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In a typical lightning flash, the potential difference between the cloud and the ground is 10^9 V and the charge transferred is 30 C. Suppose the decrease in energy of the transferred charge is used to accelerate a 1000kg car from rest. Calculate the final speed of the car.
Sodium ions (Na+) move at 0.844 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. compute the average current supplied to the car\'s motor?
What is magnitude of the net force on the student
Two cylinders have the same radius R = 0.6 m and length 0.6 m, but one is a solid cylinder of massM1 = 4.5 kg, What is the ratio of the final speed of the solid cylinder to that of the hollow cylinder
Janet has a 40% interest in the S corporation. All expenses that reduce DPGR are from wages, and all wages paid relate to DPGR. Explain how much QPAI and wages are allocated to Janet?
A 500 Hz whistle is moved toward a listener at a speed of 10 m/s. At the same time, What is the apparent frequency heard by the listener
A 2.0g metal ball that carries a charge of 10uC is placed into an electric field, what is the electric potential difference between point A and point B
A 2.1 kg solid sphere ( I= 0.4mR2 ) rolls along a horizontal surface with a speed of 7.8 m/s. What is the total kinetic energy of the sphere
Explain the concepts behind the gravitational constant, gc. Define the constant mathematically.
An aluminum-alloy rod has a length of 10.008 cm at 16.400°C and a length of 10.020 cm at the boiling point of water. (a) What is the length of the rod at the freezing point of water
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. What is the mechanical energy lost due to friction
An object is 24.0 cm from a concave mirror with a focal length of 18.0 cm. How far is the objects image from the mirror
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