Answer:
75
Explanation:
Power is current times voltage:
P = IV
Voltage is current times resistance:
V = IR
Therefore:
P = I²R
Given I = 0.62 A and R = 195 Ω:
P = (0.62 A)² (195 Ω)
P ≈ 75 W
Two vectors of unequal magnitude can never sum to zero. If they point along the same line, since their magnitudes are different, the sum will not be zero.
That two information would be "Velocity" & "Time"
We Know = Displacement = Velocity * Time
Hope this helps!
Answer:
F= 5.71 N
Explanation:
width of door= 0.91 m
door closer torque on door= 5.2 Nm
In order to hold the door in open position we need to exert an equal and opposite torque, to the door closer torque, on the door.
so wee need to exert 5.2 Nm torque on the door.
If we want to apply minimum force to exert the required torque we need to apply force perpendicularly on the door knob (end of door) so that to to greater moment arm.
T= r x F
T= r F sin∅
F= T/ (r * sin∅)
F= 5.2/ (0.91 * 1)
F= 5.71 N
