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Q. Evangelista Torricelli was the first to put forward the idea that we live at the bottom of an ocean of air. (i) Given the value of the atmospheric pressure at the surface of the Earth, and the fact that there is zero pressure in the vacuum of space, determine the depth of the atmosphere, assuming that the density of air and the acceleration of gravity are constant. (2) According to this model, what is atmospheric pressure at the summit of Mt. Everest, 29,035 ft above sea level?
Find tension in the back muscle and the compressional force
It's found that string is set into oscillation only at the frequency 880 Hz and 1320 Hz as the frequency of an oscillator is varied over the range 500-1500 Hz. What is the tension in the string.
A uniform horizontal wire with a linear mass density of 0.50 g/m carries a 1.8 A current. It is placed in a constant magnetic field with a strength of 4.00 x10-3 T. The field is horizontal and perpendicular to the wire. Neglect the magnetic field ..
Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
All distant galaxies are moving away from us. Describe why this does not imply that we are at the center of universe.
A ball is thrown directly up from the ground with speed vsub0. At the same time, a second ball is dropped from rest from a height H, straight above the point where the first ball was thrown upward. There is no air resistance. A) Find out the time at ..
compute the coefficient of kinetic friction between block A and the tabletop.
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.19 is suspended within a large evacuated enclosure whose walls are at a temperature of 285.0 . What power input is needed to maintain the sphere at a temperature of 2500.0 i..
If a car traveling at 62 km/h will skid 22 m as its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock.
What is the magnitude of the net force on the student.What is the magnitude of contact force on the student by the backpack.
The length of a string is 532cm. It is held fixed at each end. The string vibrates in seven sections; i.e. string has seven antinodes, and the string vibrates at 150 Hz. What is the wavelength.
what is the mass of helium in the balloon.
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