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lubasha [3.4K]
3 years ago
13

Why is it dangerous to connect a battery to itself. what is the term used to describe that

Physics
1 answer:
Yuki888 [10]3 years ago
8 0
In the circuit outside of the battery the electrons have to expend all of their energy on the internal resistance of the battery which causes heating
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A 4 kg block is moving at 12 m/s on a horizontal frictionless surface. a constant force is applied such that the block slows wit
weeeeeb [17]

Answer:

Is there a picture?

Explanation:

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3 years ago
A runner starts from rest and attains a speed of 8.00ft/s after 2.00s. What's the runner's acceleration? (keep the answer in ft/
arlik [135]

Answer:

4 ft/s^2

Explanation:

If the velocity is 8ft/s after 2s then to find the acceleration you would use the formula:

\frac{v_f - v_{i} {}}{t} =a

sooooooooo

\frac{8 ft/s - 0 ft/s }{2 s} = \frac{8 ft/s }{2 s} = 4 ft/s^{2}

3 0
2 years ago
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Name two appliance that use electromagnet.
Bess [88]

Answer:

Electromagnets are very widely used in electric and electromechanical devices, including:

Motors and generators.

Transformers.

Relays.

Electric bells and buzzers.

Loudspeakers and headphones.

Actuators such as valves.

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6 0
3 years ago
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Write any three differences between metals and nonmetals​
Alisiya [41]

Metals Non-metals

They are solid at room temperature. They may be solid, liquid and gas at room temperature.

They have high melting and boiling points. They have low melting and boiling points.

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4 0
3 years ago
Starting from the front door of your ranch house, you walk 50.0m due east to your windmill, and then you turn around and slowly
juin [17]

Answer:

velocity = 0.3m/s

speed = 1.21 m/s

Explanation:

The total time it takes to get from the front door to the bench is

t = 27 + 39 = 66 seconds

The net displacement from the front door to the bench is the distance from the front door to the windmill subtracted by the distance from the windmill to the bench

s = 50 - 30 = 20 m

So the average velocity is net displacement divided by total time

v = s / t = 20 / 66 = 0.3 m/s

The total distance from the front door to the bench is the sum of distance from the front door to the windmill and the distance from the windmill to the bench

S = 50 + 30 = 80 m

So the average speed is total distance divided by total time

v = s / t = 80 / 66 = 1.21 m/s

8 0
3 years ago
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