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A strong lightning bolt transfers about 26 C to Earth. How many electrons are transferred? The elementary charge is 1.60218 × 10?19 C.
If he struck a ball with the a speed and launch angle that would result in a maximum 120m horizontal range on Earth, how far would it go?
Two forces F1 and F2, act at a point. F1 has a magnitude of 9.20N and is directed at an angle of 61.0 degrees above the negative x axis in the second quadrant. What is the magnittude of the resultant force
A transformer has input voltage and current of 10 V and 4 A respectively, and an output current of 0.8 A. how many turns are on the primary side
290 Kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
You hear a fire truck with a certain intensity, and you are about 1 mile away. Another person hears the same fire truck with an intensity that is about 10 times less. how far is the other person from the fire truck
A small sphere with a mass of 441 g is moving upward along the vertical +y-axis when it encounters an electric field of 5.00 N/C. what is the charge that it carries
The magnitude of the acceleration due to gravity
The two blocks of masses M and 2M shown to the right initially travel at the same speed v but in opposite directions. How much mechanical energy is lost to other forms of energy during the collision
At a dock, a crane lifts a 2094 kg container 14 m, swings it out over the deck of a freighter, and lowers the container into the hold of the freighter, How much work is done by the crane on the container?
What does the brightness of the bulb say about the current in the circuit? How much of the current is coming from each of the batteries
A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 415-N walk on the overhanging part of the plank before it just ..
What is the minimal mass of helium (density 0.18) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket, and balloon (but not gas) is 320.
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