Electromagnetic radiation waves:
They can be either infared radiation or visible light
We cannot see I fared radiation but it is how some energy is transferred
Answer:
0.176m from the flagpole, westward.
Explanation:
Let the Eastward be the positive direction. So initially runner A is at position -6km, running with velocity of 9km/h while runner B is at position 5km running at a velocity of -8km/h. We can conduct the following equation for their distances over the same time t
When A an B meets, they are at the same position and at the same time. So
So where they meet is 0.176m from the flagpole, westward.
Answer:
1) henry moseley established a periodic table that arranges the elements by atomic number.
2) the atomic number increases from left to right on the periodic table.
3) metalloids have the characteristics of both metals and nonmetals.
Henry Gwyn Jeffreys Moseley (1887–1915) proposed that the number of positive nuclear charges (protons) in atom is equal to its atomic number in the periodic table.
Metalloids create a "staircase" down the periodic table.
For example, germanium (symbol: Ge) is a lustrous, hard, grayish-white metalloid in the carbon group.
Explanation: