Answer:
y = -6.57 10⁻³ m
Explanation:
The movement of water is an oscillation in the vertical direction that can be approximated as a simple harmonic movement
y = A cos (wt)
where the amplitude is A = 0.75 m and the angular velocity is related to the frequency
w = 2π f
w = 2π 1.25
w = 7.85 rad / s
we substitute
y = 0.75 cos (7.85 t)
we look for the amplitude for a time of t = 2.20 s, remember that the angles are in radians
y = 0.75 cos (7.85 2.20)
y = -0.00657 m
y = -6.57 10⁻³ m
Answer:
90 J
Explanation:
Change in potential energy when the spring is stretched
ΔU = ∫[(F) dx]................... Equation 1
Where F = 40x-6x²
Substitute into equation 1
ΔU = ∫[40x-6x²]
ΔU = [40x²/2 + 6x³/3 +C]
ΔU = [20x²+2x³ +C]
If the spring is stretch from x = 0m to x = 2m
ΔU = [20×2²+2×2³+C]-[20×0²+2×0³+C]
ΔU = [80+16+C]-[C]
ΔU = 90 J.
Hence the change in potential energy of the spring = 90 J
Answer:
Fg = gravitational force. When a force is applied on the body, not only the applied force is acting there are many other forces like gravitational force Fg, frictional force Ff and the normal force that balances the other force. Therefore, the net force formula is given by, FNet = Fa + Fg + Ff + FN.
Answer:
The flow of electric charge
Explanation:
Electricity:It is defined flow of electric charge.
It is defined as the flow of charge per unit time.
Electric charge can be negative or positive .
Mathematical representation :
If charge Q flowing through the conductor and time taken in flow of charge is t seconds.
Then, current
S.I unit of current is Ampere.It is scalar quantity.
Answer:The flow of electric charge.