Answer:
0.000234 seconds
Explanation:
Since the row is 0.15m, its radius of rotation must be 0.15 / 2 = 0.075 m
We can start by calculating the angular speed of the rod:
Since one revolution equals to 2π rad. The speed in revolution per second must be
26800 / 2π = 4265 revolution/s
The number of seconds per revolution, or period, is the inverse:
1/4265 = 0.000234 seconds
Answer:
Yes, the number of electrons determines the chemical properties of the atom.
Explanation:
Answer:
Distance covered by B is 4 times distance covered by A
Explanation:
For an object in free fall starting from rest, the distance covered by the object in a time t is
![s=\frac{1}{2}gt^2](https://tex.z-dn.net/?f=s%3D%5Cfrac%7B1%7D%7B2%7Dgt%5E2)
where
s is the distance covered
g is the acceleration due to gravity
t is the time elapsed
In this problem:
- Object A falls through a distance
during a time t, so the distance covered by object A is
![s_A=\frac{1}{2}gt^2](https://tex.z-dn.net/?f=s_A%3D%5Cfrac%7B1%7D%7B2%7Dgt%5E2)
- Object B falls through a distance
during a time 2t, so the distance covered by object B is
![s_B=\frac{1}{2}g(2t)^2 = 4(\frac{1}{2}gt^2)=4s_A](https://tex.z-dn.net/?f=s_B%3D%5Cfrac%7B1%7D%7B2%7Dg%282t%29%5E2%20%3D%204%28%5Cfrac%7B1%7D%7B2%7Dgt%5E2%29%3D4s_A)
So, the distance covered by object B is 4 times the distance covered by object A.
R 1,2 = 27.5 + 33.0 = 60.5 Ohms
1/ R 1,2,3 = 1/ 60.5 + 1 / 22 = 82.5 / 1331
R 1, 2, 3 = 1331 / 82.5 = 16.13 Ohms
I = U / R
I = 9 V / 16.13 Ohms = 0.557 A ≈ 0.56 A
Answer: C ) 0.56 Amps
Answer:
377 nm
Explanation:
Number of lines per meter is,
Grating element is,