Because the elevator moves at a constant speed, it's in equilibrium and the net force acting on it is zero. Then the tension in the cable exactly equals the magnitude of the elevator's weight, which is
(3000 kg) (9.80 m/s²) = 29,400 N
Paper..pencils...tables, walls...everything that is man made science played a huge factor in it because the first science was when some hairy dude was like i wonder what happens when i do this...same thing with food and drinks..how do you think milk was made..some dude was like hmmm..i wonder..and i think you can figure out the rest..hope i helped
An atom with a greater number of protons than electrons will be positively charged. An atom with a a greater number of electrons will be negatively charged.
The initial angular speed of the fan will be 55.0 rad/sec. The angular speed of the fan decreases to 84.7 rad/s in 2.96 s.
<h3>What is angular acceleration?</h3>
Angular acceleration is defined as the pace of change of angular velocity with reference to time.
Given data;
Final angular speed,
Initial angular speed, 
Time period,t= 2.96 s
Angular deceleration = 47.2 rad/s²

Hence the initial angular speed of the fan will be 55.0 rad/sec.
To know more about angular acceleration refer to the link ;
brainly.com/question/408236
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This would be a definition of a machine :D
Machines are moving parts that are used for work and other stuff :D