Humpty Dumpty (12 kg) sat on a wall (2 m high). What was his potential energy, before his great fall?

A. 235.2 J B. 235.2 N C. 24 J D. 246.1 W

The tendency of an object to resist changes in it motion

Which of the following is happening right now in the Milky Way? a The Sun is orbiting the Milky Way's galactic center b The Earth is orbitincelme Sun C Earth's Moon is orbiting the Earth d All of the above

Takes heat from a house and transfers it outside through coolant pipes

Which type of process repeatedly moves matter between different forms on Earth? a. a cycle b. natural laws c. a closed system d. conservation of matter

What kind of force do you use to squash a can?

What object oriented feature can we use to have a single test program, with one set of method calls in which the user can decide which bag implementation (array - or link-based) needs testing?

What might motivate someone to study forensics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. If r = 17.

A mass spectrometer accelerates doubly ionized atoms of charge 2e over a potential difference V before they enter a uniform magnetic field B which is perpendicular to the direction of motion of the ions.

A rotating water pump works by taking water in at one side of a rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120 m starts from rest and accelerates at 30.