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mixer [17]
3 years ago
13

What makes a balloon electrically charged?

Physics
1 answer:
Orlov [11]3 years ago
7 0

Answer:

When a rubber balloon is rubbed against human hair, electrons are transferred from the hair to the rubber, giving the balloon a net negative charge, and leaving the hair with a net positive charge. As the balloon is pulled away, the opposite charge on the hair causes it to be attracted to the balloon.

Explanation:

do u like my prophile pic

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Mr. Tolman believes that our universe is expanding, but with all of the gravitational force from the celestial bodies of space,
sattari [20]
The correct answer is A I believe but I may not be correct. Either A or B
8 0
3 years ago
Which is moving faster a car traveling 150 km in 3 hours or one traveling 100 km in 2 hours?
ki77a [65]
Neither they’re both moving the same . 150/3 = 50km
100/2 = 50km
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7 0
3 years ago
What is the speed of light in carbon disulphide if its refractive index is 1.628?
Marina CMI [18]
Refractive index (symbol n) is defined as the ratio of the velocity of light in a vacuum (symbol c) to the velocity of light in a medium (symbol v). The equation is n=c/v. In order to obtain the speed of light in carbon disulphide the above equation needs to be rearranged to make v the subject. This yields v=c/n. Plugging the numbers in yields a speed to 1.84x10^8 metres per second. 
6 0
3 years ago
Star A and Star B have measured stellar parallax of 1.0 arc second and 0.75 arc second, respectively. Which star is closer? How
zhuklara [117]

Answer:

Star A is closer than Star B

Explanation:

As we know that in parallax method of distance measurement the angle subtended by the star when it covers a distance of one Parsec arc length, it is known as parallax angle

Here we can say

angle = \frac{1 Parsec}{distance}

so we have

distance = \frac{1 Parsec}{angle}

so here we have

angle subtended by Star A = 1 arc sec

angle subtended by star B = 0.75 arc sec

now we have

distance for star A is given as

d_a = \frac{1 Parsec}{1} = 1 Parsec

distance of star B is given as

d_b = \frac{1 Parsec}{0.75} = 1.33 Parsec

So star A is closer than star B

7 0
4 years ago
What is longitudinal wave?​
nignag [31]

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Explanation:

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3 years ago
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