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Q1. Regarding the Earth and a cloud layer 750m above the Earth as the "plates" of a capacitor, calculate the capacitance. Suppose cloud layer has an area of 1 km2 and that the air between cloud and ground is pure and dry.
Q2. The plunger of the hydraulic lift in a service station has a diameter of 0.0254 m. it is operated by a compressed air from a tank in which the pressure is 9.315x10^5 N/m^2. the plunger of the rack on which the car rests together weigh 1,336.33 N. what is the heaviest weight of the nearest car that can be lifted?
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
A parallel-plate capacitor has a plate area of 1cm^1 and a plate separation of 2.5 mm. To obtain an electric field of 1.0*10^6N/m between the plates, the magnitude of the charge on each plate should be.
A good baseball pitcher can throw a baseball toward home plate at 91 miles per hour with a spin of 1789 revolutions per minute. How many revolutions does baseball make on its way to home plate? For simplicity, assume that the 60.0 ft path is a straig..
Find a circuit to change the relationship between waveform and zero-volt axis & calculating the period of waveform.
What should the charge (sign and magnitude) of a particle of mass 1.21 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
What tension is necessary to tune string properly
A hotel elevator ascends 140 m with a maximum speed of 5.80 m/s. Its acceleration and deceleration both have a magnitude of 1.50 m/s2.
The position of an air-track cart that is oscillating on a spring is given by the equation x = 12.4 cos[(6.35 s-1)t] . At what value of t after t= 0.00s in the cart first located at x = 8.47 cm ?
What is the distance between deer a and c
Two ants race across a table 62 cm long. One travels at 4.77 cm/s and the other at 2 cm/s. When the first one crosses the finish line, how far behind is second one. What am I trying to solve for distance, speed, or time.
A 1500 car travelling at 26 suddenly runs out of gas while approaching the valley that looks like an inverted hump. 12m at the left where the care runs out of gas and 19 m at the right were it is headed. What will be the car's speed as it coasts into..
An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
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