A 100W light bulb worked 6h. How much will we pay for electricity if 1KWh costs 6 dinars?

How is a frame of reference used to measure motion

True or False? The superposition or overlapping of two waves always results in destructive interference between the different waves.

If you were to be drawn into a black hole, what would happen? To the black hole, not to you.

A student submerges an irregularly object in a graduated cylinder half filled with water. The level of the water in the cylinder rises from 17.8 ml to 49.7 ml. If the density of water is 0.9984 kg/liter, calculate the mass of the object in grams.

Einstein's theory of special relativity contains some very strange ideas such as time dilation (moving clocks run slow), length contraction (moving lengths are shorter), and lack of absolute simultaneity. What is the basis of these ideas?

Find the work done by a 25N force applied for 6 meters

The buildup of charges on an object is called

Which of the following statements is true? The freezing and boiling temperatures of a substance are the same. The freezing and condensation temperatures of a substance are the same. The freezing and melting temperatures of a substance are the same.

What's bigger 32A or 32B

Two charged objects have a repulsive force of. 080 N. if the charge of both of the objects is doubled, then what is the new force?