F = ma
F = 87*1.62 = 140.94N = 141N
Answer:
Sound Waves
Explanation:
I remember doing a experiment where there was a bell in a vacuum. When the vacuum was turned on, over time, the bell was sound was drained out.
Answer: Phillipe wins the race
Explanation:
Given
Length of track=20 m
Velocity of Phillippe=2 m/s w.r.t sidewalk
Velocity of sidewalk=1.5 m/s
Rena velocity=2 m/s
Therefore absolute velocity of P is 2+1.5=3.5 m/s
Time taken by phillippe
=5.714+10=15.714 s
Time taken by rena
as the time taken by phillippe is less than rena therefore Phillippe wins the race.
Answer:
5.67 x 10^ 1
Explanation:
Move the decimal once to the left