Two trains, A and B are moving at a speed of 20 km per hour
2 answers:
Answer:

Explanation:
As the trains are clearly in motion, we can understand the these trains possess kinetic energy, which is by virtue of a motion of a body.
Answer:
type of energy that two train have are kinetic energy
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<h3>
Five Examples of Salts </h3>
- Sodium Chloride.
- Sodium chloride (NaCl) is the most common type of salt in our lives.
- Potassium Dichromate. •
- Potassium dichromate (K2Cr2O7) is an orange-colored salt composed of potassium, chromium and oxygen.
- Calcium Chloride.
- Sodium Bisulfate.
- Copper Sulfate.
Answer:
The volume of the Kleenex box is 64 cm.
Explanation:
Volume = B x W x H
So: V = 8cm x 2cm x 4cm = 64cm
The correct answer is C) A substance changes color when heated, but changes back when cooled. Hope this helps.
250 --> 125 --> 62.5 --> 31.25
each arrow equals one half life, so 3 half lives
14 days/ 3 half lives =
4.67 days = half life
57.1g * 6.022*10^23 / 22.9 * 2 = 7.51*10^23 molecules