3 years ago

Which statement best describes the liquid state of matter?

Physics

1 answer:

Talja [164]3 years ago

6 0

There are no acceptable descriptions at all on that list of choices.

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Use your periodic table to answer the following question.

Pavel [41]

Helium has only 2 electrons in it's valence shell

So, option D is your answer.

Hope this helps!

6 0

3 years ago

A 1.80-kg monkey wrench is pivoted 0.250 m from its center of mass and allowed to swing as a physical pendulum. The period for s

Evgen [1.6K]

Answer:

(a) I (Moment of inertia)=0.0987 $kgm^{2}$

(b) W(Angular Speed)=2.66 $\frac{rad}{s}$

Explanation:

Given data

m (Monkey mass)= 1.80 kg

d=2.50 m

T (Time Period)=0.940 s

Angle= 0.400 rad

(a) I (Moment of Inertia)=?

(b) W (Angular Speed)=?

For part (a) I (Moment of Inertia)=?

Time Period Formula is given as

$T=2(3.14)\sqrt{\frac{I}{mgd} }$

After Simplifying we get

$I=\frac{mgdT^{2} }{4*(3.14)^{2}}$

$I=\frac{1.8*9.8*0.25*(0.94)^{2} }{4(3.14)^{2} }$

$I=0.0987 kgm^{2}$

For Part (b) Angular Speed

From Kinetic Energy we get

$KE=\frac{1}{2}IW^{2}$

Pontential Energy

$PE=mgd(1-Cosa)$

KE=PE

$\frac{1}{2}IW^{2}=mgd(1-Cosa)$

$W^{2}=\frac{2mgd(1-Cosa)}{I}$

$W=\sqrt{\frac{2*1.8*9.8*0.25*(1-Cos(0.4)rad)}{0.0987} }$

$W=2.66\frac{rad}{s}$

5 0

3 years ago

Which term is applied to the smooth, dark areas of the moon that people once thought were seas?

coldgirl [10]

Lunar maria . . . . . . . .

6 0

3 years ago

1.<br>What is a force? What changes can be produced by a force?(AS)

frutty [35]

Answer:

the pull or push which changes or tends to change the position of an object from rest to motion or motion to rest is called force.

Changes of force that can be produced:

Force can change the shape of a body.
Force can change the position of a body.
Force can stop the moving body.
Force can change the speed of a moving body.
Force can change the direction of a moving body.

7 0

3 years ago

A 50.0 g projectile is launched with a horizontal velocity of 657 m/s from a 4.65 kg launcher moving in the same direction at 2.

Anni [7]

Backwards with the speed 5.24m/s

4 0

3 years ago