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Calculate the velocity a spherical rain drop would achieve falling from 5.00 km
(a) in the absence of air drag
(b) with air drag. Take the size across of the drop to be 4 mm, the density to be , and the surface area to be .
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
Write an equation for the buoyant force on the empty barge in terms of the known data. Determine the mass of the barge in kilograms. Find the mass of the coal in terms of the given data.
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the world. At what temperature would the wire reach its elastic limit
Calculate the maximum displacement of air molecules when a 330-HZ sound wave passes whose intensity is at the threshold of pain (120dB)
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 4.30 × 105 kg
A stone is thrown upward with an initial velocity of 6 m/s. What maximum height will the stone reach
You have a 2.5m long copper wire. You want to make an N-turn current loop that generates a 1.9mT magnetic field at the center when the current is 1.6A. What will be the diameter of your coil
A wave on a string is described by D(x,t) = (1.2 cm)sin[2 pi (x/(3.9 m) + t/(0.4 s) + 1)], where x is in m and t is in s. What is the wave number
Two ice skaters, Daniel (mass 70.0 kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 13.0m/s before she collides with him.
Suppose that 0.0025 m^3 of gas in a cylinder is compressed by a piston down to 0.001 m^3 while 675 J of heat flows out of the gas. what was the change in its internal energy
A 19.7 k Ω resistor and a capacitor are connected in series and then a 12.0 V potential dissimilarity is suddenly applied across them. The potential dissimilarity across the capacitor rises to 6.62 V in1.16 µs.
The tower of doom, at glitch gardens in Denver, Colorado, lifts 15 people 50m into the air. The engineers assume the average person has a mass of 70 kg. How much rider weight does the ride lift into the air? What is the potential energy of a single, ..
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