Answer:
t = S / V where S is distance sound travels and V the speed of sound
S = 20 + 20 - v t where v is speed of bat and t time to hear echo
S = 40 - v t
t = (40 - S) / v = (40 - V t) / v substituting S from 1st equation
v t + V t = 40
t = 40 / (v + V) = 40 / (340 + 2) = .117 sec = 117 ms
It’s an example of gravitational potential energy
Answer:
Explanation:
a_c = ω²R
14 rev/min (2π rad/rev)(1 min/60 s) = 1.466 rad/s
a_c = 1.466²(0.27/2)
a_c = 0.29 m/s²
Le hamster est lent
Correct answer choices are:
A. The spheres develop opposite charges.
D. Electrons move from Sphere A to Sphere B.
G. The spheres are charged through induction.
Explanation:
If a negative object is utilized to energize a neutral thing, then both objects become energized negatively. In order for the neutral ball to convert negative, it must obtain electrons from the negatively energized rod. A neutral metal ball is affected by a positively charged metal rod.
