Answer:
glass if for a good view, but for absorbing heat concrete and brick is the best
Explanation:
wood is not a good idea bc it can cause fires from too much heat and it absorbs less heat but all of that depends on how good the material your using
Answer:
Speed is a "scalar" quantity
(C) is the correct answer
An object could travel at 10 m/s to some point and then return to the origin at 10 m/s for an average speed of 10 m/s, however it's displacement over that time would be zero for a net velocity of zero.
The word that identifies the colour of an object seen under ordinary daylight is local colour.
The natural colour of the object, it is best seen on a matte surface because it is not being reflected and therefore distorted. It is the presentation of features of a particular locality.
Explanation:
Wheelchair ramp
An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.
Answer:
The distance of first minimum from central maxima is 4.25 m
The spacing between maxima in sound intensity is 8.5 m.
Explanation:
Given that,
Distance D= 15 m
Frequency = 200 Hz
distance between slits a=3 m
We know that,
The width of fringe,
(a). We need to calculate the distance of first minimum from central maxima
Using formula for distance
Put the value into the formula
(b). We need to calculate the spacing between maxima in sound intensity
Using formula for the distance of first maxima
Hence, The distance of first minimum from central maxima is 4.25 m
The spacing between maxima in sound intensity is 8.5 m.
