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Two submarines are on a secret mission and need to arrive at a location in the middle of the Atlantic Ocean at the same time. They start out at the same time from positions equally distant from the redezvous point. They travel at different velocities but both go in a straight line. The first submarine travels at an average velocity of 20 km/hr for the first 500 km, 40 km/hr fro the next 500 km, 30 km/hr for the next 500 hm and 50 km/hr for the final 500 km. The second submarine is required to travel at a constant velocity, so the captain needs to determine the magnitude of that velocity. Draw a picture of the problem.
one container is filled with helium gas and another with argon gas. Both containers are at the same temperature. Which molecules have the higher Rms speed
A 6-kg stone is tied to a 0.79-m long string and swung around a circle at a constant angular velocity of 19 rad/s
a cylinder piece of metal .085m tall with a diameter of 3.90 cm has a specific gravity equal to 5.0. What is the mass of the cylinder in units of grams
A 59kg woman trips while walking down the street. She stumbles forward and falls onto her outstretched right hand. At the instant her hand contacts the ground her whole body is moving downward at a velocity of 9m/s and has a downward acceleration ..
No photoelectrons are emitted from a certain metallic surface when the momentum of the photons striking the surface is smaller than p0= 1.6x10^-27 kg m/
Suppose current is flowing in a wire from right to left. Which way do the electrons in the wire move? If three identical bulbs are connected in series across a 12V battery, the voltage across each bulb will be?
A 1.5-m-diameter vat of liquid is 2.3m deep. The pressure at the bottom of the vat is 1.3atm What is the mass of the liquid in the vat
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.650m from the axis of rotation of the stool. Compute the kinetic energy of the system after the dumbbells are pulled in
A 5.00g bullet is fired horizontally into a 1.30kgwooden block resting on a horizontal surface. What was the initial speed of the bullet
Cylindrical surfaces rho=1,2,3 cm have uniform surface charge densities of 20, -8, and 5 nC/m^2 respectively. The material between the first two surfaces is mica (dielectric constant = 5.4). The material between the remaining surfaces is free space. ..
A slit of width 0.26mm is illuminated with monochromatic light of wavelength 540nm , and a diffraction pattern is formed on a screen 1.5mfrom the slit. What is the width of the central maximum
Dynamics of Toboggan and Block on Ice, A 4.0 kg toboggan rests on a frictionless icy surface, and a 2.0 kg block rests on top of the toboggan. The coefficient of static friction µs between the block and the surface of the toboggan is 0.58
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