Volume of the original block (V) of length (l), width (w) and height (h) is given by the following equation
![V = l*b*h](https://tex.z-dn.net/?f=V%20%3D%20l%2Ab%2Ah)
hence volume of original block, V = (6)(4)(10) = ![240 cm^{3}](https://tex.z-dn.net/?f=240%20cm%5E%7B3%7D)
Now say we cut this block in two equal parts, than the length of new block will be
; where as its width and height will be same as of original block i.e. 4 cm and 10 cm respectively.
So, Volume of half-block is
; or we can say that the volume of half-block is half that of orignal block.
Answer:
Noting the color of a solution when heated
Explanation:
Experimental scientific investigation is a process to get answer of question scientifically. This process makes uses of collecting observation and identifying the process in physical word.
Thus, all the option given are a part of scientific observation but only Noting the color of a solution when heated explains the experimental scientific investigation.
Answer:
Explanation:
Given
y(x) = x² + x ( x represents time in seconds )
A )
value of y at x = 2
= 2²+2 = 6 m
value of y at x = 5
= 5²+5 = 30 m
displacement = 30 - 6 = 24 m
Time duration = 5 - 2 = 3 s
average velocity
= displacement /Time duration
= 24 / 3 = 8 m /s
B ) For x changing from x to x plus ie for small change in x :
value of y at x = 2
= 5
For small change in x , the value of y will again be 5 so displacement during small change in x will be zero . Hence average velocity will be zero.
C )
y(x) = x² + x
dy / dx = 2x + 1
dy / dx represents instantaneous velocity
so when x = 2
instantaneous velocity = 2 x 2 +1
= 5 m /s
Answer:
D. Alaska is in the half of Earth that's illuminated longer by sunlight.
Explanation:
Alaska is closer to the north poll than Florida causing longer day during the summer because Alaska is facing the sun (roughly) 20 hours out of the day.