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An object with a mass of 3.50 kg moves in a straight line on a frictionless horizontal surface with a speed of 2.0 m/s. Find the kinetic energy and the net work done on the object to make it reach this speed if it started from rest.
A person pulls on a spring, stretching it 15 cm, which requires a maximum force of 750 N. Find the potential energy stored in the spring when it is stretched by 15 cm and compressed by 5 cm.
A uniform electric field with 500 N/C is parallel to a flat square area of 115 m 2 . Calculate the electric flux.
A solid conducting sphere with an area of 16 m 2 has a total charge of 4 μC. Determine the electric field through the Gaussian surface.
if in the process of rubbing the lenses of the eyeglasses, 6.28 x 1010 electrons were tranferred.
A. What is the charge of the lenses and the nylon cloth?
B. What is the change in their masses?
a, b, and c have units of meters, s = a, what is [s] ?
a, b, and c have units of meters, s = a + b, what is [s] ?
a, b, and c have units of meters, s = (2a + b)b, what is [s] ?
a, b, and c have units of meters, s = (a + b) 3/c, what is [s] ?
a, b, and c have units of meters, s = (3a + 4b) 1/2/9c2, what is [s] ?
a, b, and c have units of meters, s = a, what is [s] ?
Three laws of motions
1. What is Van De Graaf Generator?
2. Why does the hair of Mr. Bean didn't stand when he touched the Van De Graaf Generator?
3. What kind of charging process occur when Mr. Bean walked near the trashcan?
4. What kind of charging process occur when Mr. Bean shakes hand with the security guard?
5. Define charging by conduction and charging by induction.
2. A ship sails 10 miles northward and then 15 miles east ward. How far is it from the starting point?
#332078 on Oct 2022