Force applied on first mass = 2.8×3.9 = 10.92N
same force = 8.2×a
therefore
a = 10.92÷8.2 = 1.33ms-²
C. A complete revolution is 360 degree. two revolution is 720.
Answer: What do you mean which of the following is science ?
Explanation:
Answer:
The correct answer is b, x = 9 cos (pi / 2 t)
Explanation:
The equation that describes a simple pendulum is
θ = θ₀ cos (wt + φ)
The angle is measured is radians
θ = x / L
We replace
d / L = x₀ / L cos (wt + φ)
x₀ = 9 in
We replace
d = 9 cos (wt + φ)
Angular velocity is related to frequency and period.
w = 2π f = 2π / T
The period is the time of a complete oscillation T = 4 s
w =2π / 4
w = π / 2
Let's replace
x = 9 cos (π/2 t + φ)
As the system is released from the root x = x₀ for t = 0 s
x₀ = x₀ cos φ
Cos φ = 1
φ = 0°
The final equation is
x = 9 cos (pi / 2 t)
The correct answer is b
Explanation:
In science energy is simply defined as the ability to do work. Anything that causes work to be done must have expended some form of energy .
Energy is broadly categorized into two parts;
- Kinetic energy is the energy due to the motion of a body.
- Potential energy is the energy at rest in a body.
- Other forms of energy stems these two forms of energy.
- Thermal energy, mechanical energy are examples of kinetic energy.
- Chemical energy, gravitational energy are examples of potential energy.
- Energy is neither created nor destroyed but transformed from one form to another according to the law of conservation of energy.
learn more:
Kinetic energy brainly.com/question/4997571
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