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Bas_tet [7]
3 years ago
10

A student charges a balloon and then brings it near a metal sphere hanging from the

Physics
2 answers:
Neko [114]3 years ago
8 0

Answer: B

Explanation:

The balloon will pick up stray electrons, so it will become negatively charged. Since it is attracted to the metal sphere, the sphere must be positively charged.

Hunter-Best [27]3 years ago
3 0

Answer:

B

Explanation:

the balloon has a negative charge and the metal sphere has a positive charge

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A large ant is standing on the middle of a circus tightrope that is stretched with tension T_s. The rope has mass per unit lengt
k0ka [10]

Answer:

A = \frac{g \lambda^2 \mu}{4\pi^2 T_s}

Explanation:

As we know that the speed of the wave in string is given as

v = \sqrt{\frac{T_s}{\mu}}

now we will have

frequency of the wave is given as

f = \frac{v}{\lambda}

f = \frac{1}{\lambda}\sqrt{\frac{T_s}{\mu}}

now if the ant will feel weightlessness then we will have

mg = m\omega^2 A

so we will have

A = \frac{g}{\omega^2}

A = \frac{g}{4\pi^2 f^2}

A = \frac{g \lambda^2 \mu}{4\pi^2 T_s}

3 0
4 years ago
Physicists often measure the momentum of subatomic particles moving near the speed of light in units of MeV/c, where c is the sp
maxonik [38]

Answer:

kg m/s

Explanation:

e = Charge = C

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\dfrac{MeV}{c}=\dfrac{e\times V}{c}\\\Rightarrow \dfrac{MeV}{c}=\dfrac{C\times \dfrac{N}{C}\times m}{m/s}\\\Rightarrow \dfrac{MeV}{c}=Ns\\\Rightarrow \dfrac{MeV}{c}=kg\times \dfrac{m}{s}\times s\\\Rightarrow \dfrac{MeV}{c}=kg\cdot m/s

The unit of MeV/c in SI fundamental units is kg m/s

5 0
3 years ago
In abiding by the code of ethics, forensic scientists must possess what characteristics or ethics?
bixtya [17]
Scientists must have an unbiased type of investigation. These type of science requires three major characteristics for it to be functional and sticked to the truth: they must be impartial, accuarate and truthful. Without these characteristics there is no way forensic science must be treated as science. 
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4 years ago
Which of the following actions will keep the gravitational force between two objects unchanged?
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Answer:

increasing the temperature of the object

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