Why might a pump be needed in hydraulic system?

Water is being split to form two new substances hydrogen and oxygen is this a change of state?

Which of the following describes a magnet that only has a field when a current is present? permanent magnet magnetic domain electromagnet magnetic pole

What is the formula for newton's third law of motion

A box is at rest on a table. What can you say about the forces acting on the box?

A mosquito of mass 0.15 mg is found to be flying at a speed of 50 cm/s with an uncertainty of 0.5 mm/s. (a) How precisely may its position be known? (b) Does this inherent uncertainty present any hindrance to the application of classical mechanics?

Jump to Question: Which of these is not required for current to flow through a conductor? A. Source of electrical current B. Something to transport the current C. Something that causes current to flow through a conductor D.

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching

Can an animal survive being hit by a car going 60 mph

A balsa wood raft is 1.50 m long, 1.00 m wide, and 0.120 m high. the density of balsa is 380 kg/m^3. what is the mass of the raft? (unit=kg)

What is the difference between longitudinal and transverse waves?