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balu736 [363]
3 years ago
15

An object is placed 60 cm in front of a concave mirror whose focal length is 20 cm. What is

Physics
1 answer:
Salsk061 [2.6K]3 years ago
6 0
Şsşsşssşggg 44466. 555
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You need to substitute in the correct numbers.
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Cerrena [4.2K]
The answer I found was parabola?
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A 1400kg car is moving at a speed of 25m/s. How much KE does the car have?
Nady [450]

Answer:

437500Joules

Explanation:

Kinetic energy=1/2mvsquare

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kinetic energy= 437500Joules

6 0
3 years ago
A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direct
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Answer:

The velocity of the other fragment immediately following the explosion is v .

Explanation:

Given :

Mass of original shell , m .

Velocity of shell , + v .

Now , the particle explodes into two half parts , i.e  \dfrac{m}{2} .

Since , no eternal force is applied in the particle .

Therefore , its momentum will be conserved .

So , Final momentum = Initial momentum

mv=\dfrac{mv}{2}+\dfrac{mu}{2}\\\\u=v

The velocity of the other fragment immediately following the explosion is v .

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2 years ago
Which word best describes this?<br> Particle<br> O Atom<br> O Molecule<br> O Substance
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That’s an atom

I hope that helped
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