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Question: Interstellar space has a magnetic field on the order of 0.1 nT. Matter in this space is mainly Hydrogen atoms (about 1 per cubic centimeter) moving with speeds of about 1 km/s. Compare the energy in the magnetic field to the Kinetic Energy of the atoms.
A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat and disrupting the flow of blood (and thus oxygen) to your brain. If that current persists for 2.90 min, how many conduction elec..
Mechanics: Center of Mass. A 60 kg woman and a 90 kg man stand 10.0 m apart on frictionless ice.
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
Find density of the object
A person ca throw a 1.00 Kg stone at a speed of 15.0 m/s. He moves his hand forward 0.75 m while doing so. How much work does the person do on the rock
An 85 kg jogger is heading due east at a speed of 1.6 m/s. A 55 kg jogger is heading 34° north of east at a speed of 3.6 m/s. compute the direction of the sum of momenta of two joggers
A spring-loaded pellet gun is designed to fire 3.40 g projectiles horizontally at a speed of 39.0 m/s. What maximum force is required to load the gun
If an electron makes a transition from the n = 6 Bohr orbit to the n = 2 orbit, determine the wavelength of the photon created in the process
In western movies, the hero sometimes detects an approaching trainby "listening" to the railroad tracks. If the tracks are made ofsteel, how many times faster does sound travel in the tracks thanin air?
You throw a 1 kg rock down a 5m-deep wishing well. It hits the water with a velocity of 7.5 m/s. How much work did air resistance do
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, For what value of q/Q>0.5 will the electrostatic force between the two parts have 1/2 of the maximum possible value
A woman with mass 53.5 kg is standing on the rim of a large disk that is rotating at 0.510 rev/s about an axis perpendicular to it through its center. Calculate the magnitude of the total angular momentum
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