Displacement/Time = 21m / 15s .
That's choice-D .
Answer:
B. Technician B only
Explanation:
Technician A says that valve overlap is the number of crankshaft degrees that both valves are closed. Technician B says that valve overlap is the number of degrees that both valves are open. Who is right? A. Technician A only B. Technician B only C. Both technicians A and B D. Neither technician A nor B
Valve overlap is when both the intake and exhaust valves are open. This occurs towards the end of the exhaust stroke, the intake valves are opened just before all the exhaust gases are released, providing more time for the intake air to enter the engine. Valve overlap must be shorter for a petrol/gasoline engine because the engine is drawing in fuel as well as air through the intake. ...it is not so for a sport car
the inlet valve and exhaust valve are located at the head of the engine. fuel enters the engine through the intake valve.
Law of conservation of momentum
67*x=4.2*5.6
Answer:
Check below for the answers and explanations.
Explanation:
Note: You did not provide the diagram you mentioned but I will explain to you the sequence of events that take place as a fluid cools. I believe you can apply this to the particular diagram that you have.
Sequence of events that take place as a fluid cools down:
- There is a reduction in the temperature of the fluid
- The speed of movement of the molecules will reduce
- Since there is a reduction in speed, the Kinetic Energy also reduces. KE = 1/2 mv²
- The density of the fluid will increase as the temperature decreases
- The molecules will be closer to each other as opposed to in a gas where there is collision of molecules
when the reflected rays of the mirror meets
Explanation:
When two incident rays go and strike to the mirror, their reflected rays meet and image is formed
