I had this question on a quiz, it was X.
Formula
Angular Diameter = 206265 * (Actual
diameter / Distance)
Angular Dia * Distance = 206265 X Actual
dia
(Angular Dia * Dist.) / 206265 = Actual
diameter.
Given Data Angular diameter = 0.5 degrees
we know that sun is approximately 1AU
away
Distance = 93,000,000 miles
Angular size = 0.5 degrees X (60 min / deg)
X (60 sec / min)
Angular size = 1800 seconds of arc
Act. Diameter = (1800 X 93,000,000) /
206265
Act.diameter = 810,000 miles = 1,300,000
km
Assume sun as sphere
Volume of sun = 1.15*10 ^18 km?
We know that Volume of earth = 1.08 *
10 ^12 km3
Dividing vol. Of sun by earth
Volume difference is sun is 1.3 million times
bigger than earth. That's 1.3 million earth
could fit inside sun
Answer:
However, scientific findings in biomedical research are not always reproducible. ... that are promoting best practices and helping researchers perform the highest-quality science. ... in life science research and actions that can be taken to improve it. ... when designing experiments, take responsibility for depicting their results ...
Explanation:
The correct answer for this question is D) <span>Threshold frequency depends on the work function of a metal.
</span><span>It does not depend on intensity. Intensity of light only affects the number of electrons ejected. Threshold frequency is dependent on the type of metal . It is not determined by the incident photon . Each metal has its own threshold frequency. So the most feasible answer is d.</span>
To solve this problem we will use the general system of simple harmonic movement and compare this structure with the given value. From this equation we can find the phase. Our given value is
Data:
t = 2 s
The expression given from the theory for the harmonic movement is:
Where,
= Phase Angle
A = Amplitude
Here the Phase angle is given as
Comparing we have,
Replacing the time of t, we have that
Therefore the phase of motion at t=2s is