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murzikaleks [220]

2 years ago

8

What happens to the atomic number of an atom when the number of neutrons in the nucleus of that atom increases? a It decreases b

It increases c It doubles d It remains the same

1 answer:

kupik [55]2 years ago

8 0

Answer:

It remains the same

Explanation:

It remains the same. This is because the number of protons doesn't change and the number of protons determines the atomic number.

You might be interested in

What is the difference between an electrolyte and a nonelectrolyte

Pepsi [2]

Answer:

The difference between the Electrolyte and Non-Electrolyte are given in the explanation part.

Explanation:

ELECTROLYTES are salts or molecules which ionize in solution fully.
Electrolyte solutions thus conduct electricity readily.

whereas

NON ELECTROLYTES in water do not dissociate from ions,
non-electrolyte solutions do not conduct electricity.

7 0

4 years ago

Describe the arrangement, motion, and energy of the molecules in the solid, liquid, and gas phases of water.

Ad libitum [116K]

In a solid the atoms are tightly packed together meaning that they vibrate in place slowly. In a liquid the energy gets faster and they have enough space between each other where they can move past one another. And in a gas the particles are moving very fast and they are spread out even further than a liquid.

3 0

3 years ago

50 newton horizontal force to a 25 kilogram box, pushing it 6 meters

hodyreva [135]

If you push something with 50 N of force and your hand moves through 6 meters, then you've done (50 x 6) = 300 Joules of work.

It doesn't matter what the mass of the object is, and it doesn't even matter whether or not there's friction either.

7 0

3 years ago

Steam at 0.6 mpa, 200 oc, enters an insulated nozzle with a velocity of 50 m/s. It leaves at a pressure of 0.15 mpa and a veloci

vladimir1956 [14]

Answer:

x2 = 0.99

Explanation:

from superheated water table

at pressure p1 = 0.6MPa and

temperature 200 degree celcius

h1 = 2850.6 kJ/kg

From energy equation we have following relation

$\dot m(h1 + \frac{v1^2}{2} +gz1) + Q = \dot m(h2 + \frac{v2^2}{2} +gz1) + W$

$\dot m(h1 + \frac{v1^2}{2} = \dot m(h2 + \frac{v2^2}{2}$

$(h1 + \frac{v1^2}{2} = (h2 + \frac{v2^2}{2}[tex]2850.6 + \frac{50^2}{2} *\frac{1 kJ/kg}{1000 m^2/s^2} = h2 + \frac{600^2}{2} *\frac{1 kJ/kg}{1000 m^2/s^2}$

h2 = 2671.85 kJ/kg

from superheated water table

at pressure p2 = 0.15MPa

specific enthalpy of fluid hf = 467.13 kJ/kg

enthalpy change hfg = 2226.0 kJ/kg

specific enthalpy of the saturated gas hg = 2693.1 kJ/kg

as it can be seen from above value hf>h2>hg, so phase 2 is two phase region. so we have

quality of steam x2

h2 = hf + x2(hfg)

2671.85 = 467.13 +x2*2226.0

x2 = 0.99

5 0

3 years ago

You are on the roof of the physics building 46.0 meters above theground. Your physics professor, who is 1.8 meters tall, is walk

Kisachek [45]

Answer:

The professor should be $d=3.6m$ away of the impact point, walking towards it.

Explanation:

We will calculate how much time an egg takes to fall from the initial position to the final position, and then use that time to calculate how much distance the professor moved.

We use the equation for accelerated motion (on the vertical direction):

$y_f=y_i+v_{0y}t+\frac{a_yt^2}{2}$

Since it departs from rest and the acceleration is that of gravity, we have:

$y_f=y_i+\frac{gt^2}{2}$

Which means:

$t=\sqrt{\frac{2(y_f-y_i)}{g}}$

Having the ground as reference and taking the upwards direction as positive, for our values we have:

$t=\sqrt{\frac{2(1.8m-46m)}{-9.8m/s^2}}=3s$

And in that time the professor moved $d=vt=(1.2m/s)(3s)=3.6m$

8 0

4 years ago