<span>Since the equation is F = ma the acceleration would change by a factor of 2, since a = v/2. The force would double.</span>
Answer:
12/13 kg, 18/13 kg
Explanation:
Let the masses are m and m'.
acceleration, a = 3.2 m/s^2
Force, F = 30 N
Tension, T = 18 N
By the diagram, using Newton's second law
F - T - m'g = m' a .... (1)
T - mg = ma ..... (2)
Substitute the values of F, T and a in equation (1) and equation (2)
30 - 18 = m' (9.8 + 3.2)
12 = 13 m'
m' = 12/ 13 kg
And, 18 = m (9.8 + 3.2)
m = 18/13 kg
Hello!
The quickest and simplest way would be to take it to a jeweler or pawn shop and get it checked.
However, another way is: make a light, tiny scratch on the item using a small nail file or similar rough object. Choose a spot that is not noticeable if you want to keep it's value. apply a small drop of nitric acid to the scratch (use a dropper if you have one)
If there is no reaction, then the piece is probably made from real gold
I hope this helps, and have a nice day!
Ha! Lot of words but the question itself is easy.
The answer is 2.5 times 10 to the 5th power.
The main part of the numbers has the decimal point placed after the first digit.
Then for what number of power, you just count the number of decimal places moved.
I hope this helps you.
Answer:
The charge at the center of the conducting sphere is zero.
Explanation:
A principle of conductor materials is that the electric field inside a conductor in electrostatic state is always zero. The gauss law says that the flux of a electric field in a closed surface is proportional to the charge enclosed by the surface. Then if the Electric field inside of a conductor is zero, imperatively the charge anywhere inside the conductor is zero too, so the charge at the center of the sphere is zero.