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3 years ago

Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below.

Physics

1 answer:

yawa3891 [41]3 years ago

7 0

Answer:

B: The colors of light emitted from heated atoms had very specific energies.

Explanation:

In Thompson's model of an atom the atom is said to be constituted of electrons which are surrounded by a haze of positive charge in order to balance the electrons' negative charges. It is also called plum prodding model because of negatively charged plums which are surrounded by the positively charged pudding.

Now, as the electrons move from higher to lower energy levels a photon which is a particle of light will be given off.

Thus, the correct answer is option B

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What would happen if brains weren't flexible

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3 years ago

A rope passes over a fixed sheave with both ends hanging straight down. The coefficient of friction between the rope and sheave

Oliga [24]

Answer:3.51

Explanation:

Given

Coefficient of Friction $\mu =0.4$

Consider a small element at an angle \theta having an angle of $d\theta$

Normal Force $=T\times \frac{d\theta }{2}+(T+dT)\cdot \frac{d\theta }{2}$

$N=T\cdot d\theta$

Friction $f=\mu \times Normal\ Reaction$

$f=\mu \cdot N$

and $T+dT-T=f=\mu Td\theta$

$dT=\mu Td\theta$

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$\int_{T_2}^{T_1}\frac{dT}{T}=\int_{0}^{\pi }\mu d\theta$

$\frac{T_2}{T_1}=e^{\mu \pi}$

$\frac{T_2}{T_1}=e^{0.4\times \pi }$

$\frac{T_2}{T_1}==e^{1.256}$

$\frac{T_2}{T_1}=3.51$

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3 years ago

What is the mass of a neutron?

Anastaziya [24]

Answer:

Explanation:

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2 years ago

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A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity ofthe ball the instant befo

Sergeeva-Olga [200]

Answer: The velocity of the ball is 30.0 m/s

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3 years ago

a cyclist must travel 800 km. how many days will the trip take if the cyclist travels 8/h day at an average speed of 16km/h

sergey [27]

It would b 6 days and 6 hours
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So 800/128 =6.25 which converts to 6 days and 6 hours.

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3 years ago

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