A rader gun will determine the speed.
12 mg = 0.012 g
12 mg = 1.2e-5 kg
75 kg = 75,000 g
There are "Protons" & "Neutrons" in an atom inside the nucleus. They are very massive as compared to "Electrons" (which reside outside the nucleus).So, the sentence is correct.
In short, Your Final answer would be "True"
Hope this helps!
Answer:
0.05 cm
Explanation:
The compression of the original spring = 12 - 8.55 cm = 3.45 cm = 0.0345 m
By Hooke's law, F = ke
Where F is the applied force, k is the spring constant and e is the extension or compression. In the question, F is the weight of the car.
k = F/e = 1355 × 9.8 / 0.0345 = 384898.55 N/m
This is the spring constant of the original spring. The question mentions that the force constant of the new spring is 5855.00 N/m smaller. Hence, the force constant of the new spring is 384898.55 - 5855 = 379043.55 N/m
With the new spring installed, the compression will be
e = F/k = 1355 × 9.8 / 379043.55 = 0.035 m = 3.5 cm
The difference in the compressions of both springs = 3.5 cm - 3.45 cm = 0.05 cm
You use the equation potential energy= mass x gravity x height. 10x2x9.8=196.