Ask question

Ask question

All categories

Oduvanchick [21]

4 years ago

15

According to the nebular theory the solar system formed from

1 answer:

KiRa [710]4 years ago

4 0

The best and most correct answer among the choices provided by the question is d) all of the above<span>.
</span>
According to the nebular theory the solar system formed from<span> accretion ,a large, thin cloud of dust and gas and colliding planetestimals.
</span>
Hope my answer would be a great help for you.
If you have more questions feel free to ask here at Brainly.

You might be interested in

calculate the gravitational force in between two objects of mass 25 kg and 20 kg if distance between them is 5m

sladkih [1.3K]

Answer:

<em><u>Gravitational</u></em><em><u> </u></em><em><u>force</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>1</u></em><em><u>.</u></em><em><u>3</u></em><em><u>3</u></em><em><u> </u></em><em><u>×</u></em><em><u> </u></em><em><u>1</u></em><em><u>0</u></em><em><u>^</u></em><em><u>-</u></em><em><u>9</u></em><em><u> </u></em><em><u>N</u></em>

Explanation:

$force = \frac{GMm}{ {r}^{2} }$

${ \sf{ = \frac{6.67 \times {10}^{ - 11} \times 25 \times 20 }{ {5}^{2} } }} \\ \\ = { \sf{1.33 \times {10}^{ - 9} \: newtons }}$

5 0

3 years ago

The speedometer of your car measures average speed?

Ronch [10]

The speedometer of a car reads instantaneous speed

6 0

4 years ago

Where was Malala attacked <br> Where was

Slav-nsk [51]

Answer:

Swat Valley

Explanation:

not sure but im guessing its on swat valley! not sure tho :)

4 0

3 years ago

in what distance can a 1500kg automobile be stopped if the brake is applied when the speed is 20m/s and the coefficient of slidi

natali 33 [55]

1) The braking force is provided by the frictional force, which is given by:

$F_f=\mu m g$

where

$\mu=0.7$ is the coefficient of friction

m=1500 kg is the mass of the car

$g=9.81 m/s^2$ is the gravitational acceleration

Substituting numbers into the equation, we find

$F_f= (0.7)(1500 kg)(9.81 m/s^2)=10301 N$

2) The work done by the frictional force to stop the car is equal to the product between the force and the distance d:

$W=-F_fd$ (1)

where we put a negative sign because the force is in the opposite direction of the motion of the car.

3) For the work-energy theorem, the work done by the frictional force is equal to the variation of kinetic energy of the car:

$\Delta K=K_f -K_i =W$ (2)

The final kinetic energy is zero, so the variation of kinetic energy is just equal to the initial kinetic energy of the car:

$\Delta K=-K_i=-\frac{1}{2}mv^2=-\frac{1}{2}(1500 kg)(20 m/s)^2=-300000 J$

4) By equalizing eq. (1) and (2), we find the distance, d:

$-K_i = -Fd$

$d=\frac{K_i}{F}=\frac{300000 J}{10301 N}=29.1 m$

8 0

3 years ago

A sled with a mass of 20 kg is sliding along the snow with a velocity of 5 m/s. What is the momentum of the sled?

DiKsa [7]

Answer:

100kgms⁻¹

Explanation:

Given parameters:

Mass of the sled = 20kg

Velocity of the sled = 5m/s

Unknown:

Momentum of the sled = ?

Solution:

The momentum of a body is the quantity of motion such a body possesses. Due to this;

Momentum = mass x velocity

Now insert the parameters and solve;

Momentum = 20 x 5 = 100kgms⁻¹

8 0

3 years ago