If I _________ him, I would study hard.

A car with a mass of 400 kg is traveling at a velocity of 20 m/s. What is the kinetic energy of the car?

An older model car accelerates from rest to speed v in 10 seconds. A newer, more powerful car accelerates from rest to 2v in the same time period. What is the ratio of the power of the newer
car to that of the older car?

The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21.0cs. The total mass of the train is 875 g. What is the average power delivered to the train during the acceleration?

Who discovered the word atoms at the frist time?

The charge of electron was determined by using the oil drop experiment. It was determined by:

Which one of the following radioactive radiation consists of high-energy rays?

The number of electron in the atom always equal to atomic number.

In Niels Bohr's model of the atom, electrons are said to occupy specific energy levels or orbits around the nucleus. What is the primary feature of these orbits?

What is the electron configuration for magnesium(Mg) metal? Z = 12