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Alenkinab [10]
3 years ago
9

As object has a charge of 4.5 c. did it gain or lose electrons

Physics
1 answer:
Tanya [424]3 years ago
3 0
The object lost electrons because one electron adds a negative to the object. <span />
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A horizontal line on a distance-time graph means the object is
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At rest because if the distance is not changing, then it is not moving any further, so it must not be moving! The time keeps going no matter what, so the distance, whether it is 0 m or 10,000 km, if the y is horizontal the distance does not change. 
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Explain how a form of<br> energy is used in daily life
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3 years ago
At a distance of 11 cm from a presumably isotropic, radioactive source, a pair of students measure 65 cps (cps = counts per seco
Alborosie

To solve the problem, it is necessary the concepts related to the definition of area in a sphere, and the proportionality of the counts per second between the two distances.

The area with a certain radius and the number of counts per second is proportional to another with a greater or lesser radius, in other words,

A_1*m=M*A_2

A_i =Area

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Our radios are given by

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R_2 = 20cm

m = 65cps

Therefore replacing we have that,

A_1*m=M*A_2

4\pi r_1^2*m = M * 4\pi R_2^2 M

r^2*m=MR^2

M = \frac{m*r^2}{R^2}

M = \frac{65*11^2}{20^2}

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Therefore the number of counts expect at a distance of 20 cm is 19.66cps

7 0
3 years ago
Which type of boundary is modeled?
Katena32 [7]
A is convergent
B is
7 0
3 years ago
True or false the refraction of a wave is how many wavelengths pass a fixed point each second
Ksenya-84 [330]
False. That description fits the wave's 'frequency'. 
It has nothing to do with refraction.
8 0
3 years ago
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