Answer:
<div></div>
Explanation:
The <div></div> tag allows you to build containers to the text that you want to include in your html
Answer:
True is the correct answer for the above question.
Explanation:
- When a user wants to put the chart in MS- excel software, then he needs to set the cell for the chart for this, he can press the control key and select all the cells on which he wants to place the chart.
- The above question also states that when a user wants to select the cell for chart then he can do this by pressing the Ctrl key while selecting the cell which is the correct statement which is described above. Hence true is the correct answer to the above question.
Answer:
a. the mass of the planet
Explanation:
Doppler's effect explains the shift in the frequency of light or sound wave coming from an object as it moves closer or farther from the observer. A real life example is passing of an ambulance. As it approaches we can hear high pitched siren (increased frequency) and as it moves away we can hear a low pitch siren (decreased frequency). The same technique is used in astronomy to find the movement of the celestial objects with respect to Earth.
Option b, c, and d can be found out using this method. As the planet will rotate, one end will move towards the Earth and opposite one away from Earth. This will show the frequency shift which can be used to calculate to give us the rotation period and size of the planet. Also, as the planet will move in their orbit, their positional change will result in frequency shift. Using that we can find out the orbital period and size of the orbit. But we can not find out the mass of a planet. We can find the mass using Newton's law of gravitation.
