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3 years ago

Which term refers to the energy that is stored or released during a change of state of water

2 answers:

8 0

The appropriate term is latent heat. This energy is released as the water changes state from a gas to liquid....a liquid to solid etc. the latent heat is either absorbed or given off by the water as it changes its physical state. Latent heat of fusion is associated with freezing a liquid or melting a solid.

agasfer [191]3 years ago

6 0

It indicates how near the air is to saturation

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Which circuit is a series circuit

posledela

Answer:

The answer is A

Explanation:

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3 years ago

A sanding disk with rotational inertia 6.5 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnit

xeze [42]

Answer:

The angular momentum and angular velocity are 1.134 kg.m²/s and 174.5 rad/s.

Explanation:

Given that,

Moment of inertia $I= 6.5\times10^{-3}\ kg.m^2$

Torque = 21 N.m

Time dt = 54 ms

(a). We need to calculate the angular momentum

Using formula of torque

$\tau=\dfrac{dL}{dt}$

$dL =\tau\times t$

Where, dL = angular momentum

t = time

$\tau$ = torque

Put the value into the formula

$dL=21\times0.054$

$dL=1.134\ kg.m^2/s$

(b). We need to calculate the angular velocity of the disk

Using formula of angular velocity

$dL=I\omega$

$\omega=\dfrac{dL}{I}$

$\omega=\dfrac{1.134}{6.5\times10^{-3}}$

$\omega=174.5\ rad/s$

Hence, The angular momentum and angular velocity are 1.134 kg.m²/s and 174.5 rad/s.

3 0

3 years ago

If two negative charges of -2 C and -2 C are put 32,692 m apart from each other how much force will push them apart?

babunello [35]

Answer:

33.65 N

Explanation:

Force that will push them away is given from the equation;

F = Kq1•q2/r²

Where;

K is coulumbs constant = 8.99 × 10^(9) Nm²/C²

We are given;

q1 = q2 = -2 C

r = 32692 m

Thus;

F = 8.99 × 10^(9) × (-2) × (-2)/32692²

F ≈ 33.65 N

6 0

3 years ago

What two types of energy does a rock have as it rolls down a hill

AnnZ [28]

Kinetic energy

When the rock starts rolling down the hill it has kinetic energy. When the rock gets to the bottom of the hill and stops, it is no longer in motion therefore it no longer has kinetic energy, the energy has been converted back into potential energy.

3 0

3 years ago

A substance that undergoes a _____ change is still the same substance after the change. molecular chemical physical atomic

kirza4 [7]

Answer:

physical change

Explanation:

6 0

3 years ago

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