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Suppose 4.00 g of hydrogen is separatedinto electrons and protons. Suppose also the protons are placed atthe earth's North Pole and the electrons are placed at the SouthPole. What is the resulting compressional force on the Earth?
Two spherical objects with a mass of 5.26 kg each are placed at a distance of 3.95 m apart. How many electrons need to leave each object
An early .75 caliber rifle fires a 12 gram spherical ball at 800 ft/sec with a spin of 1 revolution per 114 mm. How much energy is in the rifle ball
A railroad boxcar that has " due east" momentum of 15,000 kgm/sec collides with and couples with a similar boxcar that has "due west" momentum of 20,000kgm/sec. After collision, the combination has ( ) kgm/sec total of momentum.
The temperature of the glass surface of a 30 W light bulb is 75°C when the room temperature is 10°C. Estimate the temperature of a 150 W light bulb with a glass bulb the same size. Consider only radiation, and assume that 90% of energy is emitted as ..
A 7.90×10-2-{rm kg} toy airplane is tied to the ceiling with a string. While the airplane's motor is started, it moves with a constant speed of 1.20m/s in a horizontal circle of radius 0.50m.
Imagine that we connect a 10-mH coil to a battery through a resistor, and it settles down to conducting 1.0A. How much energy is now stored in its magnetic field
The intensity of sunlight at the top of the Earth's atmosphere is about 1360W/m^2. What is the total power emitted by the Sun
A charged conducting sphere of radius 18 cm has 1012 electrons removed from its surface. What is the surface charge density of the sphere
After a spacewalk, a 2.33-kg tool is left 58.9 m from the center of gravity of a 40.1-metric ton space station, orbiting along with it. How much closer to the space station will the tool drift
In the figure below a crowbar is used to lift a weight. If a down ward force of 228 N is applied to the end of the bar, how much weight does the other end bear? The crowbar itself has negligible weight. (Let r1 = 29.0 cm and r2 = 4.70 cm.)
Calculate the linear and rotational speed of a solid sphere of radius 20.0 cm and mass 1.20 kg that is released from rest and rolls down a 30.0 degree incline that is 10.0 m long, when it reaches the bottom.
You would like to store 8.6J of energy in the magnetic field of a solenoid. What is the magnitude of the magnetic field inside the solenoid
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