You get home on a cold winter day and turn on the hea
ne on a cold winter day and turn on the heater. about 30 minutes later your house is finally
warm! this is an example of which method of heat transfer?
a.
b.
radiation
electro-magnetic waves
c.
d.
conduction
convection

The heat transferred by room heater to the room is an example of convection heat flow.

Option D

Explanation:

It is known that heat or thermal energy generally flows from high temperature to low temperature. Heat can be transferred in four ways. They are conduction, convection, radiation and electro-magnetic waves. So, in the present case, if we are turning on the heater highers the temperature of the room, we need to use room heaters. And generally room heaters utilize convection technology to flow the heat energy.

In convection mode of heat flow, the heat energy generated at the source i.e., in the coils of the room heater is made to flow away from the source using the fan or radiator kind of thing. So, this process of transfer of heat energy from the point of generation by making the heat flow or rise is termed as convection. And thus, convection is the best example which is used in room heater.

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

hope this !

f=ma newton

f=100x2.5=250n