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Question: Now the friends decide to try a problem. A metal ball of mass 0.5 kg is dropped from a great height, so that it reaches terminal velocity before hitting the ground. Its terminal velocity is measured to be 41 m/s.
Part A: What is the radius of the ball?
Please show all work and steps to find the radius of the ball, use 1.2 kg/m3 for the density of air, and 0.5 for D.
The earth's magnetic field, with a magnetic dipole moment of 8.5×1022A•m2, is generated by currents within the molten iron of the earth's outer core. What is the current in the current loop
A 150 kg elevator carries a 35 kg passenger. If the elevator accelerates upward at 1.2 m/s2, what is the tension in the elevator cable
A tuning fork vibrating at 511 Hzfalls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork
As you stand near a railroad track, a train passes by at a speed of 30.9 m/s while sounding its horn at a frequency of 215 Hz. What frequency do you hear as the train approaches you
You warm 1.75kg of water at a constant volume from 16.0C to 30.5C in a kettle. For the same amount of heat, how many kilograms of 16.0C air would you be able to warm to 30.5C? Make the simplifying assumption that air is 100% N2. What volume would thi..
A length of copper wire carries a current of 12 A, uniformly distributed during its cross section. The wire diameter is 2.5 mm, and its resistance per unit length is3.5 /km. Compute the energy density of the magnetic field at the surface of the wire.
The body contains many small currents caused by the motion of ions in the organs and cells. how large is the current in the heart
An athlete at the gym holds a 2.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4-kg. What is the magnitude of the torque about his muster if he holds his arm straight out to his side, parallel to the floor.
A copper wire has a 25-m ohm resistance at 20 C. When the wire is carrying a current, heat produced by the current causes the temperature of the wire to increase by 27 C. What is the change in the wire's resistance
At what frequency does a 63uF capacitor have a reactance of 63 ohm
Radio waves from a star, of wavelength 247 m, reach a radio telescope by two separate paths. One is a direct path to the receiver, which is situated on the edge of a cliff by the ocean. The second is by reflection off the water.
An automobile tire has a radius of 0.380 m, and its center moves forward with a linear speed of v = 18.0 m/s. Decide the angular speed of the wheel.(Assume that there is no slipping of the surfaces in contact during the rolling motion.)
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