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3 years ago

8

Choose which best describes the following argument:

2 answers:

DaniilM [7]3 years ago

5 0

Answer: The answer is a

Explanation:

guapka [62]3 years ago

5 0

It is A:::::::::::::::::::::::::::::///::

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Advantages and disadvantages of nuclear energy

andrezito [222]

Advantages
Incredibly efficient
emmisionless
high energy density

Disadvantages
Non renewable
potential safety hazard
decomissioning of plants and disposal of nuclear waste is expensive and time consuming

4 0

3 years ago

Two identical conducting spheres are placed 80.0 cm apart. One is given a charge of 5.8 C and the other is given a charge of 6.4

Zepler [3.9K]

Answer: $5.214(10)^{11} N$

Explanation:

According to <u>Coulomb's Law:</u>

<em>"The electrostatic force $F_{E}$ between two point charges $q_{1}$ and $q_{2}$ is proportional to the product of the charges and inversely proportional to the square of the distance $d$ that separates them, and has the direction of the line that joins them".</em>

<em />

Mathematically this law is written as:

$F_{E}=K\frac{q_{1}.q_{2}}{d^{2}}$

Where:

$F_{E}$ is the electrostatic force

$K=8.99(10)^{9} Nm^{2}/C^{2}$ is the Coulomb's constant

$q_{1}=5.8 C$ and $q_{2}=6.4 C$ are the electric charges

$d=80 cm \frac{1 m}{100 cm}=0.8 m$ is the separation distance between the charges

Solving:

$F_{E}=8.99(10)^{9} Nm^{2}/C^{2}\frac{(5.8 C)(6.4 C)}{(0.8 m)^{2}}$

$F_{E}=5.214(10)^{11} N$

7 0

4 years ago

A motorcycle sees a branch in the road, and hits the brakes, slowing down at -6.42m/s^2. If it takes him 2.85s to stop, what was

Alborosie

Answer:

The initial velocity of the motorcycle is 18.29 m/s.

Explanation:

Given that,

When a motorcycle hits the brakes, its final speed becomes zero.

Acceleration of the motorcycle, $a=-6.42\ m/s^2$

Time taken to stop, t = 2.85 s

We need to find the initial velocity of the motorcycle. The first equation of kinematics is given by :

$v=u+at\\\\-u=at\\\\u=6.42\times 2.85\\\\u=18.29\ m/s$

So, the initial velocity of the motorcycle is 18.29 m/s.

7 0

3 years ago

Select the correct answer.

Bumek [7]

Answer:

B. 2 Hours

Explanation:

If you are going 45 miles per hour, you will travel 45 miles in 1 hour. It will take you 2 hours to travel 90 miles at a speed of 45 miles per hour.

3 0

3 years ago

Read 2 more answers

Sam travels west for 30 kilometers, then turns south and travels another 45 kilometers. What is Sam's displacement from his orig

Gre4nikov [31]

Answer: C ) 75 kilometers

Explanation: 30 + 45 = 75

7 0

2 years ago