What can reduce a machines efficiency

If a ball is thrown upward, how fast would it have to be thrown to reach a maximum height of 29m? How long was the ball in the air when it reached this height?

In which situations is elastic potential energy present? Check all that apply. A bow is drawn back from its equilibrium position. An arrow rests on a bow. A spring toy dart gun is unloaded. A spring toy dart gun is loaded with a dart.

How are the functions of the cytoskeleton and the cell wall similar

What is the correct defenition of velocity

The pressure exerted by a phonograph needle on a record is surprisingly large. if the equivalent of 1.00 g is supported by a needle, the tip of which is a circle 0.210 mm in radius, what pressure is exerted on the record in n/m2?

What part of the atom does nuclear radiation come from?

Why should scientists write reports and give oral presentations of the steps and results of their in investigations?

Which of these rocks are formed by volcanic activity? select the two correct answers. a. marble b. basalt c. limestone d. granite e. sandstone

Which source is most likely an authority on the subject? Dr. Vale, a pediatrician, discusses electrical circuitry on her home-improvement website. Jonah, an amateur cook, teaches his son how to make the best grilled cheese sandwiches.

What methods can be used to break down substances into elements