Answer: 80 s
Explanation:
Speed is expressed in v= d/t, derive the equation so we can have time.
First conert km into meters to cancel out both units and only seconds will remain.
1.2 km x 1000m/ 1km = 1200 m
t = 1200 m /15 m/s = 80 s
Answer:
Gravitational force between masses there is Gravitational force .
Answer:
The value of the final velocity is 
Explanation:
Generally from kinematic equation
Here a is the acceleration which is equivalent to g
So
substituting 6 m for s , 4.2m/s for u
Answer:
Elements are arranged in the table by increasing atomic number.
Explanation:
In the modern periodic table, each element is represented by its chemical symbol. The number above each symbol is its atomic number.
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.
