Answer:
<em>The width of the lake is 340 m</em>
Explanation:
<u>Constant Velocity Motion</u>
It occurs when an object travels the same distance every equal interval. For example, if it travels 5 m in one second, then 10 m in two seconds, etc., it has a constant velocity.
The speed of the sound is assumed as v=340 m/s and the person measures the time that a sound goes and comes from the edge of a lake as t=2 seconds. The distance it travels is:
d = v.t
d = 340 m/s * 2 s
d = 680 m
But that distance is twice the width of the lake, the real measured width is 680 m / 2 = 340 m
The width of the lake is 340 m
Answer:
A lens
Explanation:
A lens forms images when light passes Through it bending the rays of in the process.A phenomena called refraction and the speed of light changes in the process because it enters a medium since it's wavelength is reduced.
Answer:
you start sweating and it would get hot
Make sure the triple beam balance is at 0 before you begin.
Answer:
The lid becomes tighter
It becomes tighter because metals have a lower heat capacity than glass meaning their temperature drops (or increases) much faster than glass for the same energy change. So in this example, the metal will contract faster than the glass causing it to be more tighter around the glass.
