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3 years ago

9

A man pulls on his dog's leash to keep him from running after a bicycle. Which term best describes this example? Select one: A.

negative work B. positive work C. negative force D. positive force

1 answer:

madreJ [45]3 years ago

6 0

C. Negative force. The dog isn't going to learn that way.

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A 30,000-kg freight car is coasting at 0.850 m/s with negligible friction under a hopper that dumps 110,000 kg of scrap metal in

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Explanation:

Given that,

Mass of a freight car, $m_1=30,000-kg$

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3 years ago

A lamp draws a current of 0.50 A when it is connected to a 120 V source? What is the resistance of the lamp?

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Given,
Current (I) = 0.50A
Voltage (V) = 120 volts
Resistance (R) =?
We know that:-
Voltage (V) = Current (I) x Resistance (R)
→Resistance (R) = Voltage (V) / Current (I)
= 120/0.50
= 24Ω
∴ Resistance (R) = 24Ω

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