2 years ago

Study Island Someone help

Physics

2 answers:

FinnZ [79.3K]2 years ago

7 0

It would be either b or d, but most likely d

Gwar [14]2 years ago

5 0

I would think d because b and c aren’t correct

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olga nikolaevna [1]

Answer:

Explanation:

.--------------------.

4 0

2 years ago

3. According to the article, why did Europeans so quickly accept that the sun did move and change?

Sphinxa [80]

Answer:A

Explanation:because it is good

5 0

2 years ago

Read 2 more answers

A cooking pot is sitting in a kitchen for several hours unused. Why does it feel cold when you touch it?

masha68 [24]

Answer:

I would go with 2

Explanation:

But i would also not go with my answer. Lol

8 0

3 years ago

A frequency generator sends a 550Hz sound wave through both water and ice. What is the difference in wavelength between the wave

LUCKY_DIMON [66]

Answer:

3.1

Explanation:

use formula f = v/lambda

7 0

3 years ago

A cannon, positioned on a hill, shoots a cannonball horizontally at 23 m/s. The cannonball hits the stone wall 1.96 m below the

irina [24]

Answer: 14. 49 m

Explanation:

We can solve this problem with the following equations:

$x=V_{o} cos \theta t$ (1)

$y-y_{o}=V_{o} sin \theta t-\frac{1}{2}gt^{2}$ (2)

Where:

$x$ is the horizontal distance between the cannon and the ball

$V_{o}=23 m/s$ is the cannonball initial velocity

$\theta=0\°$ since the cannonball was shoot horizontally

$t$ is the time

$y=0$ is the final height of the cannonball

$y_{o}=1.96 m$ is the initial height of the cannonball

$g=9.8 m/s^{2}$ is the acceleration due gravity

Isolating $t$ from (2):

$t=\sqrt{-\frac{2(y-y_{o})}{g}}$ (3)

$t=\sqrt{-\frac{2(0 m-1.96 m)}{9.8 m/s^{2}}}$ (4)

$t=0.63 s$ (5)

Substituting (5) in (1):

$x=(23 m/s) cos(0\°) 0.63 s$ (6)

Finally:

$x=14.49 m$

5 0

3 years ago