Answer: 18.02 g/mol
The average mass of one H2O molecule is 18.02 amu. The number of atoms is exact, the number of moles is exact; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.
Answer:
a) p = 95.66 cm, b) p = 93.13 cm
Explanation:
For this problem we use the constructor equation
where f is the focal length, p and q are the distances to the object and the image, respectively
the power of the lens is
P = 1 / f
f = 1 / P
f = 1 / 2.25
f = 0.4444 m
the distance to the object is
the distance to the image is
q = 85 -2
q = 83 cm
we must have all the magnitudes in the same units
f = 0.4444 m = 44.44 cm
we calculate
1 / p = 0.010454
p = 95.66 cm
b) if they were contact lenses
q = 85 cm
1 / p = 0.107375
p = 93.13 cm
Answer:
The force is
Explanation:
From the question we are told that
The tangential resistive force is
The mass of the wheel is m = 1.80 kg
The diameter of the wheel is
The diameter of the sprocket is
The angular acceleration considered is
Generally the radius of the wheel is
=>
=>
Generally the radius of the sprocket is
=>
=>
Generally the moment of inertia of the wheel is mathematically represented as
=>
=>
Generally the torque experienced by the wheel due to the forces acting on it is mathematically represented as
Here is the force acting on the sprocket
So
Generally the torques that will cause the wheel to move with is mathematically represented as
So
car starts from rest
final speed attained by the car is
acceleration of the car will be
now the time to reach this final speed will be
so it required 1.39 s to reach this final speed
Answer:
Mass of the vehicle and small bug.
Explanation:
- By Newton's third law, force on bug and vehicle will be same when they collide with each other irrespective of their masses.
- But according to Newton's second law, force is mass times acceleration. Since the force on each mass is same, the smaller mass will accelerate more and the heavier mass will accelerate less for the same force.
- Therefore the acceleration of bug will be very greater than vehicle as the mass of the bug is very small as compared to vehicle.
Learn more about Newton's law.
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