Answer: 655.7 nm
Explanation:
Given
The slits are separated by
Distance between slits and screen is
Adjacent bright fringes are apart
Also, the distance between bright fringes is given by
a ball is kicked on level ground with a speed of 30 m/s at angle of 40 degrees above horizontal g Find the minimum velocity of t
1 answer:
Answer:
<em>The minimum velocity of the ball during its flight is 22.98 m/s.</em>
<em></em>
Explanation:
The velocity of the ball v = 30 m/s
The angle it makes with the horizontal ∅ = 40°
The minimum velocity of the ball during flight will be the horizontal axis component of the velocity, as acceleration is zero on this axis.
= v cos ∅
= 30 cos 40°
= 30 x 0.766 = <em>22.98 m/s</em>
You might be interested in
Answer:
Explanation:
Required
Which equation represents ohm's law?
Literally, ohm's law implies that current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R).
Mathematically, this can be represented as:
Convert the expression to an equation
Multiply both sides by R to make V the subject
Reorder
<em>Option (a) is correct; Others are not</em>
Answer:
Explanation:
When an electromagnetic wave passes through the interface between two mediums, it undergoes refraction, which means that it bents and its speed and its wavelength change.
In particular, the wavelength of an electromagnetic wave in a certain medium is related to the index of refraction of the medium by:
where
is the wavelength in a vacuum (air is a good approximation of vacuum)
n is the refractive index of the medium
In this problem:
is the original wavelength of the wave
n = 1.47 is the index of refraction of corn oil
Therefore, the wavelength of the electromagnetic wave in corn oil is: