Answer:
If a neutral atom gains electrons, then it will become negatively charged. If a neutral atom loses electrons, then it become positively charged.
Answer:
B
Explanation:
The correct option for the question is B that is salt water. In salt water, the density of water is higher so the pressure at the end of tube containing salt water will be greater. As according to the hydrostatic law the pressure at a given point will be directly proportional to the distance travelled as well.
Answer:
144Ns
Explanation:
Impulse is the product of force and change in time or a measure of the change in momentum. Mathematically, Impulse is given as
J = FΔt
Where
J = Impulse,
F = Force,
Δt = change in time.
Due to the varying force, we know that the impulse varies at different points in the motion. Hence, the Net Impulse will be the addition of the individual impulses, i.e.
J = ΣJᵢ
J = J₁ + J₂ + J₃
J = F₁Δt₁ + F₂Δt₂ + F₃Δt₃
=> J = (24*2) + (24*4) + (0*2)
J = 48 + 96 + 0
J = 144 Ns
Answer:
Mg is the symbol for Magnesium. Atomic #- 12
Explanation:
Answer:
Total time = 10.667 seconds
Explanation:
For the first 12m
V² = u² + 2as
10.5² = 0² + 2a(12)
110.25 = 24a
a = 4.59375 m/s²
V = u + at
10.5 = 0 + 4.59375t
t = 10.5/4.59375
t = 2.286 seconds
For the remaining race
100-12 = 88m
He travels at a constant speed for 88m
S = ut + 1/2(at²)
But a = 0
S = ut
88= 10.5t
t = 88/10.5
t = 8.38.seconds
Total time = 2.286 + 8.381
Total time = 10.667 seconds
