Scientists use different types of microscopes to observe objects that are not visible to the naked eye. a scientist is reviewing various samples of pond water to determine what species of microorganisms live in the pond. the scientist wishes to make drawings of the structure of each microorganism and study each one's method of movement. which of the following microscopes would be best for the scientist to use?
a.
transmission electron microscope
b.
scanning electron microscope
c.
compound light microscope
d.
dissecting microscope

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:

c. newton's third law of motion