Answer:
For the non covalent bonding interaction the following statement is incorrect.
" Charge induced dipole interactions are inversely proportional to the sqaure of the distance between the two atoms"
because charge induced dipole interactions are directly proportional to the square of the distance between the two atoms.
Explanation:
Answer:
549 gallons
Explanation:
1 gallon of radioactive material was added to unknown volume of gasoline which we will represent as V in gallons.
Initially the 1 gallon gives a 5500 counts per minutes (cpm)
After adding to an underground gasoline tank, the total volume becomes
(V + 1) gallons
1 gallon was withdrawn from the underground and gave 10 cpm
using simple proportion and assuming the gasoline has mixed together
1 gallon gave 10 cpm
10 (V + 1) gallons should give 5500cpm
10 (V+1) = 5500cpm
divide both side by 10
V+1 = 5500 /10 = 550
V = 550 -1 = 549 gallons
Answer:
Explanation:
A component of 150 N in vertical direction will reduce the magnitude of reaction force.
reaction force exerted by the floor
= mg - 150 sin 30
where m is mass of the crate .
the magnitude of the horizontal component of the 150-newton force
150 cos30
= 130 N
This force tries to pull the crate in forward direction with acceleration but it has no acceleration . It is so because frictional force of equal magnitude acts on it in opposite direction which makes the net force acting on it equal to zero.
Hence frictional force is equal to 150 cos 30.
= 130 N .
Assuming both billiard balls have the same mass, conservation of momentum says
where m = mass of both billiard balls, and v₁ and v₂ = their initial velocities, and v₁' and v₂' = their final velocities. The masses are the same so the exact value of m is irrelevant. The first ball has initial speed 5 m/s and the second is at rest, so
After the collision, the first ball has speed 4.35 m/s and is moving at angle of 30° below the original path, so
Then the second ball has final velocity vector
so it moves with speed
at an angle of
or about 60.5° above the original line of motion.