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
Darya [45]
3 years ago
13

What forces causes a star to form from a nebula?

Physics
1 answer:
Gemiola [76]3 years ago
5 0
When a cloud collapses it forms<span> a </span>star<span> and disk</span>
You might be interested in
Find the initial velocity of a ball that has a final velocity of 17.9 m/s, west after it accelerated at 63.7 m/s2, west for 0.21
Musya8 [376]

Explanation:

Taking west to be positive, given:

v = 17.9 m/s

a = 63.7 m/s²

t = 0.21 s

Find: v₀

v = at + v₀

17.9 m/s = (63.7 m/s²) (0.21 s) + v₀

v₀ = 4.52 m/s

The initial velocity is 4.52 m/s west.

5 0
3 years ago
What is the coldest part of the cat’s body?
Nina [5.8K]

Answer:

It Depends Cat is indoor or outdoor But As per the body part concern that  i will Considered around the neck but Temperature Remain the same which i Analyzed too

Explanation:

A cat's normal body temperature can range from 100.5 to 102.5 degrees. Because 101.5 degrees is right in the middle, it's often referred to as a “normal” body temperature. Being that their body temperature is higher than ours, they can also tolerate higher temperatures (provided they have access to water).

3 0
3 years ago
If a car skids 66 ft on wet concrete, how fast was it moving when the brakes were applied? (Round your answer to the nearest who
Sonbull [250]

Answer:

If a car skids 66 ft on wet concrete, it will move at 243 ft/s when the brake is applied.

Explanation:

To determine how fast the car was moving, after skidding, the formula below is used:

V = √32*fd

V is the car's speed (ft/s)

d is skid length (ft) = 66 ft

f is the coefficient of friction determined by the material the car was skidding on.

Coefficient of friction for wet concrete is 0.65

V = √32*fd

V = √32 *0.65* 66

V = 242.679 ft/s ≅ 243 ft/s (nearest whole number)

If a car skids 66 ft on wet concrete, it will move at 243 ft/s when the brake is applied.

8 0
4 years ago
Two engineering students, John with a weight of 96 kg and Mary with a weight of 48 kg, are 30 m apart. Suppose each has a 0.04%
djyliett [7]

Answer:

6.8370869499\times 10^{20}\ N

Explanation:

N_A = Avogadro's number = 6.022\times 10^{23}

e = Charge of electron = 1.6\times 10^{-19}\ C

k = Coulomb constant = 8.99\times 10^{9}\ Nm^2/C^2

Z = Atomic number of water = 18

M = Molar mass of water = 0.018 kg/mol

m = Mass of person

The charge is given by

q=imbalance\times n\times e

Total number of protons and electrons in each sphere

n=\dfrac{mN_AZe}{M}

q=imbalance\times \dfrac{mN_AZe}{M}

q_1=0.0004\times \dfrac{96\times 6.022\times 10^{23}\times 18\times 1.6\times 10^{-19}}{0.018}\\\Rightarrow q_1=3699916.8\ C

q_2=0.0004\times \dfrac{48\times 6.022\times 10^{23}\times 18\times 1.6\times 10^{-19}}{0.018}\\\Rightarrow q_1=1849958.4\ C

Electrical force is given by

F=\dfrac{kq_1q_2}{r^2}\\\Rightarrow F=\dfrac{8.99\times 10^{9}\times 3699916.8\times 1849958.4}{30^2}\\\Rightarrow F=6.8370869499\times 10^{20}\ N

The electrostatic force of attraction between them is 6.8370869499\times 10^{20}\ N

4 0
4 years ago
Object a attacks object b with a gravitational force of 5 Newton’s from a given distance between the two objects is reduced in h
IceJOKER [234]

Since gravitational force decreases by distance squared, if you double the distance you get Sqrt the force, and if you half the distance the force becomes squared.

Should be 25N

6 0
4 years ago
Read 2 more answers
Other questions:
  • series RC circuit is built with a 15 kΩ resistor and a parallel-plate capacitor with 18-cm-diameter electrodes. A 18 V, 36 kHz s
    11·1 answer
  • What is the energy of one mole of photons with a wavelength of 418 nm? (h = 6.63 10-34 J . s, N = 6.02 1023.)
    9·1 answer
  • What type of plate boundry is located at the mid ocean ridges
    7·1 answer
  • How do scientists determine where an earthquake starts?
    12·2 answers
  • If the net force on an object is zero then the object has
    8·1 answer
  • A source produces 56 waves in one second and the waves move with a speed of 31 m/s. What is the wavelength of this wave?
    15·1 answer
  • 1.Energy is used when a force acts over a.....................
    8·1 answer
  • What is a force that opposes motion between two surfaces that are in contact?
    8·2 answers
  • a plane inclined at an angle of 30° to the horizontal has an efficiency of 50%. the force parallel to the plane required to push
    11·1 answer
  • Explain why Earth is not a perfect sphere?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!