The correct option is d
<span>Weight changes depending on distance from the earth, mass does not.
Weight can be defined as the force exerted on an object due to the effects of gravity.
As we move far away from the Earth, the effects of gravity lessen and thus the weight decreases. (But the mass remains constant, because it only depends on the volume and density of the object)
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Answer:
dont you have to times it to get what you need
Explanation:
Answer:
False
Explanation:
It would be described as having a long period
here the answer is obvious.we know that the charge of electron is negative and all the substance contains electrons.but there is also another particle called proton which is also a fundamental particle.
As per the question,the surface of an object is positive.it means that some amount of electrons have been emitted by the object.
when the electron emission takes place from the surface of the object,the number of electrons is decreased .as the atom contains same number of protons and electrons making the whole atom neutral ,so, when electron is lost,there will more number of proton as compared to electrons.The surface gains a positive charge.
The surface becomes positive as generally the electrons present on the surface are less bound to the nucleus and can be easily escaped from the surface barrier.
Answer:
The third lowest frequency is 1489.27 Hz.
Explanation:
Given that,
Distance of person from one speaker= 4.50 m
Distance of person from the other = 3.80 m
The longest wavelength is the shortest frequency.
We need to calculate the difference between the speakers
The difference between the speakers d= 4.50-3.80 =0.7 m
We know that,
The longest wavelength is such that one wavelength
So, The third longest wavelength is
Put the value of d
We need to calculate the lowest frequency
Using formula of frequency
Hence, The third lowest frequency is 1489.27 Hz.
