Answer: It formed when lava cooled quickly aboveground.
Explanation: Cause its right
Answer:
f1/f2 =W1/W2 = 1/3
.0 f2 = 3f1
As ,
1/F= 1/f1 +1/f2
...1/40 = 1/f1 - 1/3f1
f1=> 80/3 cm
... f2 = 2f1 = 3 x 80/3 = 80 cm
Liquids are used in a hydraulic system because unlike gases, liquids CAN NOT BE compressed therefore making them the ideal substance for the hydraulic system.
Answer:
The frequency of the second wave is half of the frequency of first one.
Explanation:
The wavelength of the second wave is double is the first wave.
As we know that the frequency is inversely proportional to the wavelength of the velocity is same.
velocity = frequency x wavelength
So, the ratio of frequency of second wave to the first wave is
The frequency of the second wave is half of the frequency of first one.
Answer : They are complementary colors of light.
Explanation :
When blue and yellow light combines, it produces white light. This is because <em>blue light and yellow light are complementary colors of light</em>.
The pairs of colors when mixed and produce white color are called as complementary colors.
More complementary colors are :
(i) Red - Cyan
(ii) Green - Magenta
(iii) Blue - Yellow
Hence, we can say that blue light and yellow light combine to produce white light because they are complementary colors of light.
