Calculate the velocity ratio of a machine if an effort is applied through distance of 20m to
overcome a load which moved through
distance of
4m what will be the efficiency of the machine if
it mechanical advantage is 3.

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

Which feature of a heating curve indicates a change ofn state

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?