What is the topic of this passage? experimentation on animals is cruel and unnecessary. it is wrong to test drugs and products on animals. just because animals cannot speak, it does not mean they do not feel any pain or discomfort. also, there is no guarantee that what is safe for animals will be safe for humans. however, these experiments still continue. in today’s world, where science has come so far in what it can do, there has to be a better way to test products.

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 answer is camped