Acceleration is change is velocity over time. So the change in velocity is 40 and time is 4.5 sec. So the acceleration is 40/4.5=8.89 m/s^2
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Answer:
<h2>1704 kW</h2>
Explanation:
To solve for the power consumed by the trains motor we have to employ the formula for power which is
<em>Power= current * voltage</em>
Given that
voltage V= 800 V
current I= 2130 A
Substituting in the formula for power we have
Power= 2130*800= 1704000 watt
Power = 1704 kW
This is the amount of energy consumed, transferred or converted per unit of time
Hence the power consumed by the trains motor is 1704 kW
Answer:
<h2>E. 650N</h2>
Explanation:
step one:
given
length of stretcher= 2m
weight of stretcher=100N
Wayne weighs =800N
distance of Wayne weighs from chris's end= 75cm= 0.75m
The force that Chris is exerting to support the stretcher, with Wayne on it, can be computed by taking moments of the weight of the stretcher and Wayne weighs about Chris's end, the end result is the reaction at Chris's end
Taking moment about Chris's end
The moment of Wayne weight 75cm from Chris+ Half the weight of stretcher 1m from Chris
0.75*800+50*1=0
600+50=0
650N
Answer:
The value is
Explanation:
From the question we are told that
The radius is 
The electric field is
at a distance 
Generally the electric field at a distance
is mathematically represented as
Note: the reason we are using this
formula is because 
Here k is the coulomb constant with value
=>
Generally the electric field at a distance
is mathematically represented as
Note: the reason we are using this
formula is because 
Now dividing 

=> 
=> 