You use a lever to lift a heavy tree branch You apply a force of 100 N and the

lever lifts the branch with a force of 350 N What is the mechanical advantage

of the lever?

What is missing from the co-accretion theory of lunar formation?

Displacement vectors of 3m and 5m in the same direction combine to make a displacement

Jamie is a hairstylist who works in a salon. He noticed that when many of the stylist or blow drying hair the power goes out what is the best scientific question that can be asked about Jamie's observations

If a certain mass has its velocity changed from 6.00 m/s to 7.50 m/s when a 3.00 n force acts for 4.00 seconds, find the mass of the moving object.

A 300.0-kg speedboat is moving across the lake at 35.0m/s what is the momentum of the speedboat

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

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?