If the water in the bathtub has a higher temperature than the air in the bathroom, which will occur?
no heat exchange will take place.
heat will flow from the water into the air.
cold will flow from the air into the water.

Heat will flow from the water into the air.

Explanation:

Natural flow of heat is always from higher temperature region to lower temperature region.

So here we know that water is at higher temperature and air in the room is at lower temperature

So natural flow of heat will take place from water to room air.

This flow may be due to convection heat flow or radiation heat flow.

So here correct answer would be

Heat will flow from the water into the air.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

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: