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AysviL [449]
3 years ago
6

Which components of the atom has a positive charge

Physics
1 answer:
djyliett [7]3 years ago
7 0
Protons have a positive charge
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Explain how the density of a gas is different from the density of a liquid.
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Answer

The same number of particles in a gas spread further apart than in the liquid or solid states.

Explanation:

The same number of particles in a gas spread further apart than in the liquid or solid states. The same mass takes up a bigger volume. This means the gas is less dense. Density also depends on the material.

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If the electron e − and the positron e + both have rest energy 0.51 MeV, nd the minimum energy a particle of light γ (a photon)
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For Total energy and momentum to be conserved, the minimum energy of the photons released is equal to twice the rest mass energy of an electron that is  2 \times 0.51 MeV = 1.02 MeV

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4 years ago
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2 years ago
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if a ball is released from a height 80cm how long would it take the ball to reach the ground when g= 10m per seconds​
VLD [36.1K]

Answer:

The ball took 0.4 seconds

Explanation:

» From the second newton's equation of motion.

{ \boxed{ \tt{s = ut +  \frac{1}{2} {gt}^{2}  }}}

  • s is displacement, s = 80cm, s = 0.8 meters
  • u is initial velocity, u = 0 [ from rest ]
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{ \tt{0.8 = (0 \times t) + ( \frac{1}{2}  \times 10 \times  {t}^{2} )}} \\  \\ { \tt{0.8 = 5 {t}^{2} }} \\ { \tt{ {t}^{2} = 0.16 }} \\ { \tt{t =  \sqrt{0.16} }} \\  \\ { \underline{ \underline{ \tt{ \: time = 0.4 \: seconds \:  \: }}}}

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3 years ago
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Work is done when spring is extended or compressed. Elastic potential energy is stored in the spring. Provided inelastic deformation has not happened, the work done is equal to the elastic potential energy stored.

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