A car with a 450 kg mass is accelerated at 2.5 m/s2. (a) What is the force causing this acceleration

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

From the question we have

force = 450 × 2.5

We have the final answer as

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i'm only doing this for the points : (

explanation:

i'm only doing this the points

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: