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3 years ago

3. Which subatomic particle(s) determines an atom's atomic number?

Physics

1 answer:

const2013 [10]3 years ago

7 0

Answer:

The remainder of the hydrogen atom's mass comes from the positively charged proton. The atomic number of an element is the number of protons in its nucleus. Neutrons are neutral particles having a mass slightly greater than that of the proton. Different isotopes of the same element contain the same number of protons but differing numbers of neutrons.

Explanation:

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Damm [24]

Answer:

a) 500 m

b) 50 s

c) speed= distance/time= 500/50= 10 m/s

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3 years ago

. What type of stress is tension and at what type of plate boundary is it found?

Mrac [35]

The three main types of stress go along with the three types of plate boundaries: compression is common at convergent boundaries, tension at divergent boundaries, and shear at transform boundaries. Hope this helps

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3 years ago

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alayn h uderstands the half life of a certain substance is 90days. how long would it take for 80lbs of her substance to be reduc

yan [13]

Answer:

135 days...............

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3 years ago

Which of the following is NOT a correct statement?*

lozanna [386]

AnswerAmontons's law. If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. ... If the gas volume is decreased, the container wall area decreases and the molecule-wall collision frequency increases, both of which increase the pressure exerted by the gas (Figure 1).:

Explanation:

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3 years ago

Help me please

agasfer [191]

Answer:

For a velocity versus time graph how do you know what the velocity is at a certain time?

Ans: By drawing a line parallel to the y axis (Velocity axis) and perpendicular to the co-ordinate of the Time on the x axis (Time Axis). The point on the slope of the graph where this line intersects, will be the desired velocity at the certain time.

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How do you know the acceleration at a certain time?

$Ans: We\ know\ that\ acceleration = \frac{Final\ velocity-Initial\ Velocity}{Time\ taken}$

Hence,

By dividing the difference of the Final and Initial Velocity by the Time Taken, we could find the acceleration.

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How do you know the Displacement at a certain time?

Ans: As Displacement equals to the area enclosed by the slope of the Velocity-Time Graph, By finding the area under the slope till the perpendicular at the desired time, we find the Displacement.

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3 years ago