3 years ago

Science and technology are interdependent. Advances in one lead to advances in the other.Give an example of this phenomenon.

1 answer:

6 0

The development of the microscope, a key innovation in the field of technology, lead to the development of Cell Theory, a key innovation in the field of science.

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If the cart has potential energy of 5,000 J and kinetic energy of 2,750 J. How much mechanical energy does the cart have?

Dahasolnce [82]

Answer: 7750 J

Explanation:

Mechanical energy is potential energy added to kinetic energy.

5000 + 2750 J = 7750 J

6 0

3 years ago

Why is copper NOT used as a filament?

chubhunter [2.5K]

Answer:

Short answer, because copper wire does not have high resistance.

Explanation:

6 0

2 years ago

A proton of mass m is at rest when it is suddenly struck head-on by an alpha particle (which consistsof 2 protons and 2 neutrons

antiseptic1488 [7]

Answer:

3/5 v

Explanation:

The computation of speed will the alpha particle have after the collision is shown below:-

In a perfectly elastic the kinetic energy and collision the momentum are considered.

The velocity of the particles defines the below equation:

$VA_f=(\frac{m_A-m_B}{m_A+m_B})VA_i+(\frac{2m_B}{m_A+m_B})VB_i$

As we know that

$VA_i=v$

$\\VB_i=0$

Here, we consider A is the alpha particle and B is the proton and now by the above values we can solve the equation which is below:-

$VA_f=(\frac{4m-m}{4m+m})v$

$\\VA_f=\frac{3m}{5m}v$

$\\VA_f=\frac{3}{5}v$

Therefore the correct answer is $\frac{3}{5}v$

7 0

3 years ago

During a test crash and airbag in place to stop at dummies forward motion the dummies mass is 75 kg if the net force of the dumm

strojnjashka [21]

The dummy's acceleration is 11 m/s^2
(also known as 11 meters per sec. per sec.)

a = F/m
= 825 N/75 kg
= 11 m/s^2

3 0

3 years ago

a stone thrown on a glass window smashes the window pane to pieces but a bullet from the gun passes through making a clean hole.

Svet_ta [14]

Answer:

becouse the stone is bigger than the bullet

Explanation:

so ya

8 0

3 years ago

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