Pedro threw a penny into a fountain and it sank to the bottom. Which of the following would explain why the penny sinks?Immersive Reader

A. The mass of the penny is more than the mass of the water.
B. The density of the penny is more than the density of the water.
C. The volume of the penny is more than the volume of the water.
D. The temperature of the penny is more than the temperature of the water.

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

Explanation:

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.

current flows in a wire

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27