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A rescue helicopter lifts a 85.3-kg person straight up by means of a cable. The person has an upward acceleration of 0.697 m/s2 and is lifted from rest through a distance of 13.8 m.
(a) What is the tension in the cable? How much work is done by
(b) the tension in the cable and
(c) the person's weight?
(d) Use the work-energy theorem and find the final speed of the person.
The liquid-drop model of the atomic nucleus suggests high-energy oscillations of certain nuclei can split the nucleus into two unequal fragments plus a few neutrons, Calculate the electric potential energy (in electron volts) of two spherical fragm..
Put a 10 V battery with a 10 ? internal resistance in series with a switch: hook this up to a 100 ? resistor in parallel with a 2 H inductor. Find the initial voltage across the inductor when the switch is opened
A patient is going to be prescribed bifocals which will be 3.20 cm from the eye, Without the bifocals, what is the patient's near point
A 65-kg woman cheats on her diet and eats a 612-Calorie (612 kcal) jelly doughnut for breakfast. If the human body is only 21% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakf..
What are the speed and period of a person on a carousel if the person has a centripetal acceleration with a magnitude of 1.0 m/s2 when she is standing 3.0 m from the axis
Unpolarized light of intensity I_0 is incident on a stack of 7 polarizing filters, each with its axis rotated 15 (degrees) cw with respect to the previous filter. What light intensity emerges from the last filter
What is the size of the force on the wireA horizontal wire of length 3.0 m carries a current of 6.0 A and is oriented so that the current direction is 50° S of W. What is the size of the force on the wire
A rifle is aimed horizontally at a target 51m away. The bullet hits the target 2.0cm below the aim point. What was the bullet's flight time
An electromagnetic wave with frequency 56.0 Hz travels in an insulating magnetic material that has dielectric constant 3.72, What is the speed of propagation of the wave
a ball is launched with a velocity of magnitude 7.00 m/s, at an angle of 40.0° to the horizontal. find the angle of its displacement from the launch point
A 36 µF air-?lled capacitor is charged to apotential di?erence of 1099 V. What is the energy stored in it
What is the angular acceleration
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