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asambeis [7]
3 years ago
6

The net electric charge of an amber rod which has been rubbed with fur is called negative Group of answer choices because amber

is an insulator by arbitrary convention so that the proton charge will be positive because like charges repel None of the above
Physics
1 answer:
bonufazy [111]3 years ago
3 0

Answer:

The right option is option E. None of the answer choices given are totally correct.

Explanation:

All insulators normally have an equal amount of positive and negative charges distributed on their surface.

The amber rod (an insulator) is called negative because after the coming together with fur (another insulator), the amber rod rubs off electrons from the fur onto itself and has an overall more negatively charged particles than positively charged particles on its surface.

The fur in turn becomes positive because it has more positive charges than negative on its surface.

So, the convention allows the now rubbed off amber rod to be called negative.

So, it is evident that none of the answer choices are totally correct, the right answer is more of a mix of some of the answer choices and more!

Hope this helps!!

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Setler79 [48]

Answer:

due to production of heat through friction

4 0
3 years ago
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A 190 g rock at 20°C is completely immersed in 600 g of water at 80°C. Which one of the following statements is true right after
Umnica [9.8K]

Rock is completely immersed in hot water. By the second law of thermodynamics, thermal energy or heat is transferred from substance with higher temperature to substance with lower temperature until they come to thermal equilibrium i.e. both at same temperature.

It is given here that rock is at 20°C which is at lower temperature than water at 80°C. ∴Heat or thermal energy flows from water to rock. So, right choice is-

A. The water gives the rock thermal energy and gets no thermal energy in return.

8 0
3 years ago
A wave is traveling at 241 m/s. It has a wavelength of 30.0 m. What is its frequency?
Feliz [49]

Answer:

A) 8.03Hz

Explanation:

f = V/λ

Where wavelength( λ )= 30m

Speed (V) =241m/S

f= 241/30=8.03Hz

3 0
3 years ago
The momentum of an object is 35 kg•m/s and it is travelling at a speed of 10 m/s.
Naddik [55]

Answer:

{ \bf{momentum = mass \times velocity}} \\  \\ { \tt{35 = m \times 10}} \\ { \tt{mass = 3.5 \: kg}}

4 0
2 years ago
Discuss the limitations of using the Doppler shift to determine an object's speed.
pantera1 [17]

Answer and Explanation:

Limitation of Doppler shift :

The Doppler impact is relevant when the speeds of the wellspring of sound and spectator are considerably less than the speed of sound. The movement of both the spectator and the source is along a similar straight line.When movement is not in straight line or velocity is not much less than speed of light then we can not use Doppler shift

This is the limitation of Doppler shift to determine the object distance

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