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arsen [322]
3 years ago
10

Question 3 - If Julia starts out at rest, and in 13 s speeds up to 75 m/s, what is her acceleration?

Physics
1 answer:
Hitman42 [59]3 years ago
7 0

Answer:

D

Explanation:

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An outfielder throws a baseball with an initial speed of 81.8mi/h. Just before an infielder catches the ball at the same level,
agasfer [191]

Answer:

-20.158ft-lb

Explanation:

Check the attached files for the explanation.

3 0
3 years ago
A 750 watt hairdryer is used for 60 seconds. how many joules of energy are used?
daser333 [38]
We know, Power = Energy / time
Here, P = 750 Watt
t = 60 sec

Substitute their values, 
750 = E / 60
E = 750 * 60
E = 45,000 J

In short, Your Answer would be 45,000 Joules

Hope this helps!
4 0
4 years ago
Read 2 more answers
What is the acceleration of an arrow that has a mass of 0.1 kg and a force of 9 N?
djverab [1.8K]

Force = Mass x Acceleration

9N = 0.1kg x Acceleration

Acceleration = 9N / 0.1kg

Acceleration = 90 m/s^2

4 0
3 years ago
Consider a turntable to be a circular disk of moment of inertia It rotating at a constant angular velocity ωi around an axis thr
Rom4ik [11]

Answer:

Note: Angular momentum is always conserved in a collision.

The initial angular momentum of the system is

L = ( It ) ( ωi )

where It = moment of inertia of the rotating circular disc,

ωi = angular velocity of the rotating circular disc

The final angular momentum is

L = ( It + Ir ) ( ωf )

where ωf is the final angular velocity of the system.

Since the two angular momenta are equal, we see that

( It ) ( ωi ) = ( It + Ir ) ( ωf )

so making ωf the subject of the formula

ωf = [ ( It ) / ( It + Ir ) ] ωi

Explanation:

7 0
3 years ago
Earth’s crust continuously melts and solidifies in the upper mantle. Why does oceanic crust solidify faster than continental cru
Softa [21]

The oceanic crust solidifies faster than the continental crust. Because when magma comes into contact with ocean water it cools faster than when it reaches continental rock. Option C is correct.

<h3>What is the crust?</h3>

The outermost layer of a terrestrial planet is referred to as its "crust."

In the upper mantle, the Earth's crust is constantly melting and solidifying. Compared to magma beneath the continental crust, the oceanic crust has a lower temperature.

Magma cools more quickly when it comes into touch with ocean water than when it hits continental rock. causes the continental crust to solidify more slowly than the oceanic crust.

Hence option C is correct.

To learn more about the crust refer;

brainly.com/question/13428623

#SPJ1

3 0
2 years ago
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