Answer:
When the metal is dropped in the solution it turns blue to green because this forms iron sulphate solution and turns the metal copper
Iron sulphate + copper
m = mass of the truck = 23 00 kg
v = speed of the truck down the highway = 32 m/s
K = kinetic energy of the truck = ?
kinetic energy of the truck down the highway is given as
K = (0.5) m v²
inserting the values
K = (0.5) (2300) (32)²
K = (0.5) (2300) (1024)
K = (1150) (1024)
K = 1177600 J
hence the kinetic energy of the truck comes out to be 1177600 J
<span>Force between the balls is:
at 15 m : F(15) = G*500*75/15^2 = G*37500/225
at 20 m : F(20) = G*500*75/20^2 = G*37500/400
Then the ratio will be F(15)/F(20) = (G*37500/225)/(G*37500/400) = 400/225 = 16/9
Solution: Ratio is B) 16/9</span>