C is the correct answer but the best possible answer is that work is done when a force is imposed on an object and the object moves in the same direction as the force
Hope this helps!
374.5m/s
Explanation:
acceleration, a = 9.8m/s²
distance, s = 210m
final velocity, v = 380m/s
unknown:
Initial velocity, u = ?
Solution:
We need to apply one of the equations of motion to solve this problem. The most fitting one is:
V² = U² + 2as
U is the unknown:
U² = V² - 2as
U² = 380² - 2x 9.8 x 210
U² = 144,400 - 4,116 = 140284
U = √140284 = 374.5m/s
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Answer:
Decline of water levels drought, groundwater pumping Disturbance of the soil digging through soil layers, soil removal, drilling. Point-source of water leaking water/sewer pipes, injection of water.
Explanation:
The correct option is B. Decrease the length of the wire between the switch and the battery.
<h3>
Resistivity of wire</h3>
The resistivity of a wire is the measure of the opposition to the flow of current offered by the wire.
ρ = RA/L
RA = ρL
R = ρL/A
where;
- ρ is resistivity of the wire
- R is resistance of the wire
- L is length
- A is area
Decrease in length of the wire will cause a decrease in the resistance of the wire, and it will increase the current flowing in the wire, causing the bulb to glow brighter.
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