Answer: 0.70g
The half-life of iron-53 would be 8.51 minutes. So, in 25.53 minutes would be equal to: 25.53 min/ (8.51 minutes/ half-life)= 3 half-life.
Every half-life will reduce the original weight into half. So, the final weight would be:
final weight = original weight * 1/2 ^(time)
final weight = 5.6g * (1/2)^(3 half-life)
final weight = 5.6g * 1/8= 0.7g
Answer:
The potential energy the apple had due to its height is converted to kinetic energy
Explanation:
When an apple falls from the tree to the ground, its <u>energy of position stored as gravitational potential energy is converted to kinetic energy</u>, the energy of motion, as it falls. When the apple hits the ground, kinetic energy is transformed into heat energy.
Answer:
The temperature over the land has become higher than the temperature over the water.
Explanation:
The air over the warmer land becomes heated and rises, and the cooler and denser air over the water moves in to take its place.
A is wrong. Clouds move where the upper air currents take them.
B is wrong. The highest air temperature of the day may still be lower than that of the air over the water.
D is wrong. Higher air temperature over the water would create a land breeze.
Magnesium has 2 valence electrons and 12 electrons.
Hope this helps