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3 years ago

HELP!!!!! FILL IN THE BLANKS

Physics

1 answer:

Snezhnost [94]3 years ago

3 0

Answer:

If a compound if IONIC then it will dissolve quickyl/easily in water and have a higher boiling point.

If a compound if COVALENT then it will dissolve slowly in water and have a lower boiling point.

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A power station burns 75 kilograms of coal per second. Each kg of coal contains 27 million joules of energy.

Kaylis [27]

Answer:

Explanation:

a )

one kg of coal gives energy of 27 x 10⁶ J

75 kg of coal gives energy of 27 x 10⁶ x 75 J

So rate which energy is coming out of coal per second

= 27 x 10⁶ x 75 J

= 2025 x 10⁶ J /s

2025 million watts .

b ) energy output = 800 million watts

efficiency = (800 / 2025) x 100

= 39.5 % .

3 0

3 years ago

whats grater than god,more evil than the devil,the poor have it the rich need it and if you eat it you die.what am I

dolphi86 [110]

Answer:

Nothing

Explanation:

The rich need nothing they already have a lot of stuff, the poor have nothing they are poor and do not have much. Nothing is greater than god and nothing is more evil than the devil.

6 0

3 years ago

What exactly is Density? Please answer

solmaris [256]

Answer:

density is the quantity per a unit volume, unit area or unit length.

Explanation:

7 0

2 years ago

Examples of Cardiovascular Endurance ( check all that apply)

sveta [45]

Answer:

Cardiorespiratory endurance is the level at which your heart, lungs, and muscles work together when you're exercising for an extended period of time.

...

Other activities
running or jogging.
swimming.
cycling.
dancing.
boxing.
aerobics or similar activities.
any active sport.

7 0

3 years ago

4720 kj of energy are supplied to a material in order to raise its temperature by 65k. if the specific heat capacity of the mate

jeka57 [31]

The mass of material is 26.6 Kg

Given:

Q = 4720 KJ

Change in Temperature (AT) = 65 K

Specific heat capacity of material (c) = 2730 J K Kg*K

The relation between Q, AT, c and m are related by following formula: Q=m* c*∆T,

Plugging value in heat formula:

4720KJ = m* 2730 J/Kg*K * 65K

4720KJ = m * 177450J/kg

Converting 177450 J/kg to Kg/KJ

177450 J/kg*1KJ/1000J = 177.450KJ/kg

Dividing both side by 177.450KJ/kg

4720KJ/177.450KJ/Kg = m*177.450KJ/Kg÷ 177.450KJ/Kg

Hence, the mass of material = 26.6 Kg

Learn more about Mass here:

brainly.com/question/19385703

#SPJ4

6 0

2 years ago