An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?

The horse is galloping at 13 m/s. Five seconds later, after climbing the hill, the horse is moving at 5.5m/s. Find the accelerarion tgat describes this change in velocity

Which of the following formulas represents an olefin (aka alkaline) c2h4o c2h5oh c2h6 c2h4

What is the unit used for work?

A thin spherical glass shell in air is filled with an unknown liquid. A horizontal parallel light beam is incident on the shell and it is observed that the light is brought to focus on the surface of the shell directly opposite of the incoming beam.

If the the United States imports $100 million of goods and exports $150 million, what does the United States have?

How do inertia and centripetal force combine to keep an object moving in circular motion?

Compare and contrast the average kinetic energy of 0.5 L of coffee at 34°C, 0.5 L of coffee at 38°C, and 0.25 L of tea at 43°C.

A 7700-kg box car traveling at 14 m/s strikes a second car at rest. The two stick together and move off with a speed of 5.0 m/s. What is the mass of the second car?

What will happen if there is a change in a magnetic field?

Question 2 10 pts The voltage in a particular circuit is 10.0 V. The current in the circuit is 20 A. What is the resistance? A. 2.0 B. 30 C. 200 D. 0.5