Which component measures the potential difference across a branch in a circuit? A.switch. B.resistor. C.ammeter. D.voltmeter.
2 answers:
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Answer:
v = 0.349 m/s
Explanation:
If you borrow your mom's car to drive 128 m to the store, but you go cruising instead and drive a total distance of 1256 m in 3600s.
We need to find your speed during the trip. It is equal to the total distance divided by time taken.
He has done cruising instead and drive a total distance of 1256 m.
So,
So, the speed of the person during the trip is 0.349 m/s.
Answer:
The spring constant is 4159.02 N/m.
Explanation:
Given:
Mass of the ball (m) = 79.5 g = 0.0795 kg [1 g = 0.001 kg]
Height of the ball above spring (h) = 51.3 cm = 0.513 m [1 cm = 0.01 m]
Compression in the spring (x) = 4.57537 cm = 0.0457537 m
Total vertical displacement of the ball is equal to the sum of height above spring and compression of the spring. So,
Total vertical height (h+x) = 51.3 cm + 4.57537 cm = 55.87537 cm = 0.5587537 m
Now, as per energy conservation, the total energy of the ball at any position is always a constant.
So, energy possessed by the ball the highest point is equal to the energy possessed by the ball at the lowest point.
Energy at the highest point is due to gravitational potential energy only and energy at the lowest point is due to elastic potential energy only.
So, GPE = EPE
Here 'k' is the spring constant.
Now, plug in all the values and solve for 'k'. This gives,
Therefore, the spring constant is 4159.02 N/m.