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Nana76 [90]
3 years ago
9

PLEASE NEED HELP NOW!11 50 POINTS AND BRAINLY!!!!!!

Physics
2 answers:
Vilka [71]3 years ago
6 0
You know that you need to show the ven diagram and the topics of it.
Tamiku [17]3 years ago
6 0
For the first one 

<span>Compounds
</span>Chemically combinedFixed proportionsComponents change properties

BothMade of elements2 or more components

MixturesPhysically combinedVariable proportionsComponents retain properties

For the second one.

<span><span>Will accelerate to the leftA box experiences a 20 N force to the left and two different 8 N forces to the right

A box experiences a 20 N force to the left and a 19 N frictional force to the right

</span><span>Will accelerate to the right

A rope experiences three 400 N forces to the left and three different 410 N forces to the right

A skateboard is pushed up a hill with a 90 N force to the left and experiences a gravitational force of 100 N to the right

A bottle rocket experiences a 500 N force to the right and 300 N of air resistance to the left

A car experiences a 300 N force to the right from the engine and separate 150 N force due to friction and air resistance to the left.

And none for w<span>ill not accelerate

For the third one

</span>A fireman turns on his hose and is knocked backwards.3rd Law

It takes less force to move a ping pong ball than a bowling ball.2nd Law

A soccer ball will not move until a player kicks it.1st law

If air lets out of a balloon quickly, it pushes down and the balloon moves up.3rd Law

F = ma2nd Law

A bowling ball hits the pins and they fly off in all directions.1st Law

Hope this helps!</span></span>
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Answer

Explanation:

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3 years ago
Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
arsen [322]

Answer:

Given that

speed u=4*10^6 m/s

electric field E=4*10^3 N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates  to find the horizontal distance traveled by the electron when it hits the plate.

acceleration a=qE/m=1.6*10^{-19}*4*10^3/9.1*10^{-31} =0.7*10^{15}=7*10^{14} m/s

now we find the horizontal distance traveled by electrons hit the plates

horizontal distance

X=u[2y/a]^{1/2}

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5 0
3 years ago
If a system has 225 kcal of work done to it, and releases 5.00 × 102 kj of heat into its surroundings, what is the change in int
vovikov84 [41]

We can solve the problem by using the first law of thermodynamics:

\Delta U = Q-W

where

\Delta U is the change in internal energy of the system

Q is the heat absorbed by the system

W is the work done by the system on the surrounding


In this problem, the work done by the system is

W=-225 kcal=-941.4 kJ

with a negative sign because the work is done by the surrounding on the system, while the heat absorbed is

Q=-5 \cdot 10^2 kJ=-500 kJ

with a negative sign as well because it is released by the system.


Therefore, by using the initial equation, we find

\Delta U=Q-W=-500 kJ+941.4 kJ=441.4 kJ

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