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3 years ago

Which phase lasts longer, a full moon or a new moon?

Chemistry

2 answers:

elena-14-01-66 [18.8K]3 years ago

8 0

Answer is c !!!!!!!!!!!!!!!!!!

Natasha_Volkova [10]3 years ago

3 0

Answer: Definitely the answer is C. They both last for the same number of days.

Explanation: This requires the moon to complete a bit more than one orbit to be between the earth and the sun again. The period from new moon to full moon is one half a synodic month of 29.530/2 which is 14.765 days.

You might be interested in

What do most fossil fuels originate from?

likoan [24]

Answer:

Once living organisms.

Explanation:

Living organisms take a <em>very </em>long time to turn into fossil fuels, so it's not the first option.

Waste from living organisms is called "bio-fuel", not fossil fuel, so second option is wrong.

Ancient rocks are not fuel, so 3rd option is incorrect.

Hope this helps!

7 0

3 years ago

An unknown solution has a ph of 2. How would you classify this solution

sammy [17]

It’s an acid and it’s conducive

4 0

3 years ago

The density for potassium is 0.856 g/cm3. What would be the mass of a 30 cm3 piece of potassium? A. 51.36g B. 25.68g C. 25.5g D.

CaHeK987 [17]

Density = mass / Volume 0.856 g/cm3 = x / 30 cm3(0.856)(30) = xx = 25.68 grams

4 0

4 years ago

Read 2 more answers

A heat pump is used to heat a house in the winter and to cool it in the summer. During the winter, the outside air serves as a l

elixir [45]

Answer:

$T_{C}$ = -4.2°C

$T_{H}$ = 49.4°C

Explanation:

A Carnot cycle is known as an ideal cycle in thermodynamic. Therefore, in theory, we have:

| $\frac{Q_{C} }{Q_{H} }$ | = $\frac{T_{C} }{T_{H} }$

Similarly,

| $Q_{H}$ | = | $Q_{C}$ | + | $W_{S}$ |

During winter, the value of | $T_{H}$ | = 20°C = 273.15 + 20 = 293.15 K and | $W_{S}$ | = 1.5 kW. Therefore,

| $Q_{H}$ | = 0.75( $T_{H}$ - $T_{C}$ )

Similarly,

| $\frac{W_{S} }{Q_{H} }$ | = 1 - $\frac{T_{C} }{T_{H} }$

1.5/0.75*(293.15- $T_{C}$ ) = 1 - ( $T_{C}$ /293.15

Further simplification,

$T_{C}$ = -4.2°C

During summer, $T_{C}$ = 25°C = 273.15+25 = 298.15 K, and | $W_{S}$ | = 1.5 kW. Therefore,

| $Q_{C}$ | = 0.75( $T_{H}$ - $T_{C}$ )

Similarly,

| $\frac{W_{S} }{Q_{C} }$ | = $\frac{T_{H} }{T_{C} }$ - 1

1.5/0.75*( $T_{H}$ - 298.15) = ( $T_{H}$ /298.15

Further simplification,

$T_{H}$ = 49.4°C

4 0

4 years ago

What are the pressure and the temperature of the normal boiling point of water?

lana66690 [7]

Normal boiling point is 99.97 degrees C and 211.9 degrees ferinhight. And a pressure of 1atm or 101.325 kPa. Hope this helps :)

3 0

4 years ago

Read 2 more answers