Ms.lu is adding a new room to her house. The room will be a cube with volume 4,913 cubic feet.What is tje length of the new room
2 answers:
Answer: 17 feet
Step-by-step explanation:
Given : Ms.lu is adding a new room to her house. The room will be a cube with volume 4,913 cubic feet.
Let s be the side of the square-room.
We know that the volume of a square is given by :-
Then for the given room we have
Taking cube root on both sides , we get
Hence, the length of the new room = 17 feet.
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Answer:
Problem 1) frequency: 160 heartbeats per minute, period= 0.00625 minutes (or 0.375 seconds)
Problem 2) Runner B has the smallest period
Problem 3) The sound propagates faster via a solid than via air, then the sound of the train will arrive faster via the rails.
Step-by-step explanation:
The frequency of the football player is 160 heartbeats per minute.
The period is (using the equation you showed above):
second problem:
Runner A does 200 loops in 60 minutes so his frequency is:
loops per minute
then the period is: 0.3 minutes (does one loop in 0.3 minutes)
the other runner does 200 loops in 65 minutes, so his frequency is:
loops per minute
then the period is:
Therefore runner B has the smaller period