A situation that involves the transfer of heat by means of convection must involve the exchange of fluid currents such as land and sea breezes.
Heat transfer by convection is a method of heat transfer by which heat is transferred between two bodies through through currents of moving fluids or gases.
The following are examples of heat transfer by convection;
- land breezes cooling the sea at night
- sea breezes cooling the land during the day
- boiling of water
- circulation of blood, etc
Thus, a situation that involves the transfer of heat by means of convection must involve the exchange of fluid currents such as land and sea breezes.
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Answer:
Speed of motorcycle is 40 mph and speed of car is 50 mph
Explanation:
Let the peed f the motorcycle is v m /sec
According to question speed of motorcycle = 2v-30 mph
Now it is given that in two hours car is 20 miles ahead from motorcycle
Distance traveled by motorcycle in 2 hour = 2v
And distance traveled by car in two hour = 2×(2v-30)
Now according to question

4v-60 = 2v+20
2v = 80
v = 40 mph
So speed of motorcycle is 40 mph
And speed of car = 2v-30 = 2×40-30 = 50 mph
Answer:
The force of the finger causes the books to accelerate and fall.
Explanation:
Option D because the temperatures there are like 800 degrees Fahrenheit which means it is enough o melt lead so that's the key element that caused Venus and earth to have different environments because energy is key to life.