Aspacecraft is traveling with a velocity of +3250 m/s. suddenly the retrorockets are fired, and the spacecraft begins to slow down with an acceleration whose magnitude is 10 m/s2. what is the velocity of the spacecraft when the displacement of the craft is +215 km, relative to the point where the retrorockets began firing?

3249.33 m/s

Explanation:

Given

Initial velocity =3250 m/s

acceleration

Displacement=215 km

using equation of motion

where

v=final velocity

u=initial velocity

a=acceleration

s=displacement

v=3249.33 m/s

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:

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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