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Xelga [282]
3 years ago
9

Which of the following best describes a noncontact force

Physics
1 answer:
Sonja [21]3 years ago
7 0

Answer:

a force that is able to act at a distance

Explanation:

:)

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Create a series circuit with a 10-volt battery and four 10-ohm resistors, as shown. Measure the current. A. Based on the voltage
iogann1982 [59]

Answer:

0.25 A

Resistance= 40 ohms

Explanation:

The first, and perhaps most important, the relationship between current, voltage, and resistance is called Ohm's Law, discovered by Georg Simon Ohm and published in his 1827 paper. Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual V=IR. Any Electrical device or component that obeys “Ohms Law” that is, the current flowing through it is proportional to the voltage across it ( I α V ), such as resistors or cables, are said to be “Ohmic” in nature.

Since we are not in a laboratory, we can not experimentally measure the current but it can be calculated from ohm's law.

Given that the four resistors are connected in series and

Req= R1 + R2 + R3 + R4

Since all are four ohm resistors

Req= 10 + 10+10+10 = 40ohms

Then;

V= 10 V

R= 40ohms

I= ???

From;

V=IR

I= 10/40

I= 0.25 A

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3 years ago
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. According to Piaget’s stages of cognitive development, the child does not differentiate between self and other objects. The ch
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When a star begins to run out of fuel, what two types of stars can it become
Nikolay [14]

Answer:

A red giant or red super giant then a white dwarf

Explanation:

This also depends on what the star classification was to begin with.

7 0
3 years ago
Which statement best describes scientific theories?
mariarad [96]

Answer:

the answer is A

Explanation:

Scientific theories attempt to explain an entire group of related phenomena.

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A solenoid of length 0.700 m having a circular cross-section of radius 5.00 cm stores 6.00 µJ of energy when a 0.400-A current r
Lorico [155]

Answer:

N/l = 104

Explanation:

Energy stored in the inductor is given by the formula

U = \frac{1}{2}Li^2

now we have

6\times 10^{-6} = \frac{1}{2}L(0.400)^2

now we have

L = 7.5 \times 10^{-5}

now we have

L = \frac{\mu_0 N^2 \pi r^2}{l}

7.5 \times 10^{-5} = \frac{4\pi \times 10^{-7} N^2 \pi(0.05)^2}{0.7}

N = 73 turns

now winding density is turns per unit length

N/l = 104

7 0
3 years ago
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