It’s true, meteors break up as the fall from the stratosphere.
It is important to have a control group in an experimental investigation because if the experiment did not have the control group the data collected would not be accurate. For example if you're testing water turning into ice but you use a different freezer or ice tray for each experiment then there are some elements that would make your data inaccurate.
Answer:
46.77N/m
Explanation:
to find the spring constant you can use the following formula:
T: period of oscillation = 0.65s
m: mass of the object = 0.50kg
By doing k the subject of the formula and replacing you obtain:
hence, the spring constant is 46.77N/m
It is larger in plant cells than in animal cells
B is the correct answer, since all others are not true or are based on assumption
