C. a cello playing music at the concert
Answer:
Length of pipe meter
Explanation:
Speed of a transverse wave on a string
where F is the tension in string and is the mass per unit length
Thus,
Substituting the given values we get -
Speed of a transverse wave on a string
For third harmonic wave , frequency is equal to
Substituting the given values, we get -
Length of pipe
Substituting the given values we get
for first harmonic wave
Length of pipe meter
Answer:
oa
Explanation:
it may be oa is the right answer for this question
but I don't know properly
Define
m₁= 55 kg, mass of Ben
m₂ = 25 kg, mass of Junior
v₁ = 0, initial speed of Ben (he was stationary)
v₂ = 8 m/s, speed of Junior
Consider the motion of Ben and Junior as occurring within a closed system.
Because momentum is preserved, the initial momentum of the system is equal to the final momentum of the system.
Refer to the figure shown below.
The initial momentum is
P₁ = m₁v₁ + m₂v₂
= (55 kg)*(0 m/) + (25 kg)*(8 m/s)
= 200 (kg-m)/s
Let V = the speed of Ben and Junior (in an embrace) after the collision.
The final momentum is
P₂ = (m₁ + m₂)V
= (55+25 kg)*(V m/s)
= 80V (kg-m)/s
Equate P₁ and P₂ to obtain
80V = 200
V = 2.5 m/s
Answer: 2.5 m/s