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KengaRu [80]
3 years ago
12

A light bulb whose resistance is 240 ohms is connected to a 120 voltage source. What is the current through the bulb?

Physics
1 answer:
Sedaia [141]3 years ago
7 0

Answer:

0.5A

Explanation:

Using R = \frac{V}{I},

R is the resistance (in Ohms)

V is the voltage (in V)

I is the current (in A)

240=\frac{120}{I}

I = 0.5A

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What does a power source act like?
nevsk [136]

Answer:

In most cases, the electricity source is an outlet, battery, or generator. The power supply works to convert the power from the source into the correct format and voltage. Because a variety of options exist, the specific power supply function depends on whether it needs to regulate energy or convert power.

4 0
3 years ago
What element is created when hydrogen atoms fuse together in the sun’s core?
Lilit [14]

Answer:

It's Helium.

Explanation:

The superficial layers of the star compress the core as an effect of its own gravity. Therefore, atoms will be closer to each other in the core, allowing them to be combined.

A nuclear reaction occurs when light elements combine into heavier elements (that is known as nucleosynthesis). Different ways in which that can happen exist, but the most common in the Sun, according to its mass, is the Proton-Proton chain reaction. In that fusion reaction two atoms of Hydrogen are combined to form Helium.

Remember that a Helium atom is composed of two Protons and two Neutrons.

The Proton-Proton chain works in the following way:

^{1}H +^{1}H = ^{2}H + \nu + e^{+}

                 

Two Protons combine each other (^{1}H) and one Deuterium (^{2}H)  is gotten, and one Neutrino (\nu), and one Positron (e^{+}) are emitted from them.

       

^{2}H +^{1}H = ^{3}He + \gamma

       

A deuterium and Proton combine each other and a Helium three nucleus(^{3}He) is gotten, and a gamma ray (\gamma) is emitted.

                 

^{3}He +^{3}He = ^{4}He + ^{1}H + ^{1}H

             

Two Helium three nucleus combine and a Helium atom  (^{4}He) is gotten, and two Protons are emitted.

                       

So, when hydrogen atoms fuse together helium is created.

3 0
3 years ago
What is simple harmonic motion​
juin [17]

simple harmonic motion is a special type of periodic motion or oscillation where the restoring force is directly proportional to the displacement and acts in the direction opposite to that of displacement.

5 0
4 years ago
Read 2 more answers
The position of a ball as a function of time is given by
Andre45 [30]

Answer:

x = -6.5 meters

Explanation:

The position of a ball as a function of time t is given by :

x=3\ m+(-5\ m/s)t..................(1)

Where t is time in seconds

We need to find the position of the ball at 1.9 s. It can be simply calculated putting t = 1.9 s in equation (1) as :

x=3+(-5)(1.9)

x = -6.5 meters

So, the position of the ball at 1.9 seconds is -6.5 meters. Hence, this is the required solution.

6 0
4 years ago
Bird bones have air pockets in them to reduce their weight. This also gives them an average density significantly less than that
mixas84 [53]

Answer:

mas of water displaced = 41.4 g

Explanation:

Weight in air = True weight = 45 g

Apparent weight = 3.6 g

Apparent weight = True weight - Buoyant force

Buoyant force = 45 g - 3.6 g = 41.4 g

Weight of water displaced = Buoyant force

Weight of water displaced = 41.4 g dyne

mas of water displaced = 41.4 g

8 0
3 years ago
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