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brilliants [131]
3 years ago
15

I need the answer for all of these l don't understand any of this

Physics
1 answer:
ElenaW [278]3 years ago
6 0
This should help, 
Search up the Scientific method and lookup for the meaning of each word.
I can't help with all of it but this should help for most 

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What types of changes in motion cause acceleration?
xxTIMURxx [149]

Answer:

Change in velocity and direction over a specific period of time.

Explanation:

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate the acceleration of an object.

Mathematically, acceleration is given by the equation;

Acceleration (a) = \frac{final \; velocity  -  initial \; velocity}{time}

a = \frac{v  -  u}{t}

Where,

a is acceleration measured in ms^{-2}

v and u is final and initial velocity respectively, measured in ms^{-1}

t is time measured in seconds.

Hence, the types of changes in motion that cause acceleration is a change in velocity and direction over a specific period of time.

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3 years ago
Steam is leaving a 4-L pressure cooker whose operating pressure is 150 kPa. It is observed that the amount of liquid in the cook
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Answer:

The mass flow rate is 2.37*10^-4kg/s

The exit velocity is 34.3m/s

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<u></u>

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2 years ago
What compound makes wood
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Answer:lignin

Explanation:

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What do wind turbines, hydroelectric dams, and ethanol plants have in common
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They all produce light and stuff
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A block of metal is 3 cm on each side. It has a mass of 283.5 grams. What is the density of the metal.
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Density =  \frac{Mass}{Volume}&#10;\\\rho=\frac{m}{V}&#10;\\\\\rho=\frac{283.5}{3^3}&#10;\\\\\rho=\frac{283.5}{27}&#10;\\\\\rho = 10.5  g/cm^3&#10;
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3 years ago
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