<h2>
So, the correct answers are:</h2>
Travels in longitudinal waves
Travels most slowly through a gas
Speeds up when temperature is increased
Is caused by vibration
Explanation for correct answers:
Yes, it does travel in longitudinal waves
Yes, sounds weird, but travels faster in the water
Yes, does speed up when temperature is increased
And yes, Is caused by vibration.
<h2>
Wrong answer is:</h2>
Can travel through a vacuum
Explanation for wrong answer:
actually, in space, there is NO sound, because there are no particals for the sound to vibrate with, there's just empty SPACE.
Answer:
remove the danger that lead to injury
Explanation:
The best way is
- spot the reason for injury
- Then try best to remove that cause as fast as possible.
- Then spot the place of body where injury happened
- NOW treat for that
Answer:
D
Explanation:
Hooke's law states the force exerted by a spring is the product of its spring constant and its displacement.
F = kx
Solving for the spring constant:
k = F/x
All the springs are pulled with equal force (the weight of the mass), so the spring with the smallest displacement has the largest spring coefficient.
You should go into your basement or if you don't have one just stay away from windows and unstable objects
K=0.5 mu×u
K=2200J no matter the direction