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svlad2 [7]
3 years ago
7

Why are metals good conductors of both heat and electricity?

Physics
1 answer:
serious [3.7K]3 years ago
5 0
They are both good conductors if both heat and electricity due to the sea of delocalized electrons that is floating around without getting bonded to an atom.

Such electrons can flow around freely to conduct heat and electricity.
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A shopper pushes a 5.32 kg grocery cart with a 12.7 N force directed at -28.7° below horizontal. A friction force of 8.33 N push
atroni [7]

Answer:

0.8214 m/s^2

Explanation:

Fnet= Fpushed - Ffriction

Fpushed = 12.7N      Ffriction = 8.33N

Fnet = 12.7N - 8.33N = 4.37N

Fnet= mass(acceleration)

Fnet = 4.37N    mass = 5.32 kg

4.37N = 5.32 kg(acceleration)

acceleration= 0.8214 m/s^2

3 0
3 years ago
Volume equals 4÷3 times pi times nine to the power of 3
Tcecarenko [31]

Answer:

V=972π

The equation I used... V=4/3π(9)^3

4 0
1 year ago
Hellllllllllllllo who is alive​
bearhunter [10]

Answer:

you

Explanation:

cause your reading this and breathing

5 0
2 years ago
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Antoinette was diagnosed with hypertension, a noncommunicable disease in which her blood pressure is higher than normal. What is
Oxana [17]

Answer:

She was obese and had a diet high in salt intake.

Explanation:

higher blood pressure is condition known as hypertension which is the main cause of many heart problems which can be life threatening. In obese people. high level of fats inside the blood vessels which can cause blockage inside and can lead to heart problems.

high concentration of salts intake also disturbs the salts concentration in the blood vessels. The disturbance in salt concentration is the function of the kidney to remove it. the increase concentration also  cause increase in blood pressure which leads to hypertension.  

5 0
3 years ago
An electromagnet is strong enough to lift 200 kg of mass. If you double the number of turns of wire around the core and triple t
VLD [36.1K]

Answer:1200 kg

Explanation:

Given

Electromagnet can lift a mass of  200\ kg

Magnetic force necessary to hold mass is proportional to Magnetic field

and magnetic field (B) is proportional to NIA

where N=no of turns

I=current in the magnet

A=area of cross-section

When we double the no of turns and triple the current then

N becomes 2 N

I becomes 3 I

therefore magnetic field becomes 6 times

Thus magnetic force becomes 6 times and we can say that electromagnet can hold the 6 times of given weight

i.e. 6\times 200=1200\ kg

4 0
3 years ago
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