Answer:
4.99 mg of vitamin C are in the beaker.
Explanation:
Given that,
Weight of vitamin = 0.0499 g
Molar mass = 176.124 g/mol
Weight of water = 100.0 ml
We need to calculate the mg of vitamin C in the beaker
We dissolve 0.0499 g vitamin C in water to from 100.0 ml solution.
100 ml solution contain 49.9 mg vitamin C
Now, we take 10 ml of this vitamin C solution in breaker
Since, 100 ml solution =49.9 mg vitamin C
Therefore,
Hence, 4.99 mg of vitamin C are in the beaker.
Answer:
C.) T = 1.20s
Explanation:
From equation of motion,
S = ut + ½gt²
S = 7m
g = 9.8m/s²
U = 0m/s (since he starts from rest)
t = ?
S = ut + ½gt²
7 = 0 * t + ½ * 9.8 * t²
7 = 0 + 4.9t²
t² = 7 / 4.9
t² = 1.42857
t = √(1.42857)
t = 1.195s
t = 1.20s
Answer:
Explanation:
When a force is applied to an object over a certain period of time, it is said to apply an impulse to the object. The magnitude of the impulse is given by:
J=F*Δt
When an impulse is provided to an object, the momentum of the object will change, as in:
J=Δp=
So given:
Initial momentum
Applied force
J=
F*Δt=
On the outer layer of human skin
