Answer:
7.50 m/s^2
Explanation:
The period of a pendulum is given by:
(1)
where
L = 0.600 m is the length of the pendulum
g = ? is the acceleration due to gravity
In this problem, we can find the period T. In fact, the frequency is equal to the number of oscillations per second, so:
![f=\frac{N}{t}=\frac{20}{35.5 s}=0.563 Hz](https://tex.z-dn.net/?f=f%3D%5Cfrac%7BN%7D%7Bt%7D%3D%5Cfrac%7B20%7D%7B35.5%20s%7D%3D0.563%20Hz)
And the period is the reciprocal of the frequency:
![T=\frac{1}{f}=\frac{1}{0.563 Hz}=1.776 s](https://tex.z-dn.net/?f=T%3D%5Cfrac%7B1%7D%7Bf%7D%3D%5Cfrac%7B1%7D%7B0.563%20Hz%7D%3D1.776%20s)
And by using this into eq.(1), we can find the value of g:
![g=\frac{4 \pi^2 L}{T^2}=\frac{4 \pi^2 (0.600 m)}{(1.776 s)^2}=7.50 m/s^2](https://tex.z-dn.net/?f=g%3D%5Cfrac%7B4%20%5Cpi%5E2%20L%7D%7BT%5E2%7D%3D%5Cfrac%7B4%20%5Cpi%5E2%20%280.600%20m%29%7D%7B%281.776%20s%29%5E2%7D%3D7.50%20m%2Fs%5E2)
Answer:
Reduce you're speed, and let the other vehicle pass you
Power = (voltage) x (current). The motor consumes (12)x(206)=2,472 watts. Some of it is dissipated as heat, but most of it is used to do useful work by turning the engine over to make it start.
Answer:closed systems
Explanation:
A closed system is one in which matter does not enter or leave the system but there is exchange of energy between the system and its environment. In a closed system, the principle of energy conservation applies. The principle of energy conservation states that energy can neither be created nor destroyed but is converted from one form to another. An example of a closed system is a reaction vessel whose lid is closed.