1. The speaker uses needles from two

trees native to

Florida

Georgia

Alabama

2. How many measurements did the

speaker make of each needle type?

-)

eight

ten

twelve

3. The speaker reduced human error by

the measurements.

repeating

rounding

What is needed to set a body in motion

Which describes Ernest Rutherford's experiment? 1. Positive particles are fired at gold foil. Most bounce back, but some pass through. 2. Negative particles are fired at gold foil. Most bounce back, but some pass through. 3.

The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 95.2 m.

Which is not an NOT the measure of the frequency of a wave? a. 0.10 s per wave b. 5 hertz c. 2 cycles per second d. 4 waves per second

Tex, an 85.0 kilogram rodeo bull rider is thrown from the bull after a short ride. The 520. kilogram bull chases after Tex at 13.0 m/s. While running away at 3.00 m/s, Tex jumps onto the back of the bull to avoid being trampled.

Explain how atoms are aligned in a magnet in terms of the North and South poles.

Which of the following has the largest gravitational potential energy A. a 10kg dog running down the street at 30mph B. a tightrope walker slowly crossing niagara falls C. a 0.02kg bullet moving down the barrel at 800mph D.

Why does the speed of an object change when a force acts on it?

What are factors that would change the position of the wave lengths measured? (There are more than one answer.) a) size of the tube b) tuning fork frequency c) distance between the tuning fork and tube d) room temperature e) area of the tube

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.