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

Compounds
Chemically combinedFixed proportionsComponents change properties

BothMade of elements2 or more components

MixturesPhysically combinedVariable proportionsComponents retain properties

For the second one.

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

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 will not accelerate

For the third one

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!

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A bird sits on a high-voltage power line with its feet 3.87 cm apart. The wire is made from aluminum, is 2.11 cm in diameter, an

Svetlanka [38]

Answer:

ΔV=0.484mV

Explanation:

The potential difference across the end of conductor that obeys Ohms law:

ΔV=IR

Where I is current

R is resistance

The resistance of a cylindrical conductor is related to its resistivity p,Length L and cross section area A

R=(pL)/A

Given data

Length L=3.87 cm =0.0387m

Diameter d=2.11 cm =0.0211 m

Current I=165 A

Resistivity of aluminum p=2.65×10⁻⁸ ohms

ΔV=IR

$=I(\frac{pL}{A})\\ =I(\frac{pL}{\pi r^{2} } )\\=I(\frac{pL}{\pi (d/2)^{2} } )\\=165A((\frac{(2.65*10^{-8})(0.0387m)}{\pi (0.0211m/2)^{2} } ))\\=4.84*10^{-4}V$

ΔV=0.484mV

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3 years ago

How much work is done if I use 5N of force to move an object 2 meters

sweet-ann [11.9K]

It’s 10 joules. W=FD, W=5•2=10

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In a vertical dive, a peregrine falcon can accelerate at 0.6 times the free-fall acceleration g (that is, at 0.6 g ) in reaching

anyanavicka [17]

The radius R of the turn is 1.984 km.

Explanation:

As the falcon is experiencing a centripetal motion, the acceleration exhibited by the falcon will be centripetal acceleration. The formula for centripetal acceleration is

$a=\frac{v^{2} }{R}$