What is a sedimentary, igneous, and a metamorphic rock?
Answers
Answer:
Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water. They accumulate in layers. Metamorphic rocks result when existing rocks are changed by heat, pressure, or reactive fluids, such as hot, mineral-laden water.
Explanation:
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Which type of circuit is becoming more common in residential electrical design and construction? A. Hazardous-area circuit B. Three-phase circuit C. 480-volt circuit D. Communication circuit
Answers
120hz.how long would it take for this wave to travel 300 meters.
Neat problem !
If we want to know how long it would take to cover some distance,
we'll need to know its speed.
Wave speed = (wavelength) x (frequency)
= (0.5 m) x (120 / sec)
= 60 m/s .
Then ...
Time = (distance) / (speed)
= (300 m) / (60 m/s)
= 5 seconds .
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If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person. The normal force is the support force exerted upon an object that is in contact with another stable object.
hope it helps
No link answers please
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Boyle’s Law states that, when temperature is held constant, the pressure and volume of a gas are inversely proportional.
What is meant by gas laws ?
Gas laws are defined as the laws that govern the properties of gases by determining the relationships between the pressure, volume and temperature of the gases.
Here,
Boyle's law is the gas law that governs the relationship between the pressure and volume of gases.
Boyle's law states that, for an ideal gas at a unit mass, the pressure of the gas is inversely proportional to the volume of the gas, at constant temperature.
P 1/V
PV = a constant
When the temperature of the gas is held constant.
Hence,
Boyle’s Law states that, when temperature is held constant, the pressure and volume of a gas are inversely proportional.
To learn more about gas laws, click:
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Answer:
When temperature is held constant, the pressure and volume of a gas are not proportional.
Explanation:
That is Boyle's Law
Homework due tomorrow!
Last question!!!!!
Answers
A child grows taller
An overweight person goes on a diet
A snowball rolls downhill and picks up snow making it grow
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we know that , weight of an object is given as
W = mg
where W = weight , m = mass of the object and g = acceleration due to gravity at that place.
An astronaut travels from the earth to the moon :
as the astronaut travels from the earth to the moon, the mass of astronaut stays the same but the weight change as acceleration due to gravity change since acceleration due to gravity on moon is only 1/6 times that on earth.
A child grows taller :
as child grows taller , he gains body mass . hence both mass and weight change.
An overweight person goes on a diet :
as an overweight person goes on diet , he loose body mass . hence both mass and weight change.
A snowball rolls downhill and picks up snow making it grow :
As snowball rolls downhill , it gains snow, hence its mass and in turn the weight change.