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Sveta_85 [38]
3 years ago
11

Which are heterogeneous mixtures?

Physics
1 answer:
inna [77]3 years ago
4 0
C. Sugars dissolved in water
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Which type of central heating system is often used when heating many buildings from a central location?
Deffense [45]
Steam is often used as a central heating system when heating many buildings froma central location. So the correct option for the given question is option "D". Steam is actually generated ina single room or place mechanically or by useing fossil fuel or solar energy and then it is passed through pipelines to several rooms and buidings. This kind of system is mostly used when heating several rooms or building at once. Electric heaters are normally avoided as the cost of electricity is far higher than any other source of heating.
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From the mass spectrum of the compound, the molecule was determined to have a molar mass of 907 g/mol. what is its molecular for
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3 years ago
How does sound travel?
Doss [256]

Answer:

Sound vibrations travel in a wave pattern, and we call these vibrations sound waves. Sound waves move by vibrating objects and these objects vibrate other surrounding objects, carrying the sound along. ... Sound can move through the air, water, or solids, as long as there are particles to bounce off of.

Explanation:

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Lonnie pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to
abruzzese [7]

Answer:

B) 20N.s is the correct answer

Explanation:

The formula for the impulse is given as:

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Impulse = mass × change in speed

Impulse = m × ΔV

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initial speed  = 40m/s

Final speed = -60 m/s (Since the the ball will now move in the opposite direction after hitting the bat, the speed is negative)

mass = 0.20 kg

Thus, we have

Impulse = 0.20 × (40m/s - (-60)m/s)

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Why the greater the depth, the greater the pressure?
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