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PHYSICAL SCIENCE : What are the advantages and disadvantages of using nuclear energy to generate electricity?

Gnesinka [82]

Nuclear energy is EXTREMELY ecofriendly, punching down any fossil fuels and even wind energy. It also is reliable, and has low emissions. However, nuclear energy is somewhat expensive and can go wrong, being dangerous to the environment and people. Along with this, uranium is finite and radioactive waste disposal is really bad.

4 0

3 years ago

A 50.0-kg box is being pulled along a horizontal surface by means of a rope that exerts a force of 250 n at an angle of 32.0° ab

Phoenix [80]

According to Newton's second law, the resultant of the forces acting on the box is equal to the product between its mass and its acceleration:
$\sum F = ma$ (1)

we are only concerned about the horizontal direction, so there are only two forces acting on the box in this direction:
- the horizontal component of the force exerted by the rope, which is equal to
$F_x = F cos \theta = (250N)(\cos 32.0^{\circ} )=212.0 N$
- the frictional force, acting in the opposite direction, which is equal to
$F_f = \mu mg=(0.350)(50.0 kg)(9.81 m/s^2)=171.7 N$

By applying Newton's law (1), we can calculate the acceleration of the box:
$F_x - F_f = ma$
$a= \frac{F_x - F_f}{m}= \frac{212.0 N-171.7 N}{50.0 kg} =0.81 m/s^2$

6 0

3 years ago

2. A 1.54 kΩ resistor is connected to an AC voltage source with an rms voltage of 240 V.

svp [43]

(a) The maximum potential difference across the resistor is 339.41 V.

(b) The maximum current through the resistor is 0.23 A.

(c) The rms current through the resistor is 0.16 A.

(d) The average power dissipated by the resistor is 38.4 W.

<h3>Maximum potential difference</h3>

Vrms = 0.7071V₀

where;

V₀ is peak voltage

V₀ = Vrms/0.7071

V₀ = 240/0.7071

V₀ = 339.41 V

<h3> rms current through the resistor </h3>

I(rms) = V(rms)/R

I(rms) = (240)/(1,540)

I(rms) = 0.16 A

<h3>maximum current through the resistor </h3>

I₀ = I(rms)/0.7071

I₀ = (0.16)/0.7071

I₀ = 0.23 A

<h3> Average power dissipated by the resistor</h3>

P = I(rms) x V(rms)

P = 0.16 x 240

P = 38.4 W

Learn more about maximum current here: brainly.com/question/14562756

#SPJ1

8 0

2 years ago

Which of the following is the most appropriate description of an electric current?

Olenka [21]

Electric current is the flow of charge due to the potential difference between two terminals per unit time. It is denoted by I and its unit is amp. It can be mathematically expressed as I=Q/t.

If this isn’t what your looking for I need the options they gave you

6 0

2 years ago

When an atom is involved in a nuclear reaction:

nataly862011 [7]

I believe the answer would be , it may change from one element to another. I’m saying this because during nuclear transmutation is when a subatomic particle fired at the nucleus of an atom changes into a heavier element , to break the nucleus apart into two nuclei and energy.

4 0

3 years ago