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ElenaW [278]
2 years ago
15

The total conversion of 1.00 kilogram of the Sun's mass into energy yields​?

Physics
1 answer:
Virty [35]2 years ago
5 0

The famous equation . . . E = m c² . . . doesn't say anything about where the mass comes from.

The total conversion of 1 kg of ANY mass into energy yields

(1kg) · (c²) Joules of energy.

E = (1 kg) · (c²) = (1 kg) · (299,792,458 m/s)²

<em>E = 8.9876 x 10¹⁶ Joules</em>

To put this in easily understood terms, it's the amount of energy required to keep a 100-watt light bulb shining for 10,402,259,010 days.

(That's about 28.5 million years, at the current length of days and years.)

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In an experiment to measure the wavelength of light using a double slit, it is found that the fringes are too close together to
Mandarinka [93]

Answer:

halve the slit separation

Explanation:

As we know that

In YDS experiment, the equation of fringe width is as follows

\beta = \frac{\lambda D}{d}

where,

D denotes the separation in the middle of screen and slits

d denotes the distance in the middle of two slits

And to increase the Δx we have to decrease the d i.e, the distance between the two slits

Hence, the first option is correct

4 0
2 years ago
What types of atoms compose each type of compound – only metals
Over [174]

Answer:

Key Takeaways

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Explanation:

8 0
2 years ago
What are the two forces that keep a pendulum swinging?
NemiM [27]
The correct answer would be the third option. The two forces that keep a pendulum swinging would be tension and gravity. The force of gravity causes the pendulum to keep it swinging and tension blocks all resistances in order for the motion to continue.
5 0
2 years ago
A light ray strikes a plane mirror at an angle of 23° to the normal. What is the angle between the reflected ray and the mirror?
tiny-mole [99]

Answer:67^{\circ}

Explanation:

Given

Ray of light incident on plane making an angle of 23^{\circ} with normal

Thus incident angle i=23^{\circ}

So according to the law of incidence is equal to angle of reflection

\angle i=\angle r

thus \angle r=23^{\circ}

and angle between mirror and reflected ray =90^{\circ}-23^{\circ}

=67^{\circ}

4 0
2 years ago
Centripetal force Fc acts on a car going around a curve. If the speed of the car were twice as great, the magnitude of the centr
kondaur [170]

Answer:

We need 4 times more force to keep the car in circular motion if the velocity gets double.

Explanation:

Lets take the mass of the car = m

The radius of the arc = r

F=\frac{m\times v^2}{r}

Given that speed of the car gets double ,v' = 2 v

Then the force on the car = F'

F'=\frac{m\times v'^2}{r}  ( radius of the arc is constant)

F'=\frac{m\times (2v)^2}{r}

F'=4\times \frac{m\times v^2}{r}

We know that F=\frac{m\times v^2}{r}

Therefore F' = 4 F

So we can say that we need 4 times more force to keep the car in circular motion if the velocity gets double.

6 0
2 years ago
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