The speed of molecules is indirectly related to a measurement called _____.
2 answers:
Answer : (c) temperature is the correct option.
Explanation :
The speed of molecules is directly proportional to temperature. If the temperature of the system is increased, the molecules start vibrating i.e. their kinetic energy increases which in turn increase its velocity.
From kinetic theory of gases,
........(1)
where,
R is the gas constant
T is temperature
M is molar mass
So, from equation (1) it is clear that velocity is directly proportional to temperature.
Hence, the correct option is (B) " temperature"
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Answer:
The weight lifter would not get past this sticking point.
Explanation:
Generally torque applied on the weight is mathematically represented as
T = F z
To obtain Elbow torque we substitute 4000 N for F (the force ) and 2cm for z the perpendicular distance
So Elbow Torque is
To obtain the torque required we substitute 300 N for F and 30cm
So the Required Torque is
Now since it mean that the weight lifter would not get past this sticking point