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anastassius [24]
3 years ago
6

What total mass must be converted into energy

Physics
2 answers:
Eduardwww [97]3 years ago
7 0

This question apparently wants you to get comfortable
with  E = m c² .  But I must say, this question is a lame
way to do it.

c = 3 x 10⁸ m/s
                                                    E = m c²

                           1.03 x 10⁻¹³ joule  =  (m) (3 x 10⁸ m/s)²

Divide each side by (3 x 10⁸ m/s)²:

                         Mass = (1.03 x 10⁻¹³ joule) / (9 x 10¹⁶ m²/s²)

                                   =  (1.03 / 9) x (10⁻¹³ ⁻ ¹⁶) (kg)

                                   =        1.144 x 10⁻³⁰  kg .    (choice-1)

This is roughly the mass of (1 and 1/4) electrons, so it seems
that it could never happen in nature.  The question is just an
exercise in arithmetic, and not a particularly interesting one.
______________________________________

Something like this could have been much more impressive:
 
The Braidwood Nuclear Power Generating Station in northeastern
Ilinois USA serves Chicago and northern Illinois with electricity.
<span>The station has two pressurized water reactors, which can generate
a net total of 2,242 megawatts at full capacity, making it the largest
nuclear plant in the state.
If the Braidwood plant were able to completely convert mass
to energy, how much mass would it need to convert in order
to provide the total electrical energy that it generates in a year,
operating at full capacity ?

Energy = (2,242 x 10⁶ joule/sec) x (86,400 sec/day) x (365 da/yr)

             =  (2,242 x 10⁶ x 86,400 x 365) joules

             =          7.0704 x 10¹⁶ joules .

How much converted mass is that ?

                                           E  =  m c²

Divide each side by  c² :    Mass  =  E / c² .
c = 3 x 10⁸ m/s

              Mass = (7.0704 x 10¹⁶ joules) / (9 x 10¹⁶ m²/s²)

                        =        0.786 kilogram ! ! !

THAT should impress us !  If I've done the arithmetic correctly,
then roughly  (1 pound  11.7 ounces) of mass, if completely
converted to energy, would provide all the energy generated
by the largest nuclear power plant in Illinois, operating at max
capacity for a year !

</span>
Lorico [155]3 years ago
5 0
     The equivalence between mass and energy is given by:

E=mc^2
  
     Entering the unknowns, we have:

1.03*10^{-13}=m*(3*10^8)^2 \\ m= \frac{1.03*10^{-13}}{9*10^{16}}  \\ \boxed {m=1.14*10^{-30}Kg}

Number 1

If you notice any mistake in my english, please let me know, because i am not native.
You might be interested in
Plz help asap.
stich3 [128]

Answer:

In a primary cell, two electrodes (one of copper and other of zinc) of metal atoms are used. These electrodes are dipped in an electrolyte solution that causes the metals to produce their respective positive and negative ions.

In this way, the flow of charges takes place and supply the electricity to the source.

Unlike a primary cell, a dry cell contains paste of an electrolyte instead of the solution. The contents of electrolyte paste react with each other through a chemical process and convert the chemical energy into electrical energy.

5 0
3 years ago
A young 34-kg ice hockey goalie, originally at rest, catches a 0.145-kg hockey puck slapped at him at a speed of 34.5 m/s. In th
irinina [24]

The concept that we need to give solution to this problem is collision equation given by momentum conservation,

Our values are,

m_2 = 0.145 kg\\u_2 = 34.5 m/s\\m_1 = 34 kg\\u_1 = 0

Then,

Part A) We can here note that the velocity for the puck is zero (there is not a velocity in that direction)

V_{goalie} = \frac{m_1-m_2}{m_1+m_2}V_{01} + \frac{2m_2}{m_1+m_2}V_{02}

V_{goalie} = \frac{34-0.145}{34+0.145}(0)+\frac{2*0.145}{34+0.145}(34.5)

V_{goalie} = 0.2930m/s

Part B ) We apply the same solution but know we note that in the collision for the Goalie the velocity is zero.

V_{puck} = \frac{m_1-m_2}{m_1+m_2}V_{02} + \frac{2m_2}{m_1+m_2}V_{01}

V_{puck} = \frac{34-0.145}{34+0.145}(34.5)+\frac{2*0.145}{34+0.145}(0)

V_{puck} = 34.20m/s

7 0
2 years ago
7.) A neutral atom loses two electrons. Which of the following ions might result? HELP ME ASAP!!!
Setler79 [48]

Answer:

A. Mg+2

Explanation:

im not sure, but since it lost two electrons which have a negative charge it gained two charge.

6 0
3 years ago
Find the force between charges of +10.0 C and -50.0 C located 20.0 cm apart
polet [3.4K]

The magnitude of the electrostatic force between the two charges is 1.12\cdot 10^{14} N

Explanation:

The magnitude of the electrostatic force between two charges is given by Coulomb's law:

F=k\frac{q_1 q_2}{r^2}

where:

k=8.99\cdot 10^9 Nm^{-2}C^{-2} is the Coulomb's constant

q_1, q_2 are the two charges

r is the separation between the two charges

In this problem, we have:

q_1 = +10.0 C

q_2 = -50.0 C

r = 20.0 cm = 0.20 m

Therefore, the force between the charges is

F=(8.99\cdot 10^9) \frac{(10)(-50)}{(0.20)^2}=-1.12\cdot 10^{14} N

where the negative sign means that the force is attractive, since the two charges have opposite sign.

Learn more about electrostatic force here:

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly

4 0
3 years ago
The compound formed from the elements calcium and chlorine is known as
daser333 [38]

Answer:

calcium chloride

Explanation:

an inorganic compound,a salt with the chemical formula CaCl2

6 0
3 years ago
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