A particular lever can lift a load with 80 percent efficiency. If 40 N of effort is applied 2.5 meters from the fulcrum, then what is the maximum load that can be lifted 1.5 m from the fulcrum?

A) 5333 N

B) 1920 N

C) 66.7 N

D) 53.3 N

What type of light is the most dangerous?

When an object accelerates, what about its motion changes? Question 1 options: Speed must change, but not velocity. Both speed and velocity must change. Velocity must change, but not speed. Neither speed or velocity can change

Sound waves have relatively long wavelengths. We can hear people around the corner before we can see them. Which wave behavior does this illustrate?

Julian is late to class and sees a list on the board: - are explanations of observations and hypotheses - are based on many experiments - have been revised over time - can be used to predict what may be expected in the future what is julian's class

Static cling makes your clothes stick together. what causes this to happen? 1. friction created by tumbling clothes 2. the nature of the material 3. external forces to the clothes 4. forces of nature

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.

Does the sun fuse hydrogen into helium or vice versa?

Is it possible to put a distance versus time graph to be universal go mine