when you hold a warm bowl of soup the temperature of the palms of your hands increases this is an example of

Physics

1 answer:

bearhunter [10]3 years ago

7 0

The answer is allllllllllllllllllllllllllllllllllllllllllllllllllllllllllll the way CONDUCTION

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In the nucleus of an atom, two protons are separated by a distance of 10^-13 m. What is the Coloumb force between them? The char

sleet_krkn [62]

Answer:

$F=0.0231\ N$

Explanation:

<u>Electrostatic Force </u>

When two point charges $q_1$ and $q_2$ are placed at a distance d, they exert a force to each other whose magnitude can be computed by the Coulomb's formula

$\displaystyle F=\frac{k\ q_1\ q_2}{d^2}$

Where k is the constant of proportionality

$k=9.10^9\ Nw.m^2/c^2$

The information provided is

$d=10^{-13}\ m$

$q_1=q_2=+ 1.602 x 10^{-19}\ C$

Computing the Coloumb force between them

$\displaystyle F=\frac{9x10^9\ 1.602 x 10^{-19} \ 1.602 x 10^{-19} }{(10^{-13})^2}$

$\boxed{F=0.0231\ N}$

7 0

3 years ago

A wire is carrying current vertically downward. What is the direction of the force due to Earth's magnetic field on the wire?

andrey2020 [161]

Answer: The correct option is A ( horizontally towards the east)

Explanation:

Magnetic field is a region around a magnet or a current- carrying conductor, where a magnetic force is experienced. The magnetic effect of electric current was first discovered in the early 1820 by Oersted. Using a wire that had current flowing through it and a pivoted magnetic needle, he discovered that the direction of deflection depended on the direction of the current and whether the wire was above or below the needle.

From the way the needle turns when current when current carrying wire is held parallel to it, he therefore concluded that:

--> a current has magnetic field all round it,

--> the magnetic field is in a direction perpendicular to the current.

The above discovery was now modified in Fleming's left hand rule which states that when conductor carrying current is placed in a magnetic field, the conductor will experience a force perpendicular to both the field and the flow of current.

Therefore from the question, a vertical wire carrying current in DOWNWARD direction is placed in a HORIZONTAL magnetic field directed to the NORTH. The direction of the force on the wire is to the EAST.

4 0

3 years ago

How much voltage (in terms of the power source voltage bV) will the capacitor have when it has started at zero volts potential d

Archy [21]

Answer:

The voltage is $V = 0.993V_b$