15 POINTS! Yes, more science... What kind of tool can you use to view atoms and molecules up close?

Answers

Answer 1

Answer: Generally, molecules are hard to see up close, that is why models are made. So that people can see the structure of atoms and how the nucleus looks.

Other then a model, an transmissional electron microscope is used to look at atoms up close.

Answer 2

Answer: Well, its a microscope pretty much. But they are called "electron microscopes". But yea just a microscope. ...... oh yeah also a scanning tunneling microscope :)

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A 4.8-kilogram ball moving at 8 m/sec to the right collides with a 1.4-kilogram ball at rest. After the collision, the 4.8-kilogram ball moves at 4.8 m/sec to the right. What is the velocity of the 1.4-kilogram ball?m/s

Answers

The final velocity of the 1.4 kg ball is 11.0 m/s to the right

Explanation:

We can solve this problem, by using the law of conservation of momentum: in fact, the total momentum of the two balls must be conserved before and after the collision. Therefore, we can write:

$p_i = p_f\nm_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2$

where:

$m_1 = 4.8 kg$ is the mass of the first ball

$u_1 = 8 m/s$ is the initial velocity of the first ball (taking right as positive direction)

$v_1 = 4.8 m/s$ is the final velocity of the first ball

$m_2 = 1.4 kg$ is the mass of the second ball

$u_2 = 0$ is the initial velocity of the second ball (it is at rest)

$v_2$ is the final velocity of the second ball

And solving the equation for v2, we find:

$v_2 = (m_1 u_1-m_1v_1)/(m_2)=((4.8)(8)-(4.8)(4.8))/(1.4)=11.0 m/s$

So, the 1.4 kg ball moves at 11.0 m/s to the right.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

Describe each of the three types of hazardous weather forecasts

Answers

Well, there can be a tornado that is very severe when hot and cold air mixes making air swirl and create a triangular shaped spinning air. There are lightning storms when lightning bolts come from the sky, and there are hurricanes when there are lots of rain coming towards your way due to change in climate such as global warming, it often occurs in humid places.

A spring stores 3500 j of energy when it is stretched 1.5 meters. What is the spring constant of this spring? A) 4667 N/m B) 778 N/m C) 3938 N/m D) 3111 N/m

Answers

As we know that spring potential energy is given by the formula

$U = (1)/(2)kx^2$

now it is given to us that

$U = 3500 J$

$x = 1.5 m$

now we will plug in data in above equation

$3500 = (1)/(2) k(1.5)^2$

$k = (2 * 3500)/(1.5^2)$

now we will have

$k = 3111 N/m$

Please help fast Which of the following statements is true of sound transmission through various mediums ?

A. Elastic solids prevent sound from being transmitted better than liquids

B. Gases conduct sound better than liquids

C.inselastic materials conduct sound better than elastic solids

D.sound insulators prevent from being transmitted better than elastic solids

Answers

Answer:

what did u get one that baby

How was the speed of light determined

Answers

Answer:

Speed of light = 3 * 10 ^8 m / s. Speed is related to the distance and time and so its unit is in meters and seconds. The speed of light value mentioned above is the value calculated in vacuum or air with the help of lasers.

But when it comes to water, refractive index has to be taken into account.The speed of light is faster in vacuum than other mediums.

Presently, the speed of light in a vacuum is defined to be exactly 299,792,458 m/s (approximately 186,282 miles per second). . An early experiment to measure the speed of light was conducted by Ole Romer, a Danish physicist, in 1676. Using a telescope, Ole observed the motions of Jupiter and one of its moons, Io

Direct current is produced byan electric motor
an armature
a solenoid
a battery

Answers

the answer is a battery

The answer is a battery

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