Answer:
(A) 4.75 m/s^{2}
(b) 81.5°
Explanation:
radius (r) = 0.38 m
initial angular velocity (ω') = 1.5 rad/s
angular acceleration (α) = 2 rad/s^{2}
time (t) = 0.5 s
(A) tangential acceleration (a) = α x r
a = 2 x 0.38 = 0.76 rad/s^{2}
- radial acceleration (a') =
final angular velocity (ω) = ω + αt
ω = 1.5 + (2 x 0.5) = 3.5 m/s
a' = = 4.7 m/s^{2}
- total acceleration =
total acceleration = = 4.75 m/s^{2}
(B) tanθ
θ=
θ= = 81.5°
Answer:
X ray
Explanation:
To see an object the light used must have the same or smaller wavelength than the object. The size of an atom is about m, smaller than the wavelength, therefore we'll need radiation with a shorter wavelength <em>since X-ray wavelengths are about the same size as atoms this characteristic makes it ideal to use.</em>
I hope you find this information useful nd interesting! Good luck!
Answer:
The transmission of energy is one thing that is carried out by all kinds of waves. They transmit energy from one point, known as the source, to another point.
For instance, in electromagnetic waves, energy is transmitted as a result of vibrations between the magnetic field and electric field. In mechanical waves, energy is transmitted when the particles in the medium heat up and vibrate. Energy travels through particles in a medium.
Frequency of a sound wave is commonly referred to as pitch. That is the specialized name for frequency of a sound wave.
Just remember it as pitch.
Answer:
* Temperature changes
* Changes in the tension
* Errors in the meter marks
Explanation:
When we are using several meters to make a measurement we have several aspects that can cause the readings to differ.
* Temperature changes make the dilation between readings different, at higher temperatures the material of the meter expands and the reading decreases.
* Changes in the tension with which the meter is pulled to keep it straight, in general all materials bend under the action of gravity, so you have to pull them to make them straight, if the forces are different from the material is lengthened decide Young's modulus, inducing different readings
* Errors in the meter marks, especially in the initial part that is covered by a hook, different positions of the hook change the readings.
* Structural problems, such as rust, bends that create changes in the length of the meter material.