Read the passage: chimps can use sign language to talk to their trainers. monkeys can learn to count. a crow can figure out how to use a stick to get at that hard-to-reach grub. chickens can learn to play checkers. even worms can be taught to run mazes. so which animal is the smartest? you're probably thinking that chimps are smarter than chickens. and that crows are smarter than worms. and that you’re smarter than all of them. which element of this passage tells you that the writer's purpose is to give you information about animal intelligence? the writer explains which animals can perform tricks. the writer knows that humans are the smartest animals of all. the writer asks you a question that she plans to answer in the text

To my mind the correct answer is the last one: "The writer asks you a question that she plans to answer in the text”. I think that the writer makes the questions and its possible answer in order to get the audience engaged with the text and to invite them to continue reading.

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:

d

explanation: