The thermal motion of their particles spreads into your body. But there are different ways for that heat to transfer: It can transfer by conduction, convection, or radiation. Conduction is the transferring of heat by direct contact. Convection is transferring heat through the motions of fluids (gases and liquids).
Answer:
b. Hill top
Explanation:
On a topographic map, the closed circles are meant to represent a hill. So if the contour lines are creating a group of concentric closed loops then it must be an indication of a hill.
Baking a cake would be a chemical change because the baking powder/soda undergoes through a reaction, you can tell because it generates bubbles/bumps when you bake it.
A chemical change is also irreversible so when you bake the cake, you cannot separate the ingredients.
So your answer would be B. Baking a cake
Hope this helps !
Answer:
40.3 min
Explanation:
First of all, let's convert every quantity into SI units:
(speed in the first part of the trip)
time during which the person has stopped
(average speed of the whole trip)
The average speed is the ratio between the total distance covered, d, and the total time taken, t:
(1)
The total distance covered is simply
where is the time during which the person has moved at 92.5 km/h.
The total time taken is
So (1) becomes
Solving for :
which corresponds to
So the total time of the trip is