They will repel since opposites attract
Answer:
m = 84.66 kg
Explanation:
given,
tightrope walker across = 30 m
displacement vertically downward = 1 m
force at center = 6250 N
m = 84.66 kg
hence, the mass of the tightrope walker m = 84.66 kg
Answer:
C It will be closer to the mass of Vi–193.
Explanation:
The average atomic mass of vitellium will be closer to the mass of Vi–193.
From the geonormal abundance we can derive the average atomic mass or relative atomic mass of the compound.
Average atomic mass = sum of all the product of the mass of isotope x abundance of isotope
Average atomic mass = (10.861% x 187.9122) + (12.428% x 190.9047) + (76.11% x 192.8938)
Average atomic mass = 20.41 + 23.73 + 146.81 = 190.95amu
Answer:
B) uniform
Explanation:
We can solve this problem by using Boyle's law, which states that:
<em>For a constant mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume.</em>
Mathematically:
where
p is the pressure of the gas
V is its volume
If we apply the equation to the bottle in the problem, we see that:
- when the volume of the bottle (and therefore, of the gas inside) decreases, than the pressure will increase
- viceversa, when the volume of the bottle increases, the pressure will decrease
The amount by which the pressure increases is inversely proportional to the decrease in volume, so the answer depends on how the volume of the bottle decreases: however, if the volume of the bottle decreases uniformly, then we can say that the pressure inside the bottle will also increases uniformly.
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Answer:
(a)0.625s (b)1.569s
Explanation:
a.The ball reaches its maximum height when its speed = 0, or changing from positive to negative. To find out the time t for this we need to get the velocity function by taking the first derivative of the height function:
So when v(t) = 0
b. The ball land back on the ground when s(t) = 0: