2 years ago

What makes a substance, such as aluminum, a good conductor?

1 answer:

8 0

Answer:

For a material to be a good conductor, the electricity passed through it must be able to move the electrons; the more free electrons in a metal, the greater its conductivity.

You might be interested in

Four resistors , R1=12ohms, R2= 15 ohms , R3= 18 ohms and R4=10 ohms are connected to 6 v battery in series what is the total re

morpeh [17]

Answer:

55 ohms

Explanation:

if it was series circuit, then you just need to add all the resistances

6 0

3 years ago

(GIVING BRAINLIEST) do what the following image says.

Delicious77 [7]

Answer:

that pink part that circles around is the pancreas

8 0

2 years ago

Read 2 more answers

The Earth orbits the Sun because of the competing forces of _________________ and _______________________.

kherson [118]

The two competing forces that keeps earth orbiting the sun is gravity and inertia

3 0

2 years ago

The human heart is a powerful and extremely reliable pump. Each day it takes in and discharges about 7500 L of blood. Assume tha

gregori [183]

The answers are:

a) $Work=125,923.61J$

b) $Power=1.46watt$

Why?

It seems that you forgot to write the questions of the problem, however, in order to help you, I will try to complete it.

The questions are:

a) How much work does the heart do in a day?

b) What is its power output in watts?

So, solving we have:

We need to convert from liter to cubic meters in order to use the given information, so:

$1L=0.001m^{3}\\\\7500L*\frac{0.001m^{3} }{1L}=7.5m^{3}$

Also, we need to find the mass given the density of the blood.

$1050}\frac{kg}{m^{3}}*7.5m^{3}=7875kg$

Now, calculating how much work does the heart do in a day, we have:

$Work=Fd=mgh\\\\Work=7875kg*9.81\frac{m}{s^{2}}*1.63m=125,923.61J$

Then, calculating what is the power output and its horsepower, we have:

$Power=\frac{Work}{time}\\\\Power=\frac{125,923.61J}{86,400s}=1.46watt$

Have a nice day!

7 0

3 years ago

Which object would have the most kinetic energy?

ivolga24 [154]

Answer:

I believe the answer is C

Explanation:

The mouse would run faster because it has mass.

6 0

3 years ago

Read 2 more answers