Answer: An object's motion can be changed by unbalanced forces. Balanced forces do not change the motion of an object.
The motion of an object acted on by a force depends partly on the strength of the push or pull. The stronger the push or pull, the faster the object will move. For example, the father in the picture below is pushing his daughter in a swing. When he uses more force to push, the swing moves higher.
Explanation:
There's supposed to be a blank in the statement, where the answer is supposed to be inserted.
The question is supposed to say: "A wave is a disturbance that carries ______ from one place to another through matter or space".
To answer the question, write the word "<em>energy</em>" in the blank.
D) all of the above is the answer
Well, at first glance I'd be tempted to say all of them. The C "force" is why weather maps show winds blowing parallel to isobars and thus around centres of high and low pressure. (You'd expect, or at least I would, that air would flow from high to low pressures, not round them ... )
Penghitungan intensitas suara dengan satuan desibel menggunakan rumus "10 log x" yang berarti setiap 10 desibel akan menghasilnya bunyi dengan intensitas 10x lipat, 20 desibel = 100 kali lipat, dan seterusnya. Rumus yang dipakai untuk soal ini adalah:
<span>TI2 = TI1 − 10 log ( <span>r2</span>/<span>r1</span> )<span>2
</span></span>Intensitas suara 2= intensitas suara 1 + 10 log (lokasi 2/lokasi 1)
Intensitas suara 2= 50dB + 10 log 50m/3m = 50db + 10 log 16.7= 62.21dB