Explain how scientific knowledge develops through making observations about the natural world

Distinguish between theoretical mechanical advantage. How would these compare if a machine were 100percent efficient?

The latitude of any location on earth is the angle formed by the two rays drawn from the center of earth to the location and to the equator. the ray through the location is the initial ray. use 3960 miles as the radius of the earth.

A clever inventor claims to be able to make an electric car that makes its own electricity and never needs gas. The inventor claims that as the car moves, the wind generated by the motion spins a propeller.

What's the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms? 3 m/s 5 m/s 7 m/s 8 m/s 10 m/s

A right circular cone can be balanced on a horizontal surface in three different ways. Sketch these three equilibrium configurations, and identify them as positions of stable, unstable, or neutral equilibrium.

You walk into the kitchen and see a broken egg on the floor. Which of the following is an inference you can make based on this observation? A. The egg rolled off the kitchen counter. B. The dog will eat the egg on the floor. C.

6. A Cadillac Escalade has a mass of 2 569.6 kg, if it accelerates at 4.65m/S force on the car?

A sphere is charged with electrons to -1 * 10-5 C. How many electrons make up this charge? The elemental charge is 1.6 * 10-19 C.

Which of the following choices correctly identifies the process created by moving a magnet through a conducting loop? a. conduction b. magnetic field generation c. trasformation d. electromagnetic induction

12. One object has half the mass of another object. The first object also has half the - --. a. inertia b. velocity c. gravitational acceleration d. all of these