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

Scientific notation for 836

Two similar gold spheres are separated by a distance of .34 m. The first sphere (A) has a charge of - 4.0 x 10^-8C and the second sphere (B) has a charge of - 5.0 x 10^-13 C. If the electrostatic Force on B due to A is 2.

A particle of mass M moves along a straight line with initial speed vi. A force of magnitude F pushes the particle a distance D along the direction of its motion. Part A: Find vf, the final speed of the particle after it has traveled a distance D.

Two long, straight wires are parallel and 25 cm apart. (a) If each wire carries a current of 50 A in the same direction, what is the magnetic force per meter exerted on each wire? (b) Does the force pull the wires together or push them apart?

An object traveling in a straight line accelerates. What will definitely happen due to the acceleration?

What causes standing wave?

If you lived downhill from a volcano and lava started to flow toward your home what could happen?

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed.

A horse canters away from its trainer in a straight line, moving 37 m away in 9.1 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed for the entire trip. Express your answer using two significant figures.

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 7000 N {/rm N}.