Using a horizontal force of 200N,we intend to move a wooden cabinet across a floor at constant velocity.What is the friction for ce that will be exerted on the cabinet?
1 answer:
Answer:
-200 N
Explanation:
The cabinet moves at constant velocity, so that means there's no acceleration.
Applying Newton's second law to the cabinet:
∑F = ma
F + 200 = 0
F = -200
The friction force is 200 N in the opposite direction.
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C. When there is too little resistance and the current increases
Answer:
Thermal Energy (Heat)
Answer:
I = 4.28 [amp]
Explanation:
To solve this type of problems we must have knowledge of the law of ohm, which tells us that the voltage is equal to the product of resistance by current.
Initial data:
v = 1.5 [volt]
R = 0.35 [ohms]
v = I * R
therefore:
I = 1.5 / 0.35
I = 4.28 [amp]
wavelength = speed/frequency
P = density × gravity acceleration × height
P = 1200 × 9.81 × 15/100
P = 1765.8
