Answer:
Option A
Explanation:
The interference color in an oil slick on a puddle results from the interference caused as a result of reflection of light waves from the top as well as from the bottom surface of the oil slick.
This causes a disparity in the path of light reflecting from the surfaces and hence the sunlight is a band of seven colors, i.e., VIBGYOR, the disparities in the path results in constructive interference of the light rays which enables us to see interference colors in an oil slick.
Answer: E = 1.93×10^-7 J
Explanation: The formulae for getting the energy stored in a capacitor is given as
E =Cv²/2
Where E = energy stored in capacitor (joules), C = capacitance of capacitor (farad), v = applied voltage =150v.
The formulae implies that we need to get the capacitance of the capacitor (C) first before we can get the energy.
From the parameters given to us
Area of plates =A = 87.5cm² = 87.5/10000 = 0.00875m²
Distance between plates = d = 4.50mm = 4.50/1000 = 0.0045m
C = ε0A/d
Where ε0 = permittivity of free space = 8.85×10^-12 F/m
C = 8.85×10^-12 × 0.00875/ 0.0045
C = 7.743×10^-14/0.0045
C = 1.72×10^-11 F.
Recall that E = Cv²/2
E = ( 1.72×10^-11 × 150×150) /2
E = 3.87×10^-7/2
E = 1.93×10^-7 J
Answer:
Storing it at a temperature greater than its Curie temperature will demagnetize it. The Curie temperature--named after the French scientist Pierre Curie--is the temperature at which magnets lose their permanent magnetism. ... Samarium cobalt, neodymium, and ceramic/ferrite magnets are brittle.
20 meters per second at 30 seconds.
Multiply 20 meters by the amount of seconds. 20*30 = 600 meters.
Answer:
i answered this question not that long ago....it's D
Explanation:
