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2 years ago

Questlon 7 of 10

Physics

2 answers:

katovenus [111]2 years ago

6 0

Answer:

Plasma

Explanation:

Aye pecks said so

jek_recluse [69]2 years ago

5 0

Answer:

0B. Liqiud can always conduct electricity

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A ball of mass 0.220 kg that is moving with a speed of 6.3 m/s collides head-on and elastically with another ball initially at r

Alex17521 [72]

Answer:

(a) Velocity of target is 2.7 m/s.

(b) Mass of target is 0.807 kg.

Explanation:

Mass of ball $m_{1}=0.22\;kg$

initial speed of the ball $v_{1i}=6.3\;m/s$

Final speed of the ball $v_{2f}=-3.6\;m/s$

Part (a) The second ball is initially at rest. So, by the conservation of momentum,

$p_{i}=p_{f}\\m_{1}v_{1i}+m_{2}v_{2i}=m_{1}v_{1f}+m_{2}v_{2f}\\0.22\times6.3+m_{2}\times 0=0.22\times(-3.6)+m_2v_{2f}\\m_2v_{2f}=2.178\:\:\:\:\;\;\;\;\;\;\;\;\;\; ...(1)$

Now, the velocity of approach is equal to the velocity of separation,

$v_{1i}-v_{2i}=v_{2f}-v_{1f}\\6.3-0=v_{2f}-(-3.6)\\v_{2f}=2.7\;m/s$

Part (b): From equation (1),

$m_2v_{2f}=2.178\\m_2=\frac{2.178}{2.7}\\m_2=0.806\;kg$

5 0

2 years ago

When collecting a gas over water, the gas is always a mixture of the gas collected and water vapor.

bagirrra123 [75]

When collecting a gas over water, the gas is always a mixture of the gas collected and water vapor. This statement is True

Water vapour or aqueous vapour is the name for the gaseous state of water. It is a particular kind of water condition inside the hydrosphere. Both the boiling and evaporation of liquid water as well as the sublimation of ice can produce water vapour. Water vapour is transparent, like the bulk of other atmospheric constituents. An example of water vapour is the mist that floats over a pot of boiling water.

<h3>What is Water vapor ?</h3>

The gaseous phase of water is known as water vapour, water vapour, or aqueous vapour. Within the hydrosphere, it is one type of water state. Water vapour can be created by the boiling or evaporation of liquid water as well as by the sublimation of ice. Like the majority of other atmospheric elements, water vapour is transparent.

Learn more about Water vapor here:

brainly.com/question/422363

#SPJ4

7 0

11 months ago

You could use an elevator or stairs to lift a box to the tenth floor. Which has greater energy? Why?

love history [14]

Stairs because every step u take u use energy and the more steps the more energy

6 0

2 years ago

You hold glider AA of mass 0.125 kgkg and glider BB of mass 0.375 kgkg at rest on an air track with a compressed spring of negli

andrew11 [14]

Answer:

The magnitude of the velocity of glider B is 0.2m/s and the direction is the negative direction

Explanation:

Inelastic Collision

Given data

mass of glider A m1= 0.125kg

initial velocity u1=0

final velocity v1= 0.600 m/s

mass of glider B m2= 0.375kg

initial velocity u2=0

final velocity v2=?

We know that the expression for the conservation of momentum is given as

m1u1+m2u2=m1v1+m2v2

since u1=u2=u=0m/s

u(m1+m2)=m1v1+m2v2

substituting we have

0(0.125+0.0375)=0.125*0.6+0.375*v2

0=0.075+0.375v2

0.375v2=-0.075

v2=-0.075/0.375

v2=-0.2m/s

The magnitude of the velocity of glider B is 0.2m/s and the direction is the negative direction

3 0

2 years ago

When an object moves, stops moving, changes speed, or changes direction, how do scientists describe that condition?

FromTheMoon [43]

Those are all "acceleration", caused by
unbalanced forces acting on the object.

8 0

2 years ago

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