Answer:
B
Explanation:
Because vector Y is longer than vector X
so when you take a magnitude( without minus ) each other
you see that Y>X
Answer:
The velocity of the police car is, v = 17.798 m/s
Explanation:
Given data,
The actual frequency of the siren, f = 2010 Hz
The observed frequency of siren is, f' = 2120 Hz
The velocity of the observer, v' = 0 m/s
The velocity of the source, v = ?
The formula for Doppler effect,
Where,
V - velocity of sound waves in air.
Substituting the given values,
v = 17.798 m/s
Hence, the velocity of the police car is, v = 17.798 m/s
Answer:
54 J
Explanation:
Work done = force * displacement
= 18 *3
= 54 J
Hello.
This statment is false.
Have a nice day
Answer:
<em>Air pockets.</em>
<em></em>
Explanation:
Air pockets in the cooling system are bubbles of air trapped within the lines (hoses and pipes) of the cooling system. This air bubbles enter the cooling system usually during the process of filling the radiator coolant fluid (usually water), or replacing the water pump or the radiator hose during repairs or servicing of the cooling system. <em>The trapped air prevent pressure movement that is needed by the coolant to move the heat generated from the engine cylinder, resulting in heat build up</em>. The solution is to "bleed" the engine through the radiator lid or some air release valves.
