Will mark brainliest! Need this done ASAP.

Gravitational Force Contributions

The equation says that the force (F) between two objects is ... and, as of 2007, US scientists have measured it at 6.693 × 10−11 cubic metres ... Newton saw an apple fall to the ground and it made him wonder why the ... Newton's law tells us that the strength of the gravitational force ... Contribute Subscribe.

Explanation:

if im wrong im sorry but it said reaserch

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: