Answer:
The the magnitude of the maximum velocity and acceleration are 16.93 m/s and .
Explanation:
Given that,
Rate = 2940 rev/min
Amplitude = ±5.50 cm
(a). We need to calculate the magnitude of the maximum velocity
Using formula of maximum velocity
Where, A = amplitude
Put the value into the formula
(b). We need to calculate the maximum acceleration
Using formula of maximum acceleration
Hence, The the magnitude of the maximum velocity and acceleration are 16.93 m/s and .
An insulator does not have electrons that are free to move, and a conductor does.
Answer:
f1 = -3.50 m
Explanation:
For a nearsighted person an object at infinity must be made to appear to be at his far point which is 3.50 m away. The image of an object at infinity must be formed on the same side of the lens as the object.
∴ v = -3.5 m
Using mirror formula,
i/f1 = 1/v + 1/u
Where f1 = focal length of the contact lens, v = image distance = -3.5 m, u = object distance = at infinity(∞) = 1/0
∴ 1/f1 = (1/-3.5) + 1/infinity
Note that, 1/infinity = 1/(1/0) = 0/1 =0.
∴ 1/f1 = 1/(-3.5) + 0
1/f1 = 1/(-3.5)
Solving the equation by finding the inverse of both side of the equation.
∴ f1 = -3.50 m
Therefore a converging lens of focal length f1 = -3.50 m
would be needed by the person to see an object at infinity clearly
Answer:
The pitch stays the same I think
Explanation:
The final volume of the gas is 3 L
Explanation:
We can solve this problem by applying Boyle's law, which states that:
"For a gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"
Mathematically:
where
P is the pressure of the gas
V is its volume
The equation can also be rewritten as
For the sample of helium in this problem, we have:
Solving the equation, we can find , the final volume of the gas:
Learn more about ideal gases:
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