Based on the field lines, what are the charges of the

objects?

X: positive

Y: negative

X: negative

Y: positive

X: negative

Y: negative

X: positive

Y: positive

Which two terms best describe the gravitational force? strongest, repulsive weakest, repulsive strongest, attractive weakest, attractive

Which of the following is NOT a scalar quantity A. 40 m/s B. 40 m North C. 40 m D. None of the above

In a series of rock layers, a geologist finds fossils of a pine trees and oak trees in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of tropical plants and trees. Which explains his findings? A.

A roller coaster track is 3000 meters long. It takes 100 seconds to travel once around the roller coaster. What is the average speed of the roller coast? Is the velocity constant throughout the trip? Explain

A piece of wire 10 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral triangle. How should the wire be cut so that the total area enclosed is (a) a maximum? (b) A minimum?

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.

The correctly balanced equation for H202 - H2O + O, is A) H202 - 2H2O + O2 B) H302 - H20+20, C) 2H, 02 - - 4H20 + 0, D) 2H, 02 - 2H30 + 0,

What happens to the wavelength of a wave if you increase the frequency?

In a transverse wave, the particle motion is what to wave motion? A. perpendicular B. parallel