Gasoline, kerosene, and coal.
The pathway for you to be able is in your room you need
Answer:
Explanation:
Convert the mass to kg:
375g = 375/1000kg = 0.375kg
F = ma
-20 = 0.375a
a = -20/0.375
a = -53
The object is accelerating at 53m/s/s backwards assuming that the forward motion is positive.
Answer:
68 readings.
Explanation:
We need to take this problem as a statistic problem where the normal distribution table help us.
We can start considerating that X is the temperature of the solution, then
For a confidence level of 90% our is 1.645
Therefore,
Substituting for and re-arrange for n, we have that n is equal to
We need to make 68 readings for have a probability of 90% and our average is within