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The density of air decreases with altitude. Consider a planet having a layer of atmosphere extending no more than 70.0 km above the surface. The atmospheric pressure at the surface of this planet is 80.0 kPa, and the average radius of this planet is 6.70×106 m. Decide the mass of air in this atmosphere. You will require to take into account the fact that g varies with altitude. The density of the planet itself is 5550 kg/m3.
a positron q e moves at 4.88 x 107 ms in a magnetic field of magnitude 0.410 t. the magnetic force on the positron has
A charged particle moves through a velocity selector at a constant speed in a straight line. The electric field of the velocityselector is 4.15*103 N/C, while the magnetic field is 0.360T.
how long must the engine burn in order to reach this speed. What will be the equilibrium temperature when a 259 block of copper at 258 is placed in a 137 aluminum calorimeter cup containing 836 of water at 16.
A wooden cylinder of length 2.0m and cross section 78cm^2 is suspended in vertical positionwith a string of length 2.5m. Find the linear density of the string
You are traveling on an airplane, The velocity of the plane with respect to the air is 190 m/s due east, What is the speed of the plane with respect to the ground
A 3.00 kg block starts from rest at the top of a 33.0° incline and slides 2.00 m down the incline in 1.60s. Discover the acceleration of the block. Find the speed of the block after it has slid 2.00 m.
The power dissipated in a series RCL circuit is 66.2 W, and the current is 0.547 A. The circuit is at resonance. Determine the voltage of the generator
A guitar string is vibrating in its fundamental mode, with nodes at each end. The length of the segment of the string that is free to vibrate is 0.388m. What is the wave speed for the transverse traveling waves on this string
A 55cm long brass rod has a diameter of 3cm. What compression force will break this rod? What tension force will break this rod
A playground merry-go-round has radius 3-{rm m} and moment of inertia 3000-{rm{ kg}} cdot {rm{m}}^2 about a vertical axle through its center, and it turns with negligible friction.
The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. find in how short a distance the train can be stopped at constant acceleration without causing the crates to slide over the f..
The coefficient of kinetic friction is 0.350. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
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