In this item, there needs to be a basis as to how many significant numbers can be present in a certain figure. If the answer 327.66 m/s is to be expressed as a 3 significant figures only, the answer would have to be 328. What was done here is to simply round up the units digit of the number since the decimal place (tenths) digit has a value of greater than 4.
The answer to this item is therefore letter B.
Answer:
true
Explanation:
when a ray of light travels from a less denser medium to a denser medium it tends to bend towards the normal.
Answer:
Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. What this means is that pushing on an object causes that object to push back against you, the exact same amount, but in the opposite direction.
Explanation:
Answer:
time require is 23.33 hours
Explanation:
given data
time t1 = 7 hours
time t2 = 10 hours
to find out
how long it take to fill vat if both pipe left open
solution
we consider here vat volume is v
so speed = volume / time .................1
inlet speed = v / 7 .................2
outlet speed = v / 10 ..................3
so from equation 2 and 3
net speed is = v / 7 - v / 10
net speed = 3
/70 × v
so here time is
time = v / net speed
time =
time = 70 / 3 = 23.33
so time require is 23.33 hours