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A 90 kg astronaut completes repairs on a 470 kg communications satellite, and then pushes off from the satellite. When no longer in physical contact, the astronaut is moving at 42 cm/s relative to the satellite. What change in velocity has the astronaut given the satellite?
A positive charge Q = 6400.00 C is uniformly distributed over the volume of a sphere of radius R =1.50 m. Assume a spherical cavity of radius R/2 is cut out of the solid sphere, the center of the cavity being a distance R/2 from the center of the ori..
The number of radioactive nuclei present at the start of an experiment is 4.701015. The number present 22 days later is 8.441014. What is the half-life (in days) of the nuclei?
If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72 , what is the magnitude of the frictional torque
q1. the coefficient of static friction between the block and tables surface is ampmu s 13. the mass of the block that
A Carnot cycle heat engine uses steam as the working fluid and has a thermal efficiency of 20%. calculate the work per kilogram of steam
A semi truck is stopped across a road. As a driver approaches at 20 m/s he sounds the horn of his car (f=350 Hz). find the frequency of the horn heard by the truck driver
A nylon guitar string has a linear density of 5.56 g/m and is under a tension of 161 N. The fixed supports are D = 74.4 cm apart. The string is oscillating in the standing wave pattern shown in the figure. Calculate the (a) speed, (b) wavelength, and..
While a roofer is working on a roof that slants at 42.0 degrees above the horizontal, If it starts 4.35 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on ..
What friction torque is required to reduce angular speed
A boeing KC-135A airplane has a wingspan of 39.9 m and flies at a constant altitude in a northerly direction with a speed of 750 km/h. If the vertical component of the Earth's magnetic field is 5.2*10^-6 T, and its horizontal component is 1.5*10^-6 T..
a glass windowpane in a home is 0.62 cm thick and has dimensions of 0.8 m 1.9 m. on a certain day the indoor
You and a friend each drive 67 km to the same destination. You travel at 88.9 km/h and your friend at 98.8 km/h. How long will your friend wait for you at the end of the trip
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