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Q1. A charge of -1.5 × 10-9 C is at the origin and a charge of 9.1 × 10-9 C is on the x-axis at x = 3 m. At what location on x-axis is the electric field zero?
Q2. A hotel elevator ascends 170 {rm m} with a maximum speed of 5.90 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.3 {rm m/s^2}.
In order to clearly read a book 24 cm away, a farsighted girl needs an image to be 35 cm from her eyes. What focal length is necessary for lens in her eyeglasses.
What is the electric force
A person carries a long pole of mass 10kg and length 3.40 m at the angle of 60 degrees. Find the magnitude of the torque on the pole by reason of gravity.
The amplitude of the electric field of an electromagnetic wave is 197 V/m.
The speed of light in a transparent medium (such as glass) is less than the speed of light in a vacuum. Is this a violation of the theory of relativity.
A television set connected to a 121 V outlet consumes 88 W of power. How long does it take for 10 million electrons to pass through the television.
To demonstrate the tremendous acceleration of a top fuel drag racer, you attempt to run your car into the back of a dragster that is "burning out" at red light before the start of a race. (Burning out means spinning the tires at high speed to heat..
How much time is necessary for the torso to come to rest
Expand Lagrangian to second order about equilibrium coordinates, r_0, phi = wt and find the condition for stability against small oscillations.
The pilot of an aircraft wishes to fly due west in a 37.70 km/h wind blowing toward the south. The speed of the aircraft in the absence of the wind is 191 km/h.
A 75 kg parachutist descends through a vertical height of 310 m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21°C.
At what angle have to the laser beam in the diagram be aimed at mirrored ceiling in order to hit the midpoint of the far wall? The length of the room is a=4.9 m and its height is b=3.00 m.
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