Answer:
A third group that does not use a cell phone before bedtime
Step-by-step explanation:
Both groups have the use of a cellphone before bedtime, and the amount used would affect their time to fall asleep, but another group is needed that doesn't use a cellphone to calculate the effect of it not being used and seeing the results.
Divide the distance by the speed:
10^8 / 10^5 = 10^3 days ( 1,000 days)
Answer:
$165
Step-by-step explanation:
Money spent:
Josh=42
Maia=48
Max=35
Mark and Victoria = 40
35 + 40 + 42 + 48 = $165
Answer:
627200LJ
Step-by-step explanation:
Height of box=5 m
Side of square base=4 m
Volume of rectangular box=
Using the formula
Volume of rectangular box=
Density of material=
We know that
Using the formula
Mass of rectangular box=
Gravity=
Weight of rectangular box,F=
Let L be the vertical distance traveled by box
Total work done =
Therefore,total work done against gravity ==627200 L J
Hence, the box requires work against gravity=627200LJ