Answer:
Explanation:
mass, m = 0.520 kg
K = 8 N/m
Amplitude, A = 10.8 cm
(a)
Angular speed, 
maximum speed = ωA = 3.92 x 10.8 = 42.34 cm/s
(b) maximum acceleration, a = ω²A = 3.92 x 3.92 x 10.8 = 166 cm/s^2
(c) Speed of the particle is given by
v = 33 cm/s
(d) acceleration
a = ω²y = 3.92 x 3.92 x 6.80 = 104.5 cm/s^2
(e) x = A Sinωt
2.80 = 10.8 Sin 3.92 t
Sin 3.92 t = 0.259
3.92 t = 0.262
t = 0.0668 second
Answer:
a) Magnitude of the current density = 6.4 * 10⁻⁶ A/m²
b) The direction of the current density will be along the direction of the current and opposite to the movement of the positive charge
c) The cross sectional area of the ion beam is required
Explanation:
q = 1.6 * 10⁻¹⁹
Since it is doubly charged, 2q = 3.2 * 10⁻¹⁹
Speed, v = 1.0 * 10⁵ m/s
charge density, n = 2.0 * 10⁸
Current density, J = nqv
J = 2.0 * 10⁸ * 3.2 * 10⁻¹⁹ * 1.0 * 10⁵
J = 6.4 * 10⁻⁶ A/m²
J = 6.4 * 10⁻⁴ A/cm²
b) The direction of the current density will be along the direction of the current and opposite to the movement of the positive charge
c) Additional quantity needed to calculate the total current in the beam is the Cross Sectional Area of the beam since J = IA
Where I = current and A = Cross Sectional Area
The one with the lowest radio frequencies are the longest and the ones with the highest wave frequencies are the shortest. I think the answer is D
Answer:
2.7%
Explanation:
Given:
Uncertainty of the speedometer (u)= 2.5km/h
Speed measured at that uncertainty (v) = 92km/h
Percent uncertainty (p) is given as the ratio of the uncertainty to the speed measured then multiplied by 100%. i.e
p = 
%
p = 
%
p = 2.7%
Therefore, the percent uncertainty is 2.7%
Answer:
Explanation:
a) To get a rainbow from a prism arrangement, we will need
- A triangular prism
- A black cardboard box
- A source of white light (light from the window will suffice)
- A pocket knife
First, you cut a slit in one end of the cardboard with the pen knife.
Next you open up a space on top of the cardboard through which you can observe the experiment and its result.
Next, you place the triangular prism with its slant face facing the the cut slit.
Finally, position the slit to face the light from the open window, and adjust the prism till the projected bands of colored light (rainbow) is very much obvious on the other end of the box, opposite the slit.
b) For a light to yield rainbow, it most be composed of different component colors of light. The colors of light is due to the difference in wavelength, and dispersion is due to the different in the wavelengths of the component light. So to get rainbow from a light source, the light must not be monochromatic. This means that only light composed of component light of different colors can produce rainbow. Light from the sun for example is composed of 7 distinct colors of light, and white light can be created with just three colors; blue, green, and red light.
