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A small motor is mounted on the axis of a space probe with its rotor (the rotating part of the motor) parallel to the axis of the probe. The moment of inertia of the probe is 5940 times that of the rotor. Initially, the probe and rotor are at rest. The motor is turned on and after some period of time, the probe is seen to have rotated by positive 32.6 degrees. Through how many revolutions has the rotor turned?
A dam holds back water. In the dam is a turbine that produces power with an efficiency of 0.73. what is the velocity of the water leaving the turbine
If the density and atomic mass of copper are respectively 8.80 103 kg/m3 and 63.5 kg/kmol, Determine the drift speed of the electrons in a 10 gauge copper wire (2.588 mm in diameter) carrying a 19.5 A current
An 39-turn circular coil of radius 22.1 cm carries a current of 3.37 A. What is the strength of the magnetic field
Three charges are at the corners of an isosceles triangle, Calculate the amount of work required to assemble this system of charges, assuming they are brought in from infinity
In February 2004, scientists at Purdue University used a highly sensitive technique to measure the mass of a vaccinia virus (the kind used in smallpox vaccine). What is the mass of the virus in femtograms
A traveler first drives 18.8 km east, then 31.8 km southeast, and finally 11.1 km south. Find the traveler's total displacement
A diffraction grating 23.0 mm wide has 5780 rulings. Find the angle at which the first intensity maxima occurs if the incident radiation has a wavelength of 585.0 nm
A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 137 V, What are the two elements
The crankshaft in a race car goes from rest to 3060rpm in 2.1s. What is the crankshaft's angular acceleration
An ideal gas at 20 ?C consists of 2.2×1022 atoms. 5.9J of thermal energy are removed from the gas. What is the new temperature in ?C
a small ball bearing is illuminated with blue light from an argon ion laser (4880 A.) What is the diameter of the ball bearing
a shower head has 20 circulaar openings, each with radiius 1.0 mm. what is its speed as it exits the shower head openings
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