If the 78.0 kg astronaut were in a spacecraft 6r from the center of the earth, what would the astronaut's weight be on earth? 764.4 n760 n764 n in the spacecraft?

Explanation:

According to Newton's law of universal gravitation:

Where:  

is the module of the attraction force exerted between the Earth and the astronaut

is the universal gravitation constant.  

is the mass of the Earth and is the mass of the astronaut.  

is the distance between Earth and the astronaut (measured from the center of the planet).

So, the weight of the astronaut will be the attraction force exerted between the Earth and the astronaut.

  (1)

  (2)

  (3)  Weight of the astronaut on Earth

  (4)

  (5)

  (6)  Weight of the astronaut in the spacecraft at a distance 6R from the Earth center

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 a)

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