Ask question

Ask question

All categories

3 years ago

12

What is the acceleration of a baseball that has a final velocity of 15.0 m/s when it crosses the plate 2.0 seconds after leaving

the pitchers hand? The initial velocity is 0.0 m/s and the baseball is traveling forward.

1 answer:

Leokris [45]3 years ago

3 0

I think it’s A pretty sure...

You might be interested in

Can we see the back side of the moon from earth?

Olegator [25]

No. The moon always keeps the same side facing us. Its rotation and revolution periods are equal.

5 0

2 years ago

Read 2 more answers

Which element easily loses one electron to form a positive ion?

olga nikolaevna [1]

Answer/Explanation: As mentioned above, the characteristic chemical property of a metal atom is to lose one or more of its electrons to form a positive ion. However, certain metals lose electrons much more readily than others. In particular, cesium (Cs) can give up its valence electron more easily than can lithium (Li).

-Bababooeyboy

5 0

3 years ago

Which statements about the two fossil images are correct?

tangare [24]

What fossil images, there are no pictures attached.

5 0

3 years ago

Read 2 more answers

What is the collective noun of chocolate

Vedmedyk [2.9K]

Answer:

creamy with milk and chocolate

4 0

3 years ago

The quantity of charge q (in coulombs) that has passed through a surface of area 2.00 cm2 varies with time

Makovka662 [10]

Explanation:

We have,

Surface area, $A=2\ cm^2=0.0002\ m^2$

The current varies wrt time t as :

$q(t) = 4t^3 + 5t + 6$

(a) At t = 2 seconds, electrical charge is given by :

$q(t) = 4t^3 + 5t + 6\\\\q(2) = 4(2)^3 + 5(2) + 6\\\\q=48\ C$

(b) Current is given by :

$I=\dfrac{dq}{dt}\\\\I=\dfrac{d(4t^3 + 5t + 6)}{dt}\\\\I=12t^2+5$

Instantaneous current at t = 1 s is,

$I=12(1)^2+5=17\ A$

(c) Current is, $I=12t^2+5$

Current density is given by electric current per unit area.

$J=\dfrac{I}{A}\\\\J=\dfrac{(12t^2+5)}{0.0002}\\\\J=5000(12t^2+5)\ A/m^2$

Therefore, it is the required explanation.

7 0

3 years ago