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kolezko [41]
3 years ago
9

ASAP I’m timed on this so help would really be appreciated :)

Physics
1 answer:
Leni [432]3 years ago
5 0
We can’t help if it’s a test only for homework.
You might be interested in
19
Anettt [7]

Proton: Its electrical charge is +1, its mass is 1, it's found in the nucleus

Neutron: Its electrical  charge is 0, its mass is 1, it's found in the nucleus

Electron: Its electrical charge is -1, its mass is negligible, it's found outside the nucleus

Explanation:

Atoms consist of three types of particles:

  • Proton: the proton is found in the nucleus of the atom, and it has a positive electric charge, equal to +1.6\cdot 10^{-19}C (expressed in units of fundamental charge, it has a charge of +1). Its mass is 1.67\cdot 10^{-27}kg, while its mass expressed in atomic mass units is 1 a.m.u
  • Neutron: the neutron is also found in the nucleus of the atom, and it has no electric charge. Its mass is similar to the mass of the proton (slightly larger), and neutrons and protons are held together in the nucleus by the presence of the strong nuclear force
  • Electron: the electron orbits around the nucleus, far away from it. It has negative electric charge, opposite to that of the proton (-1.6\cdot 10^{-19}C, or -1 in units of fundamental charge). Its mass is much lower than that of the proton, approximately 1800 times smaller, so it can be considered as negligible.

Learn more about atoms:

brainly.com/question/2757829

#LearnwithBrainly

8 0
4 years ago
In reaching her destination, a backpacker walks with an average velocity of 1.20 m/s, due west. This average velocity results, b
GaryK [48]

Answer:

x_2 = 648.46\ m

Explanation:

given,

Average velocity due west =  1.20 m/s

case 1

Distance moved in west, x₁ = 5.63 km

speed due west, v₁ = 2.33 m/s

Case 2

Distance moved in east = x₂

speed due east, v₂ = 0.374 m/s

total distance = x₁ + x₂ = 5.62

total time = t₁ + t₂ = 5630/2.33 + x₂/0.374

now,

average\ velocity = \dfrac{total\ distance}{total\ time}

-1.20= \dfrac{-5630 + x_2}{\dfrac{5630}{2.33}+\dfrac{x_2}{0.374}}

negative sign is used because we want the distance in east but velocity is in west.

- 2900 - 3.21 x_2 = -5630 + x_2

-4.21 x_2 = -2730

x_2 = 648.46\ m

The distance she walked in east is equal to 648.46 m

7 0
3 years ago
The temperature of water in a beaker is 45°C. What does this measurement represent
andrezito [222]
Based on my information, this would actually be representing "the average kinetic energy of water particles". So, as you take notice that where this temperature is being located, and also, how this would be 45°C, this would make more sense for this to be representing as <span>the average kinetic energy of water particles.</span>
3 0
3 years ago
Read 2 more answers
How many strings of length 10 over the alphabet (a, b, c, d] have at least one b somewhere in the string?
Lapatulllka [165]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is  B

Explanation:

   The number  of alphabet is  n= 4  (a , b , c , d )

Generally the total  number of  string of length 10 over the 4 alphabets is  

     N  =  4^{10}

Gnerally the number of string of length 10 that does not include b is  

     T =  3^{10}    

Generally the number of strings of length 10 over the 4  alphabets that have at least one alphabet b  somewhere in the string is  

        G  =  N - T

=>    G  =  4^{10} -  3^{10}

8 0
3 years ago
An object moving north with an initial velocity of 14m/s accelerates 5m/s squared. What is the final velocity of the object?
OLEGan [10]
The final velocity of the object is 16m\s.
Hope this helps! :)
6 0
3 years ago
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