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An object having a net charge of 32.2 uC is placed in a uniform electric field of 740 N/C directed vertically upward, i.e. in the direction opposite gravity. What is the mass, in grams, of this object if it "floats" in the field? (Suppose g = 9.80 m/s2.)
A 5 x 10^3 Newton weight is held suspended in equilibrium by two cables. Cable one applies a horizontal force to the right of the object and has a tension, T1. Find what is the tension in first cable
The number of protons in the known universe is about 10^80, and the radius of a proton is about 10^-15m. Estimate the volume of a sphere containing all of these protons if they were placed in contact with each other
A rotating wheel needs 8.00 s to rotate 29.0 revolutions. Its angular velocity at the end of the 8.00 s interval is 100.0 rad/s. What is the constant angular acceleration of the wheel?
A)Determine the magnitude and direction of the electric field at a point 7.8 meters from this charge B) How far from this charge does the electric field have a magnitude of 2 N/C
In a game of basketball, a forward makes a bounce pass to the center. What horizontal distance does the ball cover before bouncing
an insulated container is filled with a mix of 400 g of water at 20 C and 60 g of ice at 0 C. assuming negligible heat is exchanged with the container, what is the temperature of the mixture when it reaches thermal equilibrium.
An inductor with an inductance of 3.00H and a resistance of 7.10? is connected to the terminals of a battery with an emf of 6.10V, Find the final steady-state current
Two girls are sitting on the same side of a see-saw. One girl is 28 kg and sitting 2.4 m away from the middle. The other girl is 35 kg and 2.6 m away from the middle. Their dad can balance them out if he sits 2.0 m away from the middle on the other s..
Assuming the can to be a cylinder with a height of 15cm and a diameter of 6.4cm , find the net inward force exerted on the vertical sides of the can due to atmospheric pressure
The heating element of a clothes dryer has a resistance of 11 ? and is connected across a 240-V electrical outlet. What is the current in the heating element
A 20 000 N truck is acted upon by the force that decreases its speed from 10.00 m/s to 5.0 m/s in 5.0 sec. What is the magnitude of force.
Consider a balloon containing hydrogenmolecules at room temperature (20°C) and atmospheric pressure. what is the number of molecules in the balloon
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