Answer:
The new value of g 
Explanation:
Mass =290 g
Spring size = 40 cm
The size of spring after streches = 23 cm
Pulling the mass down at = 11.7 cm
The stopwatch shows the number of oscillations in 17.7 s = 9 osscillations.
The oscillation frequency is independent to g.

The amount of spring stretch due to the hanging mass, x, is dependent on g.

Therefore, the new value of g 
The displacement should be a negative value. since your zero point is where you dropped it. The answer is C
Answer:
Playing hockey, driving a car, and even simply taking a walk are all everyday examples of Newton's laws of motion.
Answer:
The energy E is 1603.008 J.
Explanation:
Given that,
Capacitor = 18.4 μF
Voltage = 13.2 kV
We need to calculate the energy
Using formula of energy
.....(I)
We know that,

Put the value of Q in equation (I)

On integration

Put the value into the formula

Hence, The energy E is 1603.008 J.
Answer:
The sum of the lengths of the sides is 2292 yards and the sum of the lengths of the triangle is 3056 yards
Explanation:
Since y represents the length of fence that is opposite (parallel) to the river and x represent the length of fence perpendicular to the river.
Therefore since we can use 3,056 yards of fencing
Side perpendicular to the river = x and,
Side opposite to the river = y = 3056 - 2x
The area of the rectangle formed (A) = Perpendicular side × Parallel side
∴ A = x(3056 - 2x) = 3056x - 2x²
A = 3056x - 2x²
To maximize the area, A' (dA/dx) = 0
∴ A' = 3056 - 4x = 0
3056 - 4x = 0
4x = 3056
x = 764 yards
y = 3056 - 2x = 3056 - 2(764) = 1528 yards.
Side perpendicular to the river = 764 yards and,
Side opposite to the river = 1528 yards
The sum of the lengths of the sides = 764 + 1528 = 2292 yard and the sum of the lengths of the triangle = 764 + 764 + 1528 = 3056 yards