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Jet001 [13]
3 years ago
6

An operating electric circuit consists of a lamp and a length of nichrome wire connected in series to a 12- volt battery. As the

temperature of the nichrome is decreased, what happens to the equivalent resistance of the circuit and the power developed by the lamp?
Physics
1 answer:
Natalka [10]3 years ago
4 0
The resistance of the wire will decrease as its temperature is decreased due to reduced hindrance in the flow of electrons. This means the current will increase. Electric power:
P = I²/R
The power produced will thus increase since the current is increasing and the resistance decreasing.
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Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angl
vazorg [7]

Answer:879.29 N-m

Explanation:

Given

mass of first child m_1=44 kg

distance of first child from tree is r_1=1 m

tree is inclined at an angle of \theta =27^{\circ}

mass of second child m_1=27 kg

distance of second child from tree is r_2=2.1 m

Weight of first child=m_1g=431.2 kg

Weight of second child=m_2g=264.6 kg

Torque of first child weight=m_1g\cos \theta \cdot r_1

T_1=44\times 9.8\times \cos 27\times 1=384.202 N-m

Torque of second child weight=m_2g\cos \theta \cdot r_2

T_2=27\times 9.8\times \cos 27\times 2.1=495.096 N-m

Net torque T_{net}=T_1+T_2=384.202+495.096=879.29 N-m

6 0
4 years ago
Suppose a magnetic reversal accoured today .
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They would have the magnetic parts of the rocks oriented differently. This leaves a trace that allow scientists to find out how often this actually happens (as far as I remember, it's on average once in 800 000 years)
3 0
4 years ago
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6 0
3 years ago
S Five particles with equal negative charges -q are placed symmetrically around a circle of radius R. Calculate the electric pot
Scrat [10]

The four distinct charges' combined potentials make up the potential in the square's center. The amount of the charge and the distance from the charge both affect the potential caused by a point charge.

Therefore, the center's total potential is V=4V1=ks4 q.

<h3>What is a charge?</h3>

Due to the physical characteristic of electric charge, charged material experiences a force when it is exposed to an electromagnetic field. An object that has no net charge is said to be neutral. Classical electrodynamics is the name given to an earlier theory of the interactions of charged particles.

You can have positive or negative electric charges (commonly carried by protons and electrons respectively). opposing charges attract one another whereas similar charges repel one another.

To learn more about charge from the given link:

brainly.com/question/9194793

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6 0
2 years ago
What is the most potentially destructive way to deal with stress while at college? a. texting friends back home b. watching TV c
diamong [38]

Answer:

Option (C)

Explanation:

Recreational drugs are usually referred to those drugs or medicines that are legally or illegally used without any prescription given by the doctors. These drugs include marijuana, cocaine, alcohol, nicotine, heroin, and many others. These drugs provide relaxation for a shorter period of time, but using of these substances, it makes an individual addicted to drugs.

So, recreational drugs are one of the most potentially destructive ways to handle stress when a student is in college.

Thus, the correct answer is option (C).

7 0
3 years ago
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