Answer:
51. 7m/s
Explanation:
Take speed of sound in air = 340 m/s
fp = fs (V + Vp)/(V + Vs)
128 = 123 (340 + Vp)/(340 + 36.4)
Vp = 51.7m/s
Explanation:
Answer:
115 km/h
Explanation:
= Mass of car A = 690 kg
= Mass of car B = 520 kg
g = Acceleration due to gravity = 9.81 m/s²
a = Acceleration
u = Initial velocity
v = Final velocity
Converting to km/h
Initial velocity of car A = 115 km/h
Answer:
Acceleration,
Explanation:
It is given that, two isolated protons are separated by 2 nm. The force due to charged particles is given by :
Force due to mass of proton,
So, the acceleration of two isolated protons is . Hence, this is the required solution.
Answer:
B
Explanation:
the 3 electrons makes it neutral