Why are force fields necessary to describe gravity?

A. gravity can only push objects apart

B. gravity is a type of air resistances

C. gravity acts between any two objects with charges

D. gravity is a non-contact force

Which drink is an example of a compound? a. lemonade b. ice tea C. vanilla milkshake d. water

Give an equation relating (f) and wavelength that best describes your observations

Match these items. 1. De Magnete (A) magnetite 2. iron oxide (B) demagnetize 3. man-made magnet (C) William Gilbert 4. strength decreases rapidly with distance (D) Oersted 5.

The current in a hair dryer measures 18 amps. The resistance of the hair dryer is 12 ohms. What is the voltage?

A 1 145.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 700.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.

What happens to the resistance of a filament if it is replaced by a shorter wire?

One group of scientists feel that global warming affects the frequency of hurricanes. Another group of scientists believe that global warming does not affect the frequency of hurricanes, but it makes the average hurricane stronger.

In an experiment, all participants receive a treatment but those in the control group recieves a false treatments

When the volume increased, what happened to the density?

8. Chemical weathering occurs more rapidly in what kind of climates? A. Desertlike B. Cold with high snowfall amounts C. Cool and dry D. Warm with abundant rainfall