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3 years ago

The Sl temperature scale used in science is the

Physics

2 answers:

sdas [7]3 years ago

5 0

Kelvin is the SI scale of temperature.

alisha [4.7K]3 years ago

4 0

THE SI TEMPERATURE SCALE IS "KELVIN"

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A small car and a large bus have the same kinetic energy, which is traveling faster?

juin [17]

C same speed

it is the same speed

8 0

3 years ago

Read 2 more answers

Electrons are continuously being knocked out of air molecules by cosmic ray particles from space. Once the electrons are free, t

nata0808 [166]

(a) $1.25\cdot 10^{-14} J$

The change in potential energy of the electron is given by:

$\Delta U=q E d$

where

$q=1.6\cdot 10^{-19}C$ is the magnitude of the electron's charge

$E=150 N/C$ is the magnitude of the electric field

d = 520 m is the distance through which the electron has moved

Substituting into the equation, we find

$\Delta U=(1.6\cdot 10^{-19}C)(150 N/C)(520 m)=1.25\cdot 10^{-14} J$

(b) 78 kV

The potential difference the electron has moved through is given by

$\Delta V=Ed$

where

$E=150 N/C$ is the magnitude of the electric field

d = 520 m is the distance through which the electron has moved

Substituting into the equation, we find

$\Delta V=Ed=(150 N/C)(520 m)=78,000 V=78 kV$

4 0

3 years ago

A pressure cooker cooks a lot faster than an ordinary pan by maintaining a higher pressure and temperature inside. the lid of a

BlackZzzverrR [31]

Answer:

$m=40.816\ gm$

Explanation:

Given;

The operational pressure of the cooker, $P=10^5\ Pa (gauge)$

area of the opening, $a=4\ mm^2$

We know that the gauge pressure is measured with respect to the atmospheric pressure. As the atmospheric pressure acts on all the components of the system being observed so, we only need to counter the gauge pressure.

As the petcock sits on the opening of the cross-section so, it balances the built-in pressure due to its weight.

<u>Hence:</u>

$m.g=P\times a$

where:

$m=$ mass of the petcock

$g=$ acceleration due to gravity

$m\times 9.8=10^5\times 4\times 10^{-6}$

$m=40.816\ gm$

6 0

3 years ago

I NEED HELP ON THIS QUESTION!

GarryVolchara [31]

Forward because things that are in motion stay in motion.

Hope that helped!

~Izzy

4 0

3 years ago

Read 2 more answers

A new planet is discovered that has twice the Earth's mass and twice the Earth's radius. On the surface of this new planet a per

kirza4 [7]

Answer:

option B

Explanation:

Radius of new planet,R' = 2R

Mass of the earth, M' = 2 M

R and M is the Radius and Mass of the earth.

Weight of the person on earth = 500 N

Weight of the person in the new planet = ?

We know acceleration due to gravity is calculated by using formula

$g = \dfrac{GM}{R^2}$

now, acceleration due to gravity on the new planet

$g' = \dfrac{GM'}{R'^2}$

$g' = \dfrac{G(2M)}{(2R)^2}$

$g' =\dfrac{1}{2} \dfrac{GM}{R^2}$

$g' =\dfrac{g}{2}$

here acceleration due to gravity is half in new planet, so weight will also be half on the new planet.

Weight on the new plane is equal to $\dfrac{500}{2}$ = 250 N

correct answer is option B

5 0

3 years ago