Two trains are traveling side-by-side along parallel, straight tracks at the same speed. In a time t, train A doubles its speed.
1 answer:
You might be interested in
Answer:
The person's ear canal length is 2.91 cm.
Explanation:
Given that,
Frequency = 3000 Hz
Temperature = 30°C
We need to calculate the speed
Using equation of sound wave with temperature
[texs]v(t)=331+0.6\times T[/tex]
Put the value of T
We need to calculate the length
Using formula of closed organ pipe
Where, L = length
v = velocity
f = frequency
Put the value into the formula
Hence, The person's ear canal length is 2.91 cm.
Explanation:
At a height of 93 m, the gravitational potential energy is given by :
P = mgh
Where, m is the mass of a penny
We can find its mass.
We need to find how much potential energy will have transformed into kinetic energy at the half way point (46.5m). It can be calculated as :
Hence, a penny will have transferred 1.499 J of potential energy into kinetic energy.