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eimsori [14]
3 years ago
8

Describing Changes of State

Physics
1 answer:
Vera_Pavlovna [14]3 years ago
8 0

Answer:

ok

Explanation:

Physical conditions like temperature and pressure affect state of matter. ... When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).

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What is the displacement of an airplane that takes off and ascends 10,000 feet in the air but, to avoid turbulence, descends dow
sladkih [1.3K]
I think it’s A because ascending means going up 10,000 then descending is going down 2,000 so in all they are 8,000 feet above the ground
4 0
3 years ago
Read 2 more answers
What will happen to a negatively charged particle placed at rest between points that have electric potentials 0V and 9V? Explain
finlep [7]

Hey there!

a) The electric field is in direction of decreasing value of potential so the electric field here will points towards 0v from 9 v. But the charge on particle is negative so the force will be towards the 9v point. and so the charge will move towards the 9 V point.

b) Electric potential is a location-dependent quantity that expresses the amount of potential energy per unit of charge at a specified location while.the electric potential difference is the difference in electric potential (V) between the final and the initial location when work is done upon a charge to change its potential energy. Electric potential is always a relative quantity because no one can find out absolute potential at a point, so in reality only potential difference exists. We can assume potential at certain point (say at infinity it is zero) only then we are able to define potential at every point.

c) The knowlendge of electric potential helps us in finding the work done on the particle which is used in work energy theorem to find out the chanrge in kinetic energy and other stuff.

Hope this helps!

8 0
3 years ago
Hey Mathphys i need physics help again
Nata [24]

Explanation:

The magnitude of the net force can be found with Pythagorean theorem.

F² = Fx² + Fy²

F² = (1.06 N)² + (9.37 N)²

F = 9.43 N

The direction can be found with trigonometry (measured from the -y axis):

θ = atan(Fx / Fy)

θ = atan(1.06 / 9.37)

θ = 6.45°

4 0
3 years ago
A soccer ball was kicked off the roof of a building going
WINSTONCH [101]

Answer:

Final vertical velocity = -29m/s

Horizontal distance = 100m

Height = 20.41m

Explanation:

1. The vertical final velocity can be calculated thus: vy = vyo - gt

Where;

vy = vertical velocity (m/s)

vyo = vertical initial velocity (20m/s)

g = acceleration due to gravity (9.8m/s²)

t = time (5s)

Hence, vy = vyo - gt

vy = 20 - (9.8 × 5)

vy = 20 - 49

vy = -29m/s

2. x = V0 x t

Where;

x = horizontal distance (m)

Vo = initial velocity

t = time (s)

x = 20 × 5

x = 100m

3. Maximum height = (voy)²/2g

= 20²/ 2 × 9.8

= 400/19.6

= 20.41m

4 0
3 years ago
The (nonconservative) force propelling a 1.50 × 103-kg car up a mountain road does 4.70 × 106 J of work on the car. The car star
aliina [53]

Answer:

be the mehcanic for once and see what the answer is

Explanation:

6 0
3 years ago
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