If the ‍♀️

work on a simple machine equals the output work, the

machine is said to be 100% efficient.

Answer here

Select all that apply. Which of the following energy sources are in someway derived from the sun?

How can you decrease an objects momentum

Explain how scientific knowledge develops through making observations about the natural world. Answer: Scientific knowledge develops through making observations about the natural world.

What are your five sences

What would we expect the number of chromosomes in a normal cell to be?

Model rocket A is launched at an angle of 70° above the x axis, with an initial velocity of 40 m/s. An identical rocket B is launched under the same conditions at an angle of 90° above the x axis, also with an initial velocity of 40 m/s.

Why is it that when you throw a Frisbee, it flies better when it is normally thrown and not upside down?

Four blocks of weights are required using which any body whose weight is between 1kg and 40 kg can be weighed. Find the four weights

Use the graph to determine the instantaneous speed at 2 seconds. m/s What is the average speed over the entire trip? m/s

Most volcanoes are located at A. transform boundaries. B. midocean ridges. C. convergent and divergent boundaries. D. hot spots.