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4 years ago

What is one reason why rock layers are not horizontal?

1 answer:

8 0

One of the most important reasons is that when mountains were built there were events such as tilting. Because of that most of the sedimentary rocks were no longer horizontal.We know that because of the law of original horizontality

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What does the ideal gas law allow a scientist to calculate that the other gas laws do not?

Anvisha [2.4K]

The ideal gas law allows a scientist to calculate the number of moles that the other gas laws do not. The ideal gas law is given as

P V = n RT

rearranging the equation by dividing both side by "RT", we get

PV/(RT) = nRT/(RT)

n = PV/(RT)

inserting the values of pressure, volume and temperature, we get number of moles.

7 0

3 years ago

Read 2 more answers

Assume that in 2010 the United States will need 2.0×1012 watts of electric power produced by thousands of 1000 MW power plants.

Alex73 [517]

Answer:

1752.14 tonnes per year.

Explanation:

To solve this exercise it is necessary to apply the concepts related to power consumption and power production.

By conservation of energy we know that:

$\dot{P} = \bar{P}$

Where,

$\dot{P} =$ Production of Power

$\bar{P} =$ Consumption of power

Where the production of power would be,

$\dot{P} = m \dot{E}\eta$

Where,

m = Total mass required

$\dot{E} =$ Energy per Kilogram

$\eta =$ Efficiency

The problem gives us the aforementioned values under a production efficiency of 45%, that is,

$\dot{P} = \bar{P}$

$m \dot{E}\eta = \bar{P}$

Replacing the values we have,

$m(8*10^13)(0.45) = 2*10^{12}$

Solving for m,

$m = \frac{ 2*10^{12}}{(8*10^13)(0.45)}$

$m = 0.0556 \frac{kg}{s}$

We have the mass in kilograms and the time in seconds, we need to transform this to tons per year, then,

$m = 0.556\frac{kg}{s}*(\frac{3.1536*10^7s}{1year})(\frac{1ton}{1000kg})$

$m = 1752.14$ tonnes per year.

8 0

3 years ago

3. A 142 g baseball is thrown at a speed of 42.9 m/s. What is the kinetic energy of the baseball at this moment?

krok68 [10]

Kinetic energy=1/2mv^2
=1/2(142*10^-3)(42.9)^2=130.6=131J

8 0

3 years ago

An object with a mass of 2 kg is moving with a velocity of 15 m/s.

7nadin3 [17]

KE= 1/2MV^2 - equation
KE= 1/2 (2 kg)(15 m/s)^2 - plug it to the equation
KE= (1 kg)(225 m/s) - multiply
KE= 225 J - Answer (letter D)
Hope this helps

8 0

4 years ago

Two microphones are connected to a

ale4655 [162]

Answer:

344.8 m/s

Explanation:

Looking for speed of sound = meters / sec

2 meters / .0058 seconds = 344.8 m/s

5 0

2 years ago