Answer:
2.2 m/s
Explanation:
<u>solution:</u>
To calculate change in stored energy at desired extension
ΔU = 1/2*k*(δx)^2
= 1/2*3700*(0.37^2-0.180^2)
= 201 N.m
use work energy theorem
ΔU = ΔK = 1/2*m*v^2 = 201
= 2.2 m/s
<u>note:</u>
calculation maybe wrong but method is correct.
Answer:
The total displacement is 102 km
north of east.
Explanation:
We can treat this problem as a trigonometric one, so we need to calculate the total displacement on the north and east.

and

The total displacement is given by:

with an agle of:

Answer:
165.2762 m/sec
Explanation:
The initial mass of the rocket and the fuel
M₀ = 5.02e6 kg
The initial mass of the fuel
Mf₀ = 1.25e6 kg
The rate of fuel consumption
dm/dt = 370 kg/sec
The duration of the rocket burn
Δt = 450 sec
The rocket exhaust speed
Ve = 4900 m/sec
The thrust, T
T = Ve (dm/dt) = 1813000 kg m/sec²
The mass of the expended propellant, ΔM
ΔM = Δt (dm/dt) = 166500 kg
The rocket's mass after the burn
M₁ = M₀ − ΔM = 4853500 kg
The speed of the rocket after the burn
Δv = Ve ln(M₀/M₁) = 165.2762 m/sec
Answer:
<h3>The answer is option B</h3>
Explanation:
The frequency of a wave can be found by using the formula

where
c is the velocity
From the question
wavelength = 0.39 m
c = 86 m/s
We have

We have the final answer as
<h3>200 Hz</h3>
Hope this helps you
Open circuit ......fiend do