Physics » Page 98

Physics

Angelique Sutton

You have two pendulums with cords that are exactly the same length. one is on earth (with an acceleration due to gravity of 9.81 meters/second2) and the other one is on the moon (with an acceleration due to gravity of 1.63 meters/second2). which one will have a longer period?

Answer Answers (1)

Physics

Leslie

A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s2 for 20 s. It then proceeds at constant speed for 1100 m before slowing down at 2.2 m/s2 until it stops at the station.

How much time does it take the train to go between the stations?

Express your answer using two significant figures. The answer is NOT 20s, as was answered and "verified" previously.

Answer Answers (1)

Physics

Cash Morton

Reflected light from a thin film of oil gives constructive interference for light with a wavelength inside the film of λfilm. By how much would the film thickness need to be increased to give destructive interference?

A. 2λfilm

B. λfilm

C. λfilm/2

D. λfilm/4

Answer Answers (1)

Physics

Miguel Figueroa

Which excited electron has the lowest energy?

Answer Answers (2)

Physics

Bailee Peck

A ball on a string is swung at a constant speed of 3m/s in a horizontal circle. if the string is 1.25m long what is the centripetal acceleration of the ball?

Answer Answers (1)

Physics

Harmony Tyler

A horse trots away from its trainer in a straight line. moving 38 m away in 9.0 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed and average velocity?

Answer Answers (1)

Physics

Leyla

Why aren't all atoms radioactive?

Answer Answers (1)

Physics

Alfred Jensen

Why would the discovery of a fossil imply that earth is much older than originally though?

Answer Answers (1)

Physics

Guest

What two properties show that the drink is a fluid

Answer Answers (1)

Physics

Duncan Hendrix

A car travels in a straight line for 3.7 h at a constant speed of 71 km/h. what is its acceleration? answer in units of m/s 2.

Answer Answers (1)

Physics

Kade Spencer

1. a) What is the weight of a 20.0 kg girl on earth?

Answer Answers (1)

Physics

Koen Greene

A group of barbarians are trying to turn a large wheel and axle to grind grain. What can they do to move the wheel with less effort?

Answer Answers (1)

Physics

Layne Adkins

If you wanted the pitch of a horn to drop relative to an observer, which way would you move the horn, relative to where that observer is located?

A. Leave it in the same place and play the horn more softly

B. Away from the observer

C. Towards the observer

Answer Answers (1)

Physics

Lyla Henry

What do Babys Come From

Answer Answers (1)

Physics

Elisha Huang

How are the magnets able to have zero resistance

Answer Answers (2)