1) nuclear fusion
During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. During this process, radiant energy is released.
Answer:
A
Explanation:
houses use alternating current source
The trip from Camp Wood to the Pacific
Ocean and back again took 1.5 years to complete.<span>
</span>
<span>The </span>Lewis<span> and Clark </span>Expedition<span> from May 1804 to September 1806, also known as
the Corps of Discovery </span>Expedition, was the first
American expedition<span> to
cross what is now the western portion of the United States.</span>
Answer: Yes, he is exceeding the speed limit
Explanation:
Hi!
This is problem about unit conversion
1 mile = 1,609.344 m
Then the speed limit v is:
v = 75 mi/h = 120,700.8 m/h
1 hour = 60 min = 60*60 s = 3,600 s
v = (120,700.8/3,600) m/s = 33.52 m/s
38 m/s is higher than the speed limit v.
Answer:
4939200 m
Explanation:
v = Velocity of sound in air = 343 m/s (general value)
For the echo to reach Rip van Winkle it must cover the distance to the mountain twice. So, time taken for the sound traveling to the mountain once
![t=\dfrac{8}{2}=4\ hr](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B8%7D%7B2%7D%3D4%5C%20hr)
Distance is given by
![s=vt\\\Rightarrow s=343\times 4\times 60\times 60\\\Rightarrow s=4939200\ m=4939.2\ km](https://tex.z-dn.net/?f=s%3Dvt%5C%5C%5CRightarrow%20s%3D343%5Ctimes%204%5Ctimes%2060%5Ctimes%2060%5C%5C%5CRightarrow%20s%3D4939200%5C%20m%3D4939.2%5C%20km)
The distance to the mountain is 4939200 m