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the astronaut whose heart rate on earth is 65 per minute increase his velocity to v=.95c. what is now his heart rate as measured by an earth observer?
A paper airplane is given a push so that it could fly 7m/s 35° North of East, How fast could it go and in what direction would it travel
An ammeter with an internal resistance of 53.0 ? measures a current of 5.75 mA in a circuit containing a battery and a total resistance of 1290 ?. Determine the actual value of the current
An incident X-ray photon of wavelength 0.2800 nm is scattered from an electron that is initially at rest. find the momentum gained by the electron
An RLC series circuit has R=1.35 kOhm, L=225 mH, and C=2.50 uF (micro farads) and is connected across a 60 Hz power supply. find the reactances of the capacitor and inductor
how to Assume the protons started from very far away. Need X and Y componet.
Cart A, with a mass of 2 kg, travels on a horizontal air-track at 3 m/s and hits cart B, which has a mass of 4 kg and is initially at rest. what is the speed of the center of mass of the two-cart system
An empty rubber balloon has a mass of 0.0120kg. The balloon is filled with helium at 0oC, 1atm pressure, and a density of 0.179kg/m3, What is the magnitude of the buoyant force acting on the balloon
A truck of mass 10,712 kg moving at a speed of 66.4 mph has lost its brakes. How far along the incline does the truck travel before it stops
A wheel has a maximum rate of rotation of 150 revolutions per minute. Starting from rest, Calculate the magnitude of its angular acceleration
A weather balloon contains 12.0 m3 of hydrogen gas when the balloon is released from a location at which the temperature is 22.0°C, what is the new volume of the balloon
A hydrogen atom in the n= 2 state absorbs a photon with wavelength 486nm. Find the change in the orbiting electron's kinetic energy
A 96 kg astronaut and a 1100 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.25 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact ..
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