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A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon when the sun is 22? above the horizon. How deep is the pool?
An aeroplane has wings with a surface area of 34 m2. The shape of the wings are such that air moving over the top of them travels 20% faster than the velocity of the air under the wing, what is the take-off speed of the plane
Four particles are held in place at the corners of a square with sides of length L. Each particle has a charge q and mass m. (a) What is the potential energy of the system of charges.
A charge of 6.53mC is placed at each corner of a square .470 m on a side. Determine the magnitude of the force on each charge. Determine the direction of the force on each charge.
If the plant produces electric energy at the rate of 1.3GW , how much exhaust heat is discharged per hour
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the similar as that of the spider's thread.
A horizontal force a of magnitude 22 N is applied to a 3.25 kg psychology book, as book slides a distance d = 0.500 m up a frictionless ramp.
A 50.0 gram chunk of ice is taken from a freezer at -20 C, What is the minimum amount of stove energy required
What would be the weight of the spherical mass at that location? Round your answer to the nearest tenth decimal place and give your answer in the form "a.bc x 10^(y)" N.
The planet Mercury has a mass that is 5.00% of that of Earth, and its gravitational acceleration is gmercury = 3.70 m/s2. a) How long does it take for a rock that is dropped from a height of 2.63 m to hit the ground on Mercury?
Block 1, of mass = 0.500 , is connected over an ideal (massless and frictionless) pulley to block 2, of mass , as shown. Assume that the blocks accelerate as shown with an acceleration of magnitude = 0.300 and that the coefficient of kinetic frict..
A person can survive a feet-first impact at the speed of about 12 m/s (27 mi/h) on concrete; 15 m/s (34 mi/h) on soil; and 34 m/s (76 mi/h) on water. Why are there different values for different surfaces.
a substance has a density of p=200kg/m3. what is the mass of the box full of substance?
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