Here is for #2.
Answer:
She has a Velocity of 4.0
Explanation:
Δv = ΔM /m
So in our case is is Δ4.000 = Δ220 /55
Answer:
Speed of the ambulance is 32.7 metres per second.
Explanation:
Let the actual frequency of the siren be .
Frequency observed by me when ambulance is approaching = 540 Hz
Frequency observed by me when ambulance is moving away = 446 Hz
Let be the speed of sound and be the speed of ambulance.Then according to Doppler effect:
When source is moving towards observer,frequency observed is given as
= 540 Hz
When source is moving away from observer,frequency observed is given as
= 446 Hz
Taking and solving the above two equations by eliminating ,
we get
Answer:
Moving
Explanation:
energy in the form of motion; depends on the mass and velocity of the object.
Have a good day!
Answer:2.7m/s^2
Explanation:
mass=2.3kg
Force=6.2Newton
Acceleration=force ➗ mass
Acceleration=6.2 ➗ 2.3
Acceleration=2.7m/s^2
Answer:banana
Explanation:
Because the amount of potassium is that