Answer:
Explanation:
initial velocity, u = 0 m/s
final velocity, v = 30 m/s
Let the mass is m .
Initial kinetic energy, Ki = 1/2 mu² = 0
Final kinetic energy, Kf = 1/2 mv² = 0.5 m x 30 x 30 = 450 m
Specific energy change = change in kinetic energy per unit mass
= 450 m / m = 450 J/kg = 0.45 kJ/kg
Netforce= 32-16
Unbalance
Forward
Answer:
So we want to know what causes the electric charges to flow from one end of the battery to the other like the picture shows. In the battery we have a positive and a negative charge that are separated. They give an electric potential difference also known as voltage. The voltage causes the charge (electrons) to move from the negative pole to the positive pole. That is called the electron flow and that is what is what is actually happening in the electric circuit. The image shows that the current flows from the positive pole to the negative. That is called "conventional current" and it is a matter of convention. Both are caused by the difference in electric potential. So the correct answer is C.
Answer:
Explanation:
Density can be found by dividing the mass by the volume.
The mass is 5.28 grams and the volume is 2 cubic centimeters.
Substitute the values into the formula.
Divide.
The density of the unknown substance is 2.64 grams per cubic centimeter.
The density of a diamond is about 3.5 grams per cubic centimeter. Since 2.64 is not equal to 3.5, the unknown substance is not a diamond.
