Answer:
the air has to be unstable as well as it needs to be moved upwards.
Explanation:
it needs to be moved upwards and also needs to have unstable air.
Answer:
v = 18.84 m/s
Explanation:
Let the question says,"The blade of a 0.30 m diameter fan rotates 1200 rev / min. calculate the tangential speed."
It is given that,
Diameter of a blade of fan is 0.3 m
Angular velocity of the fan is 1200 rev/min or 125.66 rad/s
We need to find the tangential speed of the fan. The relation is given by :

r is radius of fan

So, the tangential velocity is 18.84 m/s.
Answer:
because it undergo combustion
Explanation:
and when combustion takes place high amount of energy is released
Answer:
b
Explanation:
this is because inoder. for combustion or burning to take place oxygen must be available
Answer:
The mass is inversely proportional to the acceleration so the acceleration a1 is twice that acceleration a2

Explanation:
The force of friction and the kinetic force make the law of mass in moving so





The forces are the same however at the moment to determinate the acceleration


are constant because they make the same motion however the difference of mass make the acceleration difference