Answer:
D
Explanation:
The wavelength of A falls in the range of 700 nanometers to 1 millimeter. It is Infra red
The wavelength of B falls in the range of 450 nanometers to 740 nanometers. It is visible light
The wavelength of C falls in the range of 10 nanometers to 400 nanometers. It is Ultraviolet.
The wavelength of D falls in the 0.01 nanometers to 10 nanometers. It is x ray.
Answer:
B. A system cannot take in additional matter.
Explanation: The total amount of energy in the universe remains constant, it can merely change from one form to another.
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Answer:
a. The object will attract the glass rod.
b. The object will repel the glass rod.
Explanation:
a. When you rub a plastic rod with wool, it becomes negatively charged. This is because the wool material loses some of its electrons to the plastic rod. The wool becomes positively charged while the plastic rod becomes negatively charged.
Hence, for an object to repel the negatively charged plastic rod, it must also be negatively charged. This is because objects with like charges repel one another.
On the other hand, when you rub a glass rod with a silk material, it becomes positively charged. This is because the glass rod loses its electrons to the silk material. The silk material then becomes negatively charged, while the glass rod becomes positively charged.
Therefore, the negatively charged object will attract the already positively charged glass rod.
b. For an object to attract a negatively charged plastic rod, then it must be positively charged, since unlike charges attract.
So, a positively charged object will repel the negatively charged glass rod.
Answer:The electric current
Explanation:
The ans is A. 355 m/s as temperature is above stp
