What did Ernest Rutherford expect to happen when he aimed a beam of particles at a thin gold foil?

A car moved 50 km to the North. What is its displacement?

Which one of the following is not part of john daltons atomic theory? a) all elements are composed of atoms b) all atoms of the same element have the same mass c) atoms contain subatomic particles d) a compound contains atoms of more than one

Which best explains why a washing machine does not represent a closed system? A. Water and power come from external sources. B. Most washers can use a variety of laundry detergent brands. C. It has multiple cycles, such as wash and spin. D.

What is the first thing to check when a refrigerator stops working?

Viruses are different from bacteria in that A / they can remain dormant on non-living surfaces B / they can be found just about anywhere C / they can infect just about every form of life

A baseball with a mass of 0.8 kg is given an acceleration of 20m/s. how much force was applied to the ball

Stephen can push with 200N of force on a couch. If the couch has a mass of 20 kg, how much acceleration will the couch have?

Which devices might use electromagnets? pick all that apply. 1. audio speakers 2. plastic combs 3. trains 4. doorbells 5. revolving chairs 6. cranes

Match each type of line or symbol, common to geologic maps, to its description. 1. Fault Line A. very dark and thick line 2. Contact Line B. very light and thin line 3. Axis Fold C. look like a stubby T 4. Strike and Dip D.

You drop your backpack out of a window from a height of 8.3 m. What is the impact speed of your backpack? A. 163 m/s B. 1.2 m/s C. 21.3 m/s D. 12.8 m/s