The three units used to express pressure are pascal (Pa), atmosphere (atm), and Hg (torr).
Answer:
a. Particles are in constant motion.
Answer:
Work done, W = 255.21 J
Explanation:
It is given that,
Rotational inertia of the wheel,
Angular displacement,
Initial angular velocity,
Final angular velocity,
Firstly finding the angular acceleration of the wheel using the equation of rotational kinematics as :
Work done by the torque is given by :
W = 255.21 J
Out of given options, the correct option for the work done by the torque is 255.21 J. Hence, this is the required solution.
Let the height where we are trapped is H
now to find the time to reach the key at the bottom is given as
now we have
now if the speed of sound is considered to be 340 m/s then time taken by the sound to reach at the top is given as
now the total time is given as
now by solving above equation we have
H = 48 m
now height of one floor is 3 m
so our position must be
The Newton's Laws that BEST describe the situation is Newton's second law of motion.
<h3>
What is Newton's second law of motion?</h3>
Newton's second law of motion states, the force exerted by an object is directly proportional to the product of mass and acceleration of the object.
Also, the law can also be states as force is equal to the rate of change of momentum.
F ∝ Δp
Ft = m(v2 - v1)
The force exerted on the bicyclist by the fence is equal to the change in momentum of the bicyclist. The bicyclist was able to fly over the fence because there is a change in his momentum.
Thus, the Newton's Laws that BEST describe the situation is Newton's second law of motion.
Learn more about Newton's second law of motion here: brainly.com/question/3999427
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