Answer:
The force of the floor on the briefcase
Explanation:
The briefcase hits the floor and stops the falling which is reacting to the briefcase that was falling and hits the floor.
The falling briefcase would be the action force because it is moving downward
and
The reaction force would be the floor because it will react on the briefcase.
Hope this Helps
<span>The turbine, since it is a rotary engine that turns into mechanical energy the energy of a stream of water, steam or gas. The basic element of the turbine is the wheel or rotor, which has blades, propellers, blades or hubs placed around its circumference, such that the moving fluid produces a tangential force that drives the wheel and turns it. This mechanical energy is transferred through an axis to provide movement of a machine, a compressor, an electric generator or a propeller.</span>
F3 -4 wouldn’t even be a guhd add up tbsh jus delete it
Answer:
x=45
Explanation:
by taking 42 and dividing it by 14 you get 1/3, because 14 is 1/3 of 42 you can then see that the ratio is multiplied by 3. si then you can just multiply 15 by 3 to get 45
Answer:
option b ) is correct
Explanation:
Let d be the distance in km from the place of lightning . velocity of sound is 340 m /s approx
in km/ s it is 0.34 km/s
time in sec taken by sound to cover a distance of d km
d / .34 = t
d = .34 t
d =
d = t / 3
so option b ) is correct . ,