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WINSTONCH [101]
3 years ago
15

Why does the originally neutral hair and balloon become charged

Physics
1 answer:
r-ruslan [8.4K]3 years ago
3 0

Answer: Because When two objects, such as your hair and the balloon rub together, one loses some of its electrons to the other. This makes one object positively charged and the other object negatively charged. This movement of the electrons causes the neutral object to get a low positive charge.

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A block slides down a frictionless inclined ramp. If the ramp angle is 17.0° and its length is find the speed of the block as it
SashulF [63]

Answer:

2.4\sqrt{L} where L is the length of the ramp

Explanation:

Let L (m) be the length of the ramp, and g = 9.81 m/s2 be the gravitational acceleration acting downward. This g vector can be split into 2 components: parallel and perpendicular to the ramp.

The parallel component would have a magnitude of

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We can use the following equation of motion to find out the final velocity of the book after sliding L m:

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What mass of silver will occupy a volume of 87.75 mL?<br>The density of silver is 10.49 g/mL.​
Anastaziya [24]

Answer:

The mass of silver that will occupy a volume of 87.75 mL is 920.5 grams.

Explanation:

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space. In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density=\frac{mass}{volume}

So the density of silver is 10.49 g / mL indicates that 10.49 g occupies a volume of 1 mL. Then a rule of three can be applied in the following way: if in 1 mL a mass of 10.49 g is occupied, in 87.75 mL how much mass will it occupy?

mass=\frac{87.75 mL*10.49 g}{1 mL}

mass= 920.5 g

<u><em> The mass of silver that will occupy a volume of 87.75 mL is 920.5 grams.</em></u>

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