Lila is a track and field athlete. She must complete four laps around a circular track. The track itself is a 400 meter track an
1 answer:
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Answer:
The correct option is C
Explanation:
From the question we are told that
The distance between axles of the car is
The position of the car's center of mass is
Now we can evaluate the distance of the center of mass to the rear axle as follows
substituting values
assuming the car is at equilibrium, taking moment about the center of mass
=>
=>
substituting values
Note [
is the front axle weight and
is the rear axle weight ]
Answer : The mass of ice melted can be, 3.98 grams.
Explanation :
First we have to calculate the moles of ice.
where,
Q = energy absorbed = 27.2 kJ
= enthalpy of fusion of ice = 6.01 kJ/mol
n = moles = ?
Now put all the given values in the above expression, we get:
Now we have to calculate the mass of ice.
Molar mass of ice = 18.02 g/mol
Thus, the mass of ice melted can be, 3.98 grams.