Answer:
Unless they came marked with “N” or “S,” the poles of a magnet look the same. One easy way to tell which pole is north and which is south is to set your magnet near a compass. The needle on the compass that normally points toward the north pole of the Earth will move toward the magnet's south pole.
Explanation:
The penny sank when the boy threw the coin into the fountain because the density of the penny is more than the density of the water.
Option B
<u>Explanation:</u>
Density is the physical property which relates mass and volume of an object. The equation format for density is given as follows:
When the density of an object is more obviously it tends to weigh heavier than the lighter objects. Coin being made of metal is naturally heavier and has more density than water. Denser objects tend to sink in liquids less denser than the objects. Hence, coin sinks in water fountain.
Answer:
Potential energy of the ball would increase
Explanation:
The formula for potential energy of an object is:
Potential Energy (object) = mass x gravity x height
In your question, the value for height is increased when the object (ball) is placed in a higher position. This creates a net positive change in the right-hand side of the formula and since the value of mass and gravity doesn't change because gravity is a constant (meaning it's always 9.8N/kg) and the mass is said to be kept the same, the ball's potential energy would increase.
Answer:
d
the amount of space a substance takes up