Which of the following do you think describes populations of rock pocket mice that live on dark rocks?

a. About half of these mice have dark fur and about half have light fur

b. All or most of these mice have dark fur

c. All or most of these mice have light fur

Explain your reasoning. What biological process could influence the fur color of the rock pocket mice that live on light colored rocks vs. dark rocks?

(If you don’t know than just skip but don’t put random answers)

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

elctricity and magnet is conversion to it

the right answer is 0.3 meters per second