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3 years ago

How does a rubber rod become negatively charged through friction?

Physics

1 answer:

mojhsa [17]3 years ago

3 0

Answer:

c. It is rubbed with another object, and electrons move onto the rod.

Explanation:

A rubber rod is negatively charged through friction when gains electrons, this occurs when electrons are transferred from another material by simple contact between them. When these two materials are rubbed, the difference in electronic affinity causes one of the materials to be positively charged and the other negatively charged.

You might be interested in

Write one use of magnetic force and frictional force

grandymaker [24]

Answer:

<em>1.Magnetic Force - Used in cranes to separate metal junk from junkyards.</em>

<em>2.Frictional Force- Helps us to walk.</em>

5 0

2 years ago

A pendulum on plant X is 0.25 meters long and the period is 4 seconds. What is “g” on Planet X?

Monica [59]

Answer:

The value of g = 0.6168 m/s².

Explanation:

Given that,

On a planet X,

Length of the pendulum(L) = 0.25 meters,

Time period of the pendulum(T) = 4 seconds.

We have to find the 'g' value on the planet.

The 'g' value on a planet can be found by a pendulum with help of the formula,

T = 2π × $\frac{\sqrt{L} }{\sqrt{g} }$

From this, g = 4π² × $\frac{L}{T^{2} }$

Using the above formula and substituting the values,we get,

g = 0.6168 m/s².

7 0

3 years ago

In this diagram, which force is represted by L?

Dmitry [639]

Answer is a) the force caused by the wend nag encountering wind and air.

8 0

3 years ago

The Bohr model below represents which answer Choice

Anton [14]

Answer:

Na⁺

Explanation:

In the given atom:

Number of protons = 11

Number of neutrons = 12

So, the number of electrons = 10

The number of protons within an atom is used to determine the kind of atom we have been given.

Since the number of protons is the same as the atomic number, here the atomic number is 11 and this is Sodium .

In this sodium atom, the number of protons is more than the number of electrons;

Charge = number of protons - number of electrons = 11 - 10 = +1

So, we have a Na⁺

4 0

3 years ago

In Applied Life Data Analysis (Wiley, 1982), Wayne Nelson presents the breakdown time of an insulating fluid between electrodes

muminat

Answer:

18.375

Explanation:

Mean = total of measured values / no of elements of sample

Total = .15 + .89 +1.11+1.46 +2.78 + 3.12 + 4.30 + 4.59 + 4.92 + 6.42 + 7.20+8.04+8.21+12.13+31.86+32.53+33.82+36.60+ 72.99

= 273.03

Mean = 273 .03 / 19

= 14.37

( .15 - 14.37 )² +( 0.89 - 14.37 )²+( 1.11- 14.37 )²+( 1.46 - 14.37 )²+( 2.78 - 14.37 )²+( 3.12 - 14.37 )²+( 4.30 - 14.37 )²+( 4.59 - 14.37 )²+( 4.92 - 14.37 )²+( 6.42 - 14.37 )²+( 7.20 - 14.37 )²+( 8.04 - 14.37 )²+( 8.21 - 14.37 )²+( 12.13 - 14.37 )²+( 31.86 - 14.37 )²+( 32.53 - 14.37 )²+( 33.82 - 14.37 )²+( 36.60 - 14.37 )²+( 72.99 - 14.37 )²

= 202.20 +181.71+ 175.82 + 166.66+ 134.32 + 126.56 + 101.40 +95.64 + 89.30 +63.20 +51.40 +40.06 +37.94+5.01 +305.90 +329.78 +378.30 +494.17 +3436.30

=6415.67

Standard deviation =

$\sqrt{\frac{6415.67}{19} }$

= 18.375

5 0

3 years ago