Answer:
the period does not change
Explanation:
In a system of connected spring and mass I was able to oscillate in a simple harmonic motion that is described by
x = A cos (wt + Ф)
Where A is the amplitude of movement, w the angular velocity and Ф the initial phase.
Angular velocity is given by
w² = k / m
The angular velocity eta related to frequency
w = 2π f
Frequency and period are inverses
f = 1 / T
We substitute
4π² / T² = k / m
T = 2π √m/k
As we ask to see the period does not depend on the amplitude, nor on the initial displacement, so the period does not change
Answer:
Bias may alter the result of the experiment because as the question says the primary colors are red, yellow and blue. The scientist had read a convincing article that showed that babies prefer those primary colors. But the scientist wanted to see that if babies preferred red and yellow to pink and white and pink and white are not primary colors. So bias alters the experiment
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.
C. The bowling ball and the bicycle
p = mv
P of bike = 12x5 = 60
P of rock = 2x20 = 40
P of ball = 5 x 10 = 60
