Answer:
yes it does exert a force, it pushes it up
Explanation:
this is called normal force
if it didn't exert a force the book would keep going down
according to newton every force has an equal amd opposite reaction
so the book exerts a force on the table and vice versa
hope this helped
To solve this problem we will use the concepts related to thermal expansion in a body for which the initial length, the coefficient of thermal expansion and the temperature change are related:
Where,
= Change in Length
= Coefficient of linear expansion
= Change in temperature
= Initial Length
Our values are:
Replacing we have,
Therefore the change in milimiters was 0.4126mm
Answer:
This is a good experiment, however there are a few flaws
Explanation:
In this experiment, the battery is not replaced. Which can then affect the experiment if it had sustained damage from the failed attempts in the garage, and then being moved to the second scenario. Another possibility is that the battery was faulty from the start, which would definitely affect the results negatively.
Another flaw would be the temperature. The first scenario of a warm garage is fine, however after being moved to an environment below zero, the water in the car would have frozen, and many other systems would be impaired. Therefore the starting of the car would be influenced by more than just the battery.
Answer:
40 km/h
Explanation:
First...
Look at the formula speed is equal to the distance over time or s = d/t.
Next...
Use the formula: 240/6.0
Finally...
Solve: 40
So the answer: 40 km/h