretched length. The floor is frictionless except for a roug..
Prism of refractive index 1.53 is placed in water of refractive index 1.33. If the angle of the prism is 60. Calculate the angle of minimum deviation in water
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
An electron is inside a solenoid, 28 cm from the solenoid axis. At what rate is the solenoid's magnetic field changing
A sanding disk with rotational inertia 2.4 10-3 kg•m2 is attached to an electric drill whose motor delivers a torque of 8 N•m about the central axis of the disk. What are the following values about the central axis at the instant the torque has been ..
A 13 turn circular loop of wire has a diameter of 0.66m. The plane of the circular loop creates an angle of 63 to the Earth's magnetic field. In 0.15s the coil is flipped at a location where the magnitude of the Earth's magnetic field is 34 μT.
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