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Compute the diameter of a 2.19 centimeter long tungsten filament in a light bulb if its resistance is 0.751 ohm. (The resistivity of tungsten is 5.60 x 10-8 ohm•m).
It is proposed that future space stations create an artificial gravity by rotating. What rotation period will provide "normal" gravity
An object 25 cm from a convex mirror is observed to produce an image 13.6 cm behind the mirror. What is the focal length of the mirror
A hollow spherical shell with mass 1.80kg rolls without slipping down a slope that makes an angle of 40.0? with the horizontal. Find the magnitude of the frictional force acting on the spherical shell
A physics professor demonstrates the Doppler effect by tying a 610 Hz sound generator to a 0.9 m long rope, What are the highest and lowest frequencies heard by a student
A subway train rounds an unbanked curve at 70 km/h. Find what is the radius of the turn
A 115 V electric iron draws 5.57 A of current. How much heat is developed per hour, What is the temperature of the bath
two gliders are moving on a horizontal frictionless air track. glider 1 has mass m1 194.3 g and is moving to the right
If a certain mass of water falls a distance of 854 m and all the energy is effective in heating the water, what will be the temperature rise of the water
A 0.66kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15m. Determine the total energy of the system
in coming to a stopa car leaves a skid marks 92m long on th highway. assuming a deceleration of 7.0 ms squared estimate
A farm tractor tows a 4830 kg trailer up a 15.5° incline at a steady speed of 2.0 m/s. What force does the tractor exert on the trailer
a nasa mission to update the electronics on a circular orbiting space station has required the work of four astronauts.
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