Answer:
f2 = 140 Hz
Explanation:
let fundamental frequency is f1 = 70.0 Hz
formula for finding the higher frequency when fundamental frequency is known
fn = n f1 (where f1 is fundamental frequency and n = 1,2,3,4,5...........)
for the second frequency n=2
f2 = 2 × 70.0 Hz
f2 = 140 Hz
A pair of scissors .....................................
Answer:
the use of non-renewable fuels, a dramatic increase in the rate of accidental death, the disconnection of local community, the decrease of local economy.
Answer:
41.5 m/s
Explanation:
Since there are no external forces, momentum must be conserved.
Momentum P = mv.
Total momentum before the collision:
Total momentum after the collision:
solving for v:
(mu s) is the coefficient of kinetic friction, <span> (mu k) is a normal force,</span>
