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GREYUIT [131]
3 years ago
14

Can you answer fast plz

Physics
1 answer:
tatyana61 [14]3 years ago
7 0

Answer:

wavelength frequency

energy

energy

frequency

Explanation:

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While playing catch with my dog I bounced the ball off the ground at a 30-degree angle. It had a range of 6 meters.
baherus [9]

The initial velocity of the ball is 8.2 m/s

Explanation:

The motion of the ball is a projectile motion, which consists of two separate motions:

- A uniform motion along the horizontal direction, at constant velocity

- A uniformly accelerated motion along the vertical direction, with constant acceleration (g=9.8 m/s^2, acceleration of gravity)

The range of a projectile can be derived by the equation of motions along the two directions, and it is found to be:

d=\frac{v^2 sin 2\theta}{g}

where

v is the initial velocity of the projectile

\theta is the angle of projection

g is the acceleration of gravity

For the ball in this problem, we have

\theta=30^{\circ}

d = 6 m is the range

Solving for v, we find the initial velocity:

v=\sqrt{\frac{gd}{sin 2\theta}}=\sqrt{\frac{(9.8)(6)}{sin (2\cdot 30^{\circ})}}=8.2 m/s

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

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3 years ago
Which statement or phrase best describes the currently accepted model of the atom?
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Answer:

4

Explanation:

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