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3 years ago

What are the laws of motion

2 answers:

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Description
DescriptionIn classical mechanics, Newton's laws of motion are three laws that describe the relationship between the motion of an object and the forces acting on it. The first law states that an object either remains at rest or continues to move at a constant velocity, unless it is acted upon by an external force.

goldenfox [79]3 years ago

3 0

Answer: Newton’s 1st law- a body at rest will remain at rest, and a body in motion will remain in motion unless acted on by an external force

Newton’s 2nd law- the force acting on an object is equal to the mass of that object times it’s acceleration

News 3rd law- for every action, there is an equal and opposite reaction

Hope this helps!

Explanation:

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Water has a specific heat capacity nearly nine times that of iron. Suppose a 50-g pellet of iron at a temperature of 200∘C is dr

miv72 [106K]

Answer:

a. closer to 20∘C

Explanation:

$m_{p}$ = mass of pallet = 50 g = 0.050 kg

$c_{p}$ = specific heat of pallet = specific heat of iron

$T_{pi}$ = Initial temperature of pellet = 200 C

$m_{w}$ = mass of water = 50 g = 0.050 kg

$c_{w}$ = specific heat of water

$T_{wi}$ = Initial temperature of water = 20 C

$T_{e}$ = Final equilibrium temperature

Also given that

$c_{w} = 9 c_{p}$

Using conservation of energy

Energy gained by water = Energy lost by pellet

$m_{w} c_{w} (T_{e} - T_{wi}) = m_{p} c_{p} (T_{pi} - T_{e})\\(0.050) (9) c_{p} (T_{e} - 20) = (0.050) c_{p} (200 - T_{e})\\ (9) (T_{e} - 20) = (200 - T_{e})\\T_{e} = 38 C$

hence the correct choice is

a. closer to 20∘C

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4 years ago

The ability to transfer energy explosively into force is _____.

Paraphin [41]

<span>The rate at which energy is transferred is called "power."</span>

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3 years ago

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4. Elements that lie along the stair step line of the periodic table are

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The answer is B. metalloids

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3 years ago

Mars can have bigger mountains than the Earth because it has a smaller mass and surface gravity.

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Explanation:

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Describe the relationship between amperage, voltage, and, as well as resstance.

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Answer:

$I=\frac{V}{R}$

Explanation:

Ohms law says that the current in the conductor between the two points is directly related or directly proportional to the voltage by keeping a proportionality of constant which is called resistance.

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$I=\frac{V}{R}$

Here, I is the current measure in ampere or amperage, V is voltage measure in voltage and R is resistance measure in Ohm.

Now the relation between the amperage, voltage and resistance will be,

$I=\frac{V}{R}$

Amperage=Voltage/Resistance

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3 years ago

What are the laws of motion​

What are the laws of motion