Answer:
False
Explanation:
We still use the old way. It's easier to understand the old way, and its NOT outdated.
Answer:
The sun heats the earth through radiation. Since there is no medium (like the gas in our atmosphere) in space, radiation is the primary way that heat travels in space. When the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.
Answer:
Phosphorous
Explanation:
it is the fifth element from the left and it is in the third period so it has 5 valence electrons
Answer:
Velocity, v = 0.164 m/s
Explanation:
We have,
Frequency of wave, f = 0.04 Hz
Wavelength, 
It is required to find the velocity of a water wave. The speed of any wave is given in terms of wavelength and frequency. Its formula is :

So, the velocity of a water wave is 0.164 m/s.
Answer:the Forces cancel out each other
Explanation:the forces cancel out each other