2 years ago

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Physics

2 answers:

butalik [34]2 years ago

8 0

Answer:

Explanation:

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Triss [41]2 years ago

5 0

Answer:

alr bet

Explanation:

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use the distributive property to express 16+48. please explain if you can or work it out so I can see how you got your answer. t

Rom4ik [11]

(40+10)+(8+6)
Hope I helped you

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2 years ago

Which statement describes what most likely occurs when a compass is placed next to a simple circuit made from a battery, a light

aleksley [76]

D. A magnetic field created by the electric current causes the compass needle to move.

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how much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 3 ohms?

ExtremeBDS [4]

3 Amper 9 divided by 3

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2 years ago

A 6 kg object falls 10 m. The object is attached mechanically to a paddle-wheel which rotates as the object falls. The paddle-wh

maksim [4K]

Answer: $16.234^{\circ}C$

Explanation:

Given

Mass of object (m)=6 kg

falling height(h)=10 m

mass of water( $m_w$ )=600 gm

temperature of water =15

specific heat of water $=4.186 j/g-^{\circ}C$

Let T be the Final Temperature of water

Here Object Potential Energy is converted into Heat energy which will be absorbed by water

Potential Energy(P.E.) $=mgh=6\times 9.81\times 10=588.6 J$

Heat supplied $=m_wc(\Delta T)$

$H.E.=600\times 4.186\times (T-16)$

$588.6=2511.6\times (T-16)$

T-16=0.234

$T=16.234^{\circ}C$

This is not an efficient way of heating water as there is only $0.234^{\circ}C$ increase in temperature.

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2 years ago

If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have

velikii [3]

Correct answer choice is:

D. A frequency higher than the original frequency.

Explanation:

This is a true case of Doppler's effect. The Doppler effect can be defined as the effect originated by a traveling source of waves in which there is a visible higher variation in pulse for observers towards what the source is progressing and a visible descending shift in rate for observers from what the source is dropping.

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