a ball rolls down a rap . A small amount of friction heats up the ball . what energy transformations are taking place ?

Answer:

We can assume that allforceactingontheboxarebalancedinalldirections.

Answer:chlorofluorocarbons (CFCs) could deplete Earth's atmospheric ozone layer, which blocks the sun's damaging ultraviolet rays. When the scientists reported their findings in 1974, CFCs were widely used as refrigerant gases and as propellants in aerosol sprays

Explanation:

Answer:

              NaClO₄

Solution:

Let us calculate the oxidation state of Chlorine in each compound one by one;

1) NaClO

               O.N of Na = +1

               O.N of O = -2

So,

               (+1) + (Cl) + (-2) = 0

               1 + Cl - 2 = 0

               Cl = -1 + 2

               Cl = +1

2) NaClO₃

               (+1) + (Cl) + (-2)3 = 0

               (+1) + (Cl) - 6 = 0

               1 + Cl - 6 = 0

               Cl = -1 + 6

               Cl = +5

3) NaClO₂

               (+1) + (Cl) + (-2)2 = 0

               (+1) + (Cl) + (-4) = 0

               1 + Cl - 4 = 0

               Cl = -1 + 4

               Cl = +3

4) NaClO₄

               (+1) + (Cl) + (-2)4 = 0

               (+1) + (Cl) + (-8) = 0

               1 + Cl - 8 = 0

               Cl = -1 + 8

               Cl = +7

its actually, alpha particles, beta particles, and gamma rays