Answer:
parallel
Explanation:
In parallel voltage remains same and equal to supply voltage. All the 120V bulbs are connected in parallel to the power supply so that voltage accross them is equal.
The De Broglie wavelength of the electron is equal to
where h is the Planck constant and p is the electron's momentum. Since this wavelength must be equal to that of the x-ray,
we can re-arrange the previous equation to find the momentum of the electron:
The kinetic energy of the electron is equal to the square of the momentum divided by twice its mass:
When the electron is accelerated by a potential difference , the energy it gains is
where q is the electron charge. Re-arranging the formula, we find the potential difference:
The answer is Capillary action. apex
Answer:
Explanation:
Laws of refraction:
(a) The incident ray, the refracted ray and the normal at the point of incident all lies in the same plane
(b) The ratio of the sine of incident to the sine of refraction is a constant for a given pair of media, which is the refractive index of the second medium with respect to the first medium. The is also called Snell's law
from Snell's law,
Index of refraction of the glass = sini/sinr.............. Equation 1
where i = incident angle, r = angle of refraction.
<em>given: i = 45°, r = 30°</em>
<em>Substituting these values into equation 1,</em>
Index of refraction of the glass = sin45°/sin30°
Index of refraction of the glass = (1/√2)/(1/2)
Index of refraction of the glass = 2/√2
<em>Index of refraction of the glass = √2.</em>
<em>Therefore, The Index of refraction of the glass = √2.</em>
<em></em>
<span>The statement, Quantities must
have different units before they can be added or subtracted, is false. <span>You need to note when you add or subtract units, they
must be first homogenous or the same. In conversion factors, always check for
the units. Suppose that you are given the area of a certain house which is
164m2. You are asked to find it in square feet. You will need to multiply
0.305m by itself to get m2. You have (0.305m)^2 is equal to 0.093025ft2. Now
you have an equivalent factor of 1ft2 is equal to 0.093025ft2. After that,
divide 164m2 by 0.093025ft2 and you will get 1762.97ft2. </span></span>