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3 years ago

All atoms would be more stable if they had a ____

Physics

1 answer:

Sunny_sXe [5.5K]3 years ago

8 0

Answer:

all atoms will be more stable if they a full valance shell or a full outer most shell or my teacher also tell us that the lucky number is 8 and if an atom has 8 valance electron it will be stable, like the noble gas

Explanation:

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A toy rocket moving vertically upward passes by a 2.0-m-high window whose sill is 8.0 m above the ground. The rocket takes 0.15

sveta [45]

Answer:

$v_i = 18.86 m/s$

Explanation:

As we know that the speed of the rocket is v1 and v2 at the bottom and top of the window

then we will have

$d = (\frac{v_1 + v_2}{2}) t$

$2 = (\frac{v_1 + v_2}{2})(0.15)$

$26.67 m/s = v_1 + v_2$

also we know that

$v_2 - v_1 = (-9.81)(t)$

$v_2 - v_1 = (-9.81)(0.15) = -1.47$

now we have

$v_2 = 12.6$

also we have

$v_1 = 14.1 m/s$

now if the sill of the window is at height 8 m from the ground then we have

$v_1^2 - v_i^2 = 2 a h$

$(14.1^2) - v_i^2 = 2(-9.81)(8)$

$v_i = 18.86 m/s$

8 0

4 years ago

When the rock is falling, how many forces are acting on the rock

Mashutka [201]

Answer:

gravity.

Explanation:

yes indeed gravity

4 0

3 years ago

Read 2 more answers

How is speed calculated

Brut [27]

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be in metres per second (m/s).

7 0

3 years ago

Would you be willing to travel to a star 10 light-years away and spend 5 years on the planet orbiting this star before returning

sweet-ann [11.9K]

Answer:

apparent distance = 0.447 light year

apparent time = 111.111 years

Explanation:

Given data

distance d= 10 light year

spend time = 5 years

travel v = 99.9% of speed light = 0.999c

to find out

Would you be willing to travel to a star 10 light-years

solution

we can say apparent distance

d1 = d( √(1-v²/c²)

d1 = 10 light year ( √(1-(0.999c)²/c²)

d1 = 10 light year ( √(1-(0.998)

d1 = 10 light year (0.045)

d1 = 0.447 light year

so apparent time is

t1 = t/ ( √(1-v²/c²)

t1 = 5 year / 0.045

t1 = 111.111 years

so we can say that human age is limited and no object move as like speed of light

8 0

3 years ago

Si un cuerpo adquiere una carga de -0,02 C, ha ganado o ha perdido electrones? Cuantos?

sammy [17]

Question :

If a body acquires a charge of -0.02 C, has it gained or lost electrons? Many?

Solution :

We know, charge gained is shown by negative sign.

Since, charged acquired is given as -0.02 C .

Therefore, it is body has gained electrons.

Now, number of electrons is given by :

$n = \dfrac{net\ charge}{charge \ on \ one \ electron}\\\\n = \dfrac{-0.02}{-1.60 \times 10^{-19}}\\\\n = 1.25\times 10^{17}$

Hence, this is the required solution.

7 0

3 years ago