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3 years ago

Need help with this please

Physics

2 answers:

choli [55]3 years ago

8 0

4. The core is where fusion occurs when Nuclear Thermal Fusion happens, which means the core is fusing hydrogen to create helium. This energy passes through both the convection and radiation zone. If you need any more help with this subject, I'll be able to help.

tigry1 [53]3 years ago

6 0

Energy is produced by nuclear fusion in the core of every star.

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4. A spring is stretched 0.5 m from equilibrium. The force constant (k) of the

makkiz [27]

Answer:

31.25

Explanation:

The formula for the potential energy of a spring is $\frac{1}{2}kx^2$ , where x is the distance in meters the spring is stretched. Plugging in the numbers that you are given, you get $\frac{1}{2}\cdot 250\cdot 0.25=31.25$ . Hope this helps!

8 0

3 years ago

Read 2 more answers

A colony of troglodytes has been in a lengthy feud with

Troyanec [42]

Answer:

h = 181.73 m

Explanation:

given,

distance between the neighbors = 42 m

speed of the rock rolling = 6.9 m/s

vertical velocity of ball = 0 m/s

height of the cliff = ?

time taken by the ball to travel 42 m

d = s x t

s is the horizontal speed of the ball equal to 6.9 m/s

$t =\dfrac{d}{s}$

$t =\dfrac{42}{6.9}$

t = 6.09 s

same time will be taken by the ball to travel vertical distance

Using equation of motion

$h = u t + \dfrac{1}{2}gt^2$

$h = 0+ \dfrac{1}{2}gt^2$

$h = \dfrac{1}{2}\times 9.8 \times 6.09^2$

h = 181.73 m

7 0

3 years ago

Why does an empty plate not heat up in the microwave?

Leona [35]

Because the plate doesn't have water, and it's water which is heated by the microwave

7 0

3 years ago

When drawing a free body diagram, which of the following things would NOT be included

Neko [114]

C. Mass of the object

5 0

3 years ago

g Suppose that you charge a 3 F capacitor in a circuit containing eight 3.0 V batteries, so the final potential difference acros

Vladimir79 [104]

The complex, highly technical formula for capacitors is

Q = C V

Charge = (capacitance) (voltage)

Charge = (3 F) (24 V)

Charge = 72 Coulombs

The positive plate of the capacitor is missing 72 coulombs worth of electrons. They were sucked into positive terminal of the battery stack.

The negative plate of the capacitor has 72 coulombs worth of extra electrons. They came from the negative terminal of the battery stack.

You should be aware that this is a humongous amount of charge ! An average lightning bolt, where electrons flow between a cloud and the ground for a short time, is estimated to transfer around 15 coulombs of charge !

The scenario in the question involves a "supercapacitor". 3 F is is no ordinary component ... One distributor I checked lists one of these that's able to stand 24 volts on it, but that product costs $35 apiece, you have to order at least 100 of them at a time, and they take 2 weeks to get.

Also, IF you can charge this animal to 24 volts, it will hold 864J of energy. You'd probably have a hard time accomplishing this task with a bag of leftover AA batteries.

7 0

3 years ago