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3 years ago

TRANSFORMA: 765 mm Hg a atm

Physics

1 answer:

-Dominant- [34]3 years ago

5 0

Presión

765

ATMÓSFERA

1,00658

Answer:

Explanation:

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A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direct

-Dominant- [34]

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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3 years ago

A scientist testing to see how a cat “always” lands on their feet drops a cat upside down out of a third story window at a heigh

makkiz [27]

<u>Answer: </u>

Cat has 2.02 seconds to right itself.

<u>Explanation: </u>

Initial height of cat from ground = 20 meter.

We have equation of motion , $s= ut+\frac{1}{2} at^2$ , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

In this the velocity of cat in vertical direction = 0 m/s, acceleration = acceleration due to gravity = 9.8 $m/s^2$ , we need to calculate time when s = 20 meter.

Substituting

$20=0*t+\frac{1}{2} *9.8*t^2\\ \\ t = 2.02 seconds$

So, cat has 2.02 seconds to right itself.

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3 years ago

Need help on this one

IgorC [24]

Answer:

Inversly or Indirectly

Explanation:

the voltage (V) and inversely proportional to the resistance (R).

Hope it helps!

6 0

2 years ago

You are in a spaceship far outside our solar system. Inside your spaceship there is not gravity and no air (and therefore no air

Andreyy89

Newtons first law: The ball will go at constant speed without stopping

Newtons third law: The ball will also push back at you causing you to go back as well

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3 years ago

Read 2 more answers

A toy car (0.50 kg) runs on a frictionless track and has an initial kinetic energy of 2.2 J, as the drawing shows. The numbers b

steposvetlana [31]

Answer:

Height will be equal to 0.4489 m

Explanation:

We have given mass of the toy m = 0.50 kg

Initial kinetic energy K = 2.2 J

We have to fond the height of the hill over which car roast

When car will roast the hill its kinetic energy will be converted into potential energy and at maximum height all kinetic energy will be converted into potential energy

So at maximum height $mgh=K$

Acceleration due to gravity $g=9.8m/sec^2$

So 0.50×9.8×h = 2.2

h = 0.4489 m

6 0

3 years ago