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bulgar [2K]
3 years ago
10

What are the two main forces in a star

Physics
1 answer:
Natasha_Volkova [10]3 years ago
7 0
The mass of a star causes gravitational pull inwards. The fusion of hydrogen to helium create temperature and pressure which pushes outwards, so basically the forces of gravity and pressure. Possibly nuclear fusion.
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What is the kinetic energy of a 1.5x10^3 kg car traveling at 25 m/s?
Naddika [18.5K]

Answer:

468750 J

Explanation:

Kinetic energy = (1/2) (mass)(velocity)^2

7 0
3 years ago
Which statements in dalton's original atomic theory are now considered to be incorrect? describe how modern atomic theory differ
Illusion [34]
Incorrect statement in Dalton's original atomic theory are that atoms are indestructible and statement that all atoms of one element are same mass and characteristics.
Modern atomic theory is, of course, a little bit updated but original Daltons's theory is still remains. By modern atomic theory atoms can be destructed by nuclear reaction, but no with chemical reaction. Also there are different kinds of atoms in one element, their mass can be different. 
3 0
3 years ago
State the kinematic quantity that is equivalent to the slope of a position-time graph
Anni [7]

The figure shows the arrangement of given data.

The displacement is considered along X direction and time along Y direction.

The slope of the graph is given by tan θ

So tan θ = Δx/Δt = Velocity between those two points considered for finding slope of graph.

So slope of position time is graph is equivalent to kinematic quantity Velocity.

6 0
3 years ago
Suppose that on a routine trip around the galaxy, your dog puts his head out of the spacecraft window (as dogs often do). The so
neonofarm [45]

Answer: Yes, the dog's head will burn

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Since solar winds are streams of charged particles released from the upperparts of the Sun, called the "corona". This plasma mainly consists of electrons, protons and alpha particles with kinetic energy between 0.5 and 10 keV. Instilled within the solar-wind plasma is the interplanetary magnetic field.

If the dog holds it's breath the heat wave would burn it's head but not outrightly because the breath has ceased for some seconds and it can't absorb the much heat of the solar wind into it's nostrils. The effect of holding its breath would still be disastrous but not as the first case.

7 0
3 years ago
Please help me with these questions..
olya-2409 [2.1K]

(4) Elevations:

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Point B: 900 ft

Point C: 1500 ft

Point D: 1000 ft

(5) Contour interval: 100 ft

(6) Plot #1 best fits the profile seen in the contour map.

5 0
3 years ago
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