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Vesna [10]
2 years ago
12

Solid water has the same molecules as liquid water. Is this true or false?

Physics
2 answers:
Vika [28.1K]2 years ago
6 0
Water can change from a liquid to a solid or a gas and back to a liquid, but its molecular structure always stays the same.
spayn [35]2 years ago
5 0

Answer:

True

Explanation:

Water molecules contain two hydrogen atoms bonded to one oxygen atom. The large oxygen atom has a stronger attraction for electrons than the small hydrogen atoms.

Water can change from a liquid to a solid or a gas and back to a liquid, but its molecular structure always stays the same.

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Which are the two most popular candidates for gamma-ray bursters? Group of answer choices collisions between a white dwarf and a
kow [346]

Answer:

hypernova making a black hole, and merger of two neutron stars

7 0
2 years ago
Time (s)
olya-2409 [2.1K]

The moon orbiting the Earth

Explanation:

The motion of the moon orbiting the earth is a circular motion. Circular motion is simply the motion of an object in circle at constant speed.

  • A cannonball flying from a cannon is a projectile motion and not a circular motion.
  • A car moving along a straight track is a linear/translational motion.
  • Pendulum of a grandfather clock is a simple harmonic motion.

Learn more:

Circular motion brainly.com/question/2562955

#learnwithBrainly

7 0
3 years ago
Why are light-years more convenient than miles, kilometers, or astronomical units (au) for measuring the distances to stars and
Tomtit [17]

Answer:

sEE BELOW

Explanation:

Well.....because the numbers are 'astronomical'....meaning VERY, VERY , VERY LARGE

5 0
1 year ago
If the mass is displaced 0.270 m from equilibrium and released, what is its speed when it is 0.130 m from equilibrium?
puteri [66]

Answer:

The speed is 1.52 m.

Explanation:

Given that,

Displacement =0.270 m

Distance = 0.130 m

Suppose a 0.321-kg mass is attached to a spring with a force constant of 13.3 N/m.

We need to calculate the angular velocity

Using formula of angular velocity

\omega=\sqrt{\dfrac{k}{m}}

Put the value into the formula

\omega=\sqrt{\dfrac{13.3}{0.321}}

\omega=6.43\ rad/s

We need to calculate the velocity

Using formula of velocity

v=\omega\sqrt{A^2-x^2}

Put the value into the formula

v=6.43\times\sqrt{0.270^2-0.130^2}

v=1.52\ m/s

Hence, The speed is 1.52 m.

6 0
2 years ago
This force can either push the block upward at a constant velocity or allow it to slide downward at a constant velocity. The mag
sweet-ann [11.9K]

Answer:

Explanation:

Given

coefficient of kinetic friction(\mu _k)=0.34

inclination \theta =44

weight of block=51 N

(a) When block is moving upward friction force acts downward

thus

Fsin\theta -W-f_r=0

as block is moving with constant velocity thus F_{net} is zero

f_r=\mu _kN=0.34\times Fcos\theta

F\left ( \sin \theta -\mu \cos \theta \right )=W

F=\frac{51}{0.45}=113.31 N

(b)When Block slides down the wall friction changes its direction to oppose the block

Fsin\theta -W+f_r=0

F\left ( \sin \theta +\mu \cos \theta \right )=W

F=\frac{W}{\left ( \sin \theta +\mu \cos \theta \right )}

F=\frac{51}{0.939}=54.299 N

3 0
3 years ago
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