What is an example of action and reaction forces?

a. a deep-space probe drifting in a straight path
b. a tennis racket striking a tennis ball
c. an air hockey puck moving at constant speed

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)