1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
prisoha [69]
3 years ago
10

I NEED IT CORRECT OR ILL FAIL MY COURSE:(

Physics
2 answers:
USPshnik [31]3 years ago
7 0

Answer:

Gravitational forces brought together several moon-sized bodies, called planetesimals, to form larger bodies that became planets.

Explanation:

lilavasa [31]3 years ago
5 0
<span>What role did gravity play in the formation of the planets?
A.
Gravitational forces brought together several moon-sized bodies, called planetesimals, to form larger bodies that became planets.</span>
You might be interested in
A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it
Tems11 [23]

Answer:

5.4 ms⁻¹

Explanation:

Here we have to use conservation of energy. Initially when the stick is held vertical, its center of mass is at some height above the ground, hence the stick has some gravitational potential energy. As the stick is allowed to fall, its rotates about one. gravitational potential energy of the stick gets converted into rotational kinetic energy.

L = length of the meter stick = 1 m

m = mass of the meter stick

w = angular speed of the meter stick as it hits the floor

v = speed of the other end of the stick

we know that, linear speed and angular speed are related as

v = r w\\w = \frac{v}{r}

h = height of center of mass of meter stick above the floor = \frac{L}{2} = \frac{1}{2} = 0.5 m

I = Moment of inertia of the stick about one end

For a stick, momentof inertia about one end has the formula as

I = \frac{mL^{2} }{3}

Using conservation of energy

Rotational kinetic energy of the stick = gravitational potential energy

(0.5) I w^{2} = mgh\\(0.5)(\frac{mL^{2} }{3}) (\frac{v}{L} )^{2} = mgh\\(0.5)(\frac{v^{2} }{3}) = gh\\(0.5)(\frac{v^{2} }{3}) = (9.8)(0.5)\\v = 5.4 ms^{-1}

7 0
3 years ago
Group elements number 11 to 20 as either metallic, non metallic or metalloid.​
bija089 [108]

Answer:

The elements are grouped into the different substances by color. As you can see, Lithium, Beryllium, Sodium, Magnesium, Aluminum, Potassium, and Calcium are metals out of the first 20 elements.

Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorus, Sulfur, Chlorine, and Argon, are non-metals within the first 20 elements.

Boron and Silicon count as Metalloids in the Periodic Table (properties of both metals and non-metals)

reference- socatric q and a

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the following ocean motions are powered by the wind? waves tides surface currents deep ocean currents
Effectus [21]

At the entrance of most beaches, there is a bulletin board with notices about water conditions: maybe a faded sign warning about rip currents and a list of this week's tide tables. Most people pass them by without a second thought, but if you want to enter the ocean, it is important to know its movements, whether to avoid being caught in a riptide or to figure out when the waves will be at their best.


Hope this helps


3 0
3 years ago
Read 2 more answers
A person is riding on a Ferris wheel. When the wheel makes one complete turn, the net work done on the person by the gravitation
lara31 [8.8K]

Answer:

0

Explanation:

m = Mass of person

g = Acceleration due to gravity = 9.81 m/s²

d = Vertical height from the ground

F = Force = Weight = mg

Net work done would be

W_n=W_{up}+W_{down}\\\Rightarrow W_n=Fdcos180+Fdcos0\\\Rightarrow W_n=-mgd+mgd\\\Rightarrow W_n=0

Hence, the work done on the person by the gravitational force is 0

7 0
3 years ago
Two horses are pulling a box in two different directions as shown in the below image. The image shows one 30.0 N force due north
Novay_Z [31]

Explanation:

'What is the magnitude of the force needed to stop the horses and bring the box into equilibrium?' ≈42N; according to the vectors rules.

'Where would you locate the rope to apply the force?' - in point D.

PS. zoom out the attached picture.

4 0
3 years ago
Other questions:
  • The number of significant figures on the measurement 0.050010 kg id
    6·1 answer
  • what are the various ways in which lithospheric plates interact with each other as they move around on a dynamic earth??
    5·1 answer
  • If a gasoline engine has an efficiency of 21 percent and losses 780 J to the cooling system and exhaust during each cycle, how m
    13·1 answer
  • 50 g of liquid Y at 10 Celcius and 200 g of liquid Y at 40Celcius are mixed. Final temperature of the mixture is measured as 15
    12·1 answer
  • Please help on this one
    13·1 answer
  • As more lamps are put into a series circuit, the overall current in the power sourceA) increases.B) decreases.C) stays the same.
    9·1 answer
  • If 0.5 A is flowing through a household light
    5·1 answer
  • How did Robert Whittaker change classification?
    12·2 answers
  • a horizontal force of 300 N is needed to push a crate along the floor at constant speed. What is the friction force on the crate
    14·1 answer
  • In the ballistic pendulum experiment, a bullet of mass 0.06 kg is fired
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!