In the 2008 Olympics, Jamaican sprinter Usain Bolt shocked the world as he ran the 100-meter dash in 9.69 seconds. Determine Usa
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The volume of hydrogen gas produced from the reaction at STP is 8517.32 mL.
Volume is a measure of occupied 3-dimensional space. Its miles are often quantified numerically using SI-derived gadgets or with the aid of various imperial devices. The definition of length is interrelated with the extent.
Volume is the amount of 3-dimensional space occupied by means of a liquid, strong, or gas. commonplace devices used for specific quantities include liters, cubic meters, gallons, milliliters, teaspoons, and ounces, even though many different units exist.
Volume is the measure of the ability that an object holds. as instance, if a cup can hold 100 ml of water up to the brim, its extent is stated to be one hundred ml. volume can also be described as the amount of space occupied by a 3-dimensional object.
The given reaction can be written as,
Zn + H2SO4 ZnSO4 + H2
Mass of Zn = 65.38 g/mol
Mass of H = 1 g/mol
Mass of H2= 2 g/mol
From this equation, one mole or 65.38 g of Zn produces 2 g of H2.
Thus 25 g of Zn produce,
25×2/65.38 = 0.76g of
One mole of H2 is 2 g,
Therefore no.of moles of .76 g H2 is,
0.76/2 = 0.38 moles
one mole of H2 contains 22414 mL of volume at STP.
Therefore volume occupied by 0.38 moles is,
0.38×22414 = 8517.32ml
Thereby volume of hydrogen gas produced from the reaction at STP is 8517.32 mL.
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The given question is incomplete. The complete question is as follows.
A 8.00-kg box is suspended from the end of a light vertical rope. A time-dependent force is applied to the upper end of the rope, and the box moves upward with a velocity magnitude that varies in time according to v(t)=(2.00m/s2)t+(0.600m/s3)t2. What is the tension on the rope when the velocity is 15 m/s.
Explanation:
It is known that relation between acceleration and time is as follows.
a =
a = ............ (1)
As it is given that velocity is 15 m/s.
15 =
t = 3.604 sec
Substitute the value of "t" in equation (1) as follows.
a =
a =
= 6.325
Now, we will calculate the tension as follows.
T = mg + ma
= 8[9.81 + 6.325]
= 129.08 N
thus, we can conclude that tension on the rope is 129.08 N when the velocity is 15 m/s.