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Q. How high a tree would a 80.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount?
Q. A proton accelerates from rest in a uniform electric field of 660 N/C. at one later moment, its speed is 1.60 Mm/s (nonrelativistic because v is much less than the speed of light).
a. find the acceleration of the proton
b. over what time interval does the proton reach this speed?
c. how far does it move in this time interval?
d. what is its kinetic energy at the end of this interval?
A yo-yo has a rotational inertia of 910 g·cm2 and a mass of 120 g. Its axle radius is 3.8 mm and its string is 100 cm long. The yo-yo is thrown so that its its initial speed down the string is 1.1 m/s.
A resistor with an unknown resistance is connected in parallel to a 12 ohm resistor. while both resistors are connected to an emf source of 12 V, current across the unknow resistor is measured with an ammeter to be 3.0 A. What is the resistance of..
define the speed of the particle when the string is parallel to the electric field.
A solid, rectangular iron bar measures .40cm by 1.0cm by 30cm. Find the resistance between each of the three pairs of opposing faces, assume the faces in question are quipotentials.
Find the magnitude of total displacement of the object
They then turn together around the spindle with their centers superposed. What is an angular frequency in of the combination.
At one instant a bicyclist is 35.0m due east of a park's flagpole, going due south with a speed of 20 m/s. Then, 19 s later, the cyclist is 60.0 m due north of the flagpole, going due east with the speed of 11 m/s. For the cyclist in this 19s inte..
Find density of the object
A 21g particle is moving to the left at 29 m/s. How much work must be done on the particle to cause it to move to the right at 41 m/s.
A 4.7 e2 kg hot-air balloon takes off from rest at surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 multiplied by 104J of work on the balloon in the process. At what height above the surface of the ea..
What is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking .
Find out the tension of the right and left wire
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