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3 years ago

The Sun does NOT rotate the way Earth does. Which statement best describes the difference in their rotations?

Physics

1 answer:

Phantasy [73]3 years ago

6 0

I believe the answer is A. Have a blessed day.

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An object is launched from the top of a building which is 100 m tall (relative to the ground) at a speed of 22 m/s at an angle o

klio [65]

Answer:

$3.58\:\mathrm{s}$

Explanation:

We can use the kinematics equation $\Delta y=v_it+\frac{1}{2}at^2$ to solve this problem. To find the initial vertical velocity, find the vertical component of the object's initial velocity using basic trigonometry for right triangles:

$\sin28^{\circ}=\frac{y}{22},\\y=22\sin28^{\circ}=10.3283743813\:\mathrm{m/s}$

Now we can substitute values in our kinematics equation:

$\Delta y=-100$
$a=-9.8\:\mathrm{m/s^2}$ (acceleration due to gravity)
$v_i=-10.3283743813\:\mathrm{m/s}$
Solving for $t$

$-100=-10.3283743813t+\frac{1}{2}\cdot -9.8\cdot t^2,\\\\-4.9t^2-10.3283743813t+100=0,\\\\\boxed{t=3.5849312673637455}, t=-5.692762773751501\:\text{(Extraneous)}$

6 0

3 years ago

Sorry I keep asking questions, but if two forces on an object are balanced, will it move? (Im also trying to get rid of my point

Dmitrij [34]

If they are equal amounts in force then No it won't.

6 0

3 years ago

Read 2 more answers

Haylie wanted to see if the type of paper changed how far a paper airplane flew. She made two paper airplanes, one with construc

Irina-Kira [14]

Answer:

Measuring tape

Explanation:

Since we are interested in finding the distance flown by the plane, we would use an instrument measuring length. Since distance flown by the plane is quite significant, a measuring tape is used

6 0

3 years ago

Read 2 more answers

What's the answer to 28-4(x-5)=-4

Anna11 [10]

The answer is -23.

I hope this will be of use to you

6 0

3 years ago

Read 2 more answers

A firework is fired from the ground straight up on a planet with an acceleration due to gravity of 10.56 m/s/s. The firework wil

n200080 [17]

Answer:

h = 384.4 m

t = 8.5 s

Explanation:

The firework will explode at the highest point. Because it would start to move downward at the highest point. Using 3rd equation of motion:

2ah = Vf² - Vi²

where,

a = acceleration due to gravity at that planet = -10.56 m/s²

h = maximum height = ?

Vf = Final velocity = 0 m/s (since, firework stops at highest point)

Vi = Initial Velocity = 90.1 m/s

Therefore,

2(-10.56 m/s²)(h) = (0 m/s)² - (90.1 m/s)²

Now, we use 1st equation of motion:

Vf = Vi + at

0 m/s = 90.1 m/s + (-10.56 m/s²)(t)

3 0

3 years ago