What is meant by focal length?

According to Newton's First Law of Motion, a moving object that is not acted on by an unbalanced force will

Something is thrown in the air and 5.35 seconds later it lands on something 2.1 meters from the ground. How fast was it thrown up?

A model rocket weighing 4.9 N launches from a pad. How much work does the little rocket engine do in the first 4 meters

A fellow astronaut passes by you in a spacecraft traveling at a high speed. The astronaut tells you that his craft is 21.1 m long and that the identical craft you are sitting in is 17.3 m long.

What is the average velocity of atoms in 2.00 mol of neon (a monatomic gas) at 308K?

Our 12 V car battery does not appear to be functioning correctly, so we measure the voltage with a volt meter and find that the voltage on the battery is only 9V.

A strong lightning bolt transfers about 27.88 C to Earth. How many electrons are transferred? The elemental charge is 1.602 * 10-19 C. The lightning bolt discharge lasts one millisecond.

What is the speed of a bobsled whose distance-time graph indicates that it traveled 121m in 26s? m/s

Which formula describes newton's second law of motion?

Which statements regarding the sun's nuclear fusion are true? select all that apply. a. nuclear fusion only occurs in the core. b. hydrogen fuses to form helium. c. fusion in the sun will continue for at least 1 trillion more years. d.