Answer:
400grams
Explanation:
Mass<em><u> </u></em><em><u>i</u></em><em><u>s</u></em><em><u> </u></em><em><u>d</u></em><em><u>e</u></em><em><u>n</u></em><em><u>s</u></em><em><u>i</u></em><em><u>t</u></em><em><u>y</u></em><em><u> </u></em><em><u>×</u></em><em><u> </u></em><em><u>v</u></em><em><u>o</u></em><em><u>l</u></em><em><u>u</u></em><em><u>m</u></em><em><u>e</u></em>
<em><u>0</u></em><em><u>.</u></em><em><u>5</u></em><em><u>×</u></em><em><u>8</u></em><em><u>0</u></em><em><u>0</u></em><em><u>=</u></em><em><u> </u></em><em><u>4</u></em><em><u>0</u></em><em><u>0</u></em><em><u> </u></em><em>g</em><em>r</em><em>a</em><em>m</em><em>s</em>
Only ' A ' is always true.<em> (choice-1)</em>
' B ' is not true when you drop a red hot spoon into cold soup.
' C ' is not true when you drop a red hot marble into a cool swimming pool.
Answer:
1 / f = 1 / p + 1 / q
Explanation:
For this exercise we will use two methods, an analytical method which is to use the constructor equation
1 / f = 1 / p + 1 / q
where f is the focal length, positive for converging lenses and negative for diverging lenses, p and q are the distance to the object and the image respectively
m = h’/ h = - q / p
where m is the magnification, h ’and h are the height of the image and the object.
We will also use a graphical method, where three rays will be traded
1) A ray that passes through the center of the lens and should not
2) a ray that passes through the focal length and comes out parallel to the lens
3) A ray that is horizontal and comes out through the focal from the other side
for this second method see the attachment
the symbol of mass is similar to meter but actually it is different,ve careful
The magnitude of the magnetic force per meter (in nm) exerted on each wire is 3.74 * 10^-3 N/m or 3.74v 8 10 ^6 N/nm.
Magnetic force, enchantment or repulsion that arises between electrically charged debris due to their movement. it's miles the basic pressure accountable for such outcomes as the movement of electric cars and the appeal of magnets for iron.
Magnetic pressure is a compass, a motor, the magnets that keep stuff at the fridge, educate tracks, and new curler coasters. All transferring prices supply upward push to a magnetic subject and the costs that flow thru its regions, revel in a force.
Two items containing charge with the equal path of motion have a magnetic enchantment pressure between them. in addition, gadgets with price transferring in contrary instructions have a repulsive force between them. In our article on magnetic fields we found out how transferring rate surrounds itself with a magnetic field.
explanation is given in the image below.
Force per unit length between two wires ,
F/l = μοI₁I₂/2πd
= 4π * 10^-7 *67 *67 / 2π (24 * 10^-2)
= 2 * 10 ^-7 * 67 *67/24 *10 ^ -2
= 4489/12 * 10^-5
= 3.74 * 10 ^-3 N/m
Learn more about magnetic force here:-brainly.com/question/2279150
#SPJ4