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4 years ago

Why do people bleed .-.

Physics

2 answers:

Maslowich4 years ago

5 0

Because the liver helps to regulate blood clotting

SashulF [63]4 years ago

3 0

Because the liver helps to regulate blood clotting, people with liver disease (for example, hepatitis or cirrhosis) also have a tendency to bleed easily. Most commonly, easy or excessive bruising occurs because the skin and blood vessels are fragile.

Hope This Helped! :3

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A hollow conducting sphere with an outer radius of 0.295 m and an inner radius of 0.200 m has a uniform surface charge density o

IrinaK [193]

Answer:

a. $6.032\times10^{-6}C/m^2$

b. $6.816\times10^5N/C$

Explanation:

#Apply surface charge density, electric field, and Gauss law to solve:

a. Surface charge density is defined as charge per area denoted as $\sigma$

$\sigma=\frac{Q}{4\pi r_{out}^2}$ , and the strength of the electric field outside the sphere $E=\frac{\sigma _{new}}{\epsilon _o}$

Using Gauss Law, total electric flux out of a closed surface is equal to the total charge enclosed divided by the permittivity.

$\phi=\frac{Q_{enclosed}}{\epsilon_o}\\\\\sigma=\frac{Q}{4\pi r_{out}^2}\\\\\sigma=\frac{0.370\times 10^{-6}}{4\pi \times (0.295m)^2}\\\\=3.383\times10^{-7}C/m^2$ #surface charge outside sphere.

$\sigma_{new}=\sigma_{s}-\sigma\\\\\sigma_{new}=6.37\times10^{-6}C/m^2-3.383\times10^{-7}C/m^2\\\\\sigma_{new}=6.032\times10^{-6}C/m^2$

Hence, the new charge density on the outside of the sphere is $6.032\times10^{-6}C/m^2$

b. The strength of the electric field just outside the sphere is calculated as:

From a above, we know the new surface charge to be $6.032\times10^{-6}C/m^2$ ,

$E=\frac{\sigma _{new}}{\epsilon _o}\\\\=\frac{6.032\times10^{-6}C/m^2}{\epsilon _o}\\\\\epsilon _o=8.85\times10^{-12}C^2/N.m^2\\\\E=\frac{6.032\times10^{-6}C/m^2}{8.85\times10^{-12}C^2/N.m^2}\\\\E=6.816\times10^5N/C$

Hence, the strength of the electric field just outside the sphere is $6.816\times10^5N/C$

5 0

3 years ago

What do we know about the relative strength of the electric field around each object?

Vsevolod [243]

Answer:

A charged object in an electric field experiences a force due to the field. The electric field strength, E, at a point in the field is defined as the force per unit charge on a positive test charge placed at that point.

Explanation:

6 0

3 years ago

Pls help!! 1 example of a conductor and 1 example of a insulator in your EVERYDAY world.

satela [25.4K]

Answer:

Conductors:Aluminum, copper, car cables

Insulator: rubber, glass

6 0

3 years ago

How can non visible radiation be used

DanielleElmas [232]

Here are some popular applications of
non-visible electromagnetic radiation:

-- listen to the weather and music on the radio
-- watch a football game on TV
-- change the TV channel from the couch, using the 'remote'
-- make toast
-- warm leftover meatloaf in the "microwave"
-- make a call with your cellphone
-- text a friend with your 'smartphone'
-- surf the internet in your house without wires (with WiFi in the house)
-- use GPS in the car
-- get a new set of dental X-rays made
-- spend 30 minutes in a tanning bed
-- look at your friend's face

3 0

4 years ago

Read 2 more answers

A solid ball of mass M = 2.0 kg and radius R = 0.25 m starts from rest at a height h = 3.0 m above the bottom of the path. It ro

Lady bird [3.3K]

Answer:

6.48 m/s

Explanation:

We are given that

Mass,M=2 kg

Radius,R=0.25 m

Height,h=3 m