In general, atmospheric pressure is greatest near earth's surface and as you move upward away from sea level.
a. decreases
c. stays the same
b. increases
d. doubles

The correct answer to the question is : Decreases.

EXPLANATION:

In general,the atmospheric pressure is always highest near the surface of earth.

As per the question, we are moving up. The more we go above the surface of earth, the air density gradually decreases.

The air pressure is the force exerted by air per unit area. It is the air density which determines the pressure exerted on a particular location.

As there is decrease of air density when we go upward from see level, the pressure exerted by air molecules decreases.

Hence, the atmospheric pressure decreases when we move upward from the sea level.

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

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: