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ElenaW [278]
3 years ago
13

A car starts from rest and accelerates uniformly at a rate of 2.0 meter per second squared for 4.0 seconds. During this time int

erval, the car traveled ________ meters.
Physics
1 answer:
vagabundo [1.1K]3 years ago
7 0

Answer:

16

Explanation:

\frac{1}{2}  \times 2 \times  {4}^{2}  = 16

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Which ecosystem has the most biodiversity? How do you<br> know?
Bezzdna [24]

Answer:

ecosystem B

Explanation:

because it goes through more animal's and is correct

8 0
3 years ago
Helpppppp please i can NOT fail
Andrej [43]

Answer:

The African plate is splitting apart to form two separate plates. The African plate is colliding with the Arabian plate.

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3 years ago
Read 2 more answers
What is the energy released in this B- nuclear reaction 2K-&gt; 2Ca0,e? (The atomic mass of 42 K is 41.962403 u and that of 42Ca
Katyanochek1 [597]

<u>Answer:</u> The energy released in the given nuclear reaction is 3.526 MeV.

<u>Explanation:</u>

For the given nuclear reaction:

_{19}^{42}\textrm{K}\rightarrow _{20}^{42}\textrm{Ca}+_{-1}^{0}\textrm{e}

We are given:

Mass of _{19}^{42}\textrm{K} = 41.962403 u

Mass of _{20}^{42}\textrm{Ca} = 41.958618 u

To calculate the mass defect, we use the equation:

\Delta m=\text{Mass of reactants}-\text{Mass of products}

Putting values in above equation, we get:

\Delta m=(41.962403-41.958618)=0.003785u

To calculate the energy released, we use the equation:

E=\Delta mc^2\\E=(0.003785u)\times c^2

E=(0.003785u)\times (931.5MeV) (Conversion factor: 1u=931.5MeV/c^2 )

E=3.526MeV

Hence, the energy released in the given nuclear reaction is 3.526 MeV.

7 0
3 years ago
In what ways can a nucleus change during a nuclear reaction??
garri49 [273]
<h2><u><em>Nuclear reactions are processes in which the nucleus of an atom is changed.</em></u></h2>
6 0
3 years ago
Until 1883, every city and town in the United States kept its own local time. Today, travelers reset their watches only when the
inna [77]

Answer:

135° (degrees)

Explanation:

The Earth rotates 360° in about 24 h

How many degrees in 1 hour

360^{\circ}=24\ h\\\Rightarrow 1\ h=\frac{360}{24}\\\Rightarrow 1\ h=15^{\circ}

So, in 1 hour the Earth rotates 15 degrees. This means that a person would have to reset their watch by 1 hour after travelling 15 degrees

In 9 hours

9\ h=9\times 15^{\circ}=135^{\circ}\\\Rightarrow 9\ h=135^{\circ}

So, a person would have to travel 135 degrees in order to reset their watch by 9 hours.

7 0
3 years ago
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