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Alona [7]
3 years ago
8

The first model of the atom was developed through

Physics
2 answers:
Ilya [14]3 years ago
7 0
It was developed through Democritus who was a greek philosopher.

Hope this helps


padilas [110]3 years ago
3 0

The correct answer is C. thinking about the smallest particles of matter without experimenting.

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According to the Doppler affect what happens when a light surfaceMoves further away from an observer
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When you bent the plastic ruler, what did you observe in its size? ​
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The size will increase.

Explanation:

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3 years ago
Ryan is driving home from work and notices a deer leaping onto the road about 25 m in front of his car. He immediately applies t
Anvisha [2.4K]

Answer:

mu = 0.56

Explanation:

The friction force is calculated by taking into account the deceleration of the car in 25m. This can be calculated by using the following formula:

v^2=v_0^2+2ax\\

v: final speed = 0m/s (the car stops)

v_o: initial speed in the interval of interest = 60km/h

    = 60(1000m)/(3600s) = 16.66m/s

x: distance = 25m

BY doing a the subject of the formula and replace the values of v, v_o and x you obtain:

a=\frac{v^2-v_o^2}{2x}=\frac{0m^2/s^2-(16.66m/s)^2}{2(25m)}=-5.55\frac{m}{s^2}

with this value of a you calculate the friction force that makes this deceleration over the car. By using the Newton second's Law you obtain:

F_f=ma=(1490kg)(5.55m/s^2)=8271.15N

Furthermore, you use the relation between the friction force and the friction coefficient:

F_f= \mu N=\mu mg\\\\\mu=\frac{F_f}{mg}=\frac{8271.15N}{(1490kg)(9.8m/s^2)}=0.56

hence, the friction coefficient is 0.56

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3 years ago
How many significant figures does the number 91010.0 have?
kirza4 [7]

Answer:

6 (six)

Explanation:

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3 years ago
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