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erica [24]
3 years ago
11

Perform an Internet search to learn about grounding wires, fuses, and circuit breakers. Specifically,

Physics
1 answer:
Eduardwww [97]3 years ago
6 0
A ground wire provides a conducting path to the earth which is separate and independent from the path of an electrical appliance. Also, a ground wire is an additional pathway for an electric current to safely return to the ground without imposing danger to anyone in the event that a short circuit might occur. This is particularly important for shock hazard since it forces the breaker to trip by supplying a path to the ground if ever a hot wire comes in contact with a metal case of the appliance.

A fuses and circuit breakers limit the current which can possibly flow in a circuit. The metal filament present in the fuse will melt and break the connection. On the other hand, the circuit breaker with its bimetallic strip's heating effect causes a bending and tripping of a spring-loaded switch.


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a boat sailing against the current experiences an acceleration of -11 m/s^2 if the boats initial velocity is 44 m/s upstream, ho
valentinak56 [21]

Answer:4s

Explanation:

3 0
3 years ago
The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is
Kruka [31]

Given Information:  

Elapsed time = t = 6 seconds

Required Information:

Distance = d = ?

Answer:

Distance = d = 2.058 km

Explanation:

We know that the speed of sound in the air is given by

v = 343 m/s

The relation between distance, speed and time is given by

distance = speed*time

substituting the given values yields,

distance = 343*6

distance = 2058 m

There are 1000 meters in 1 km so

d = 2058/1000

d = 2.058 km

Therefore, the storm is about 2.058 km away when elapse time between the lightning and the thunderclap is 6 seconds.

3 0
3 years ago
explain why the different thermal conductivities of metal and plastic are important in the design of the bowl.
ololo11 [35]

Answer:

metal conducts heat faster than wood. which means the metal conducted heat away from your hand (or whatever it is) faster than wood.

Explanation:

just because they feel warm/cold doesn't always mean that it is warm/cold. if they both were sitting at room temp for a long time, then both will eventually reach the temp of the room. even though they are the same temp the metal will feel colder than the wood because of the thermal conductivity of the metal compared to the wood.

5 0
2 years ago
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Morgarella [4.7K]
I believe it is true . Somebody correct me if I’m wrong!
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Answer:

An atomic Nucleus

Explanation:

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