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bearhunter [10]
3 years ago
14

I don't know how to do this. Working on #2

Physics
1 answer:
Mashcka [7]3 years ago
5 0
-- You know how much work the bow does on the arrow.

         Work = (force) x (distance) =  (65 N) x (0.9 m)

-- THAT's the energy the arrow got from the bow, so
THAT's the kinetic energy the arrow has as it leaves the bow.

       KE = (1/2) (m) (speed)²

       so     (1/2) (0.075 kg) (speed)²  =  (65 N) x (0.9 m)

The speed is the only thing left unknown in this mess.
I'm sure you can handle it from here, and find the speed.       
 
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Define solar system.<br>Mention 3 types of energy.​
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Answer:

The Solar System is the Sun and all the objects that orbit around it

The Sun is orbited by planets, asteroids, comets and other things. ...

It has strong gravity

There are many types of energies

three types are

kinetic energy

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4 0
3 years ago
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Which type of motion does a wooden block NOT have when sliding down a hill? Question 1 options: A. Vibrational B. Rotational C.
nlexa [21]

Answer - the correct option is option B rotational

Explanation-  

A block that is sliding Downloads on inclination can have vibrational movement due to certain ups and downs or inequalities on on the surface. It will have frictional force due to the aberrations present in the surfaces of both block and Road and it will have transitional motion acting as the block's position is changing from one point to another the only motion.

It doesn't have is rotational because rotational  movements happen with circular objects only.  

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The position-time graph for two drivers (A and B) are shown in the figure below. Which of the following statements is correct?
elena-14-01-66 [18.8K]

Answer:

A

Explanation:

5 0
2 years ago
you see an insect egg lying on a leaf. What is the next step? Name or describe the stage you would expect to see come out from t
Marianna [84]

Answer:

Metamorphosis are the series of processes involved in the development of organisms, mostly insects after the egg is hatched.

Insects undergo complete or incomplete metamorphosis

Complete metamorphosis involves 4 stages which is the development from egg to larva to pups to adults in a step wise manner e.g butterfly, moth etc

Egg—> Larva—> Pupa—> Adults

In incomplete metamorphosis the stages are 3 and it involves development from egg to nymph to adults. E.g cockroach

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4 0
3 years ago
Albert dressed as TWO-FACE flips a coin up in the air at an upward velocity of 5.00 m/s. He fails to catch it on the way down an
Colt1911 [192]

Answer:

1.28 m, 14 m/s

Explanation:

At the maximum height, the velocity is 0.

Given:

a = -9.8 m/s²

v₀ = 5.00 m/s

v = 0 m/s

x₀ = 0 m

Find:

x

v² = v₀² + 2a(x - x₀)

(0 m/s)² = (5.00 m/s)² + 2(-9.8 m/s²) (x - 0 m)

x = 1.28 m

The maximum speed is at the bottom of the well.

Given:

a = -9.8 m/s²

v₀ = 5.00 m/s

x₀ = 0 m

x = -8.5 m

Find:

v

v² = v₀² + 2a(x - x₀)

v² = (5.00 m/s)² + 2(-9.8 m/s²) (-8.5 m - 0 m)

v = -13.8 m/s

Rounded to 2 sig-figs, the maximum speed is 14 m/s.

8 0
3 years ago
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