Answer:
.5m per second to the west
Explanation:
distance divided by time
Answer:
Explanation:
There are two forces acting on the person as he's standing on the scale in the elevator:
- Its weight, , downward, with m = 45.0 kg being his mass and g = 9.8 m/s^2 being the acceleration of gravity
- The normal reaction exerted by the scale on the person, N, upward, which is equal to the value read on the scale, N = 460 N
Using Newton's second law, we can write
Where a is the acceleration of the person (and of the elevator). Solving for a,
And since we chose positive as the upward direction, the acceleration is upward.
<span>The elevator must be accelerating
</span>
This is the case because the tension is not equivalent to the load's weight, which means there must another force acting on the system.
Answer:
The current drawn by the motor from the line is 4.68 A.
Explanation:
Given that,
Internal resistance of the dc motor, r = 3.2 ohms
Voltage, V = 120 V
Emf in the motor,
We need to find the current drawn by the motor from the line. A dc motor with its rotor and field coils connected in series, applying loop rule we get :
I is current drawn by the motor
So, the current drawn by the motor from the line is 4.68 A. Hence, this is the required solution.
here our distance is given with respect to ticket booth
initial distance is given 50 m from the booth
So our initial position is
now after this finally we reach at final position
now change in position is given as
<em>so change in position is 45 m in magnitude and since we are coming closer to the booth so its coming negative in sign</em>