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3 years ago

The chart lists the masses of four planets.

Physics

1 answer:

notka56 [123]3 years ago

4 0

Answer:

I didn't understand that all please tell me in Russia

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A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 5.12 g coins stacked over the 24.2 cm mark, th

pashok25 [27]

Answer:

The mass of the meter stick is $1.66054054054g$

Explanation:

Here since the meter stick is in equilibrium position its net torque and net force should be equal to zero

Since at the begging the meter stick is balanced at center of the meter stick that means its center of mass should be present at $50.0cm$

Now lets consider the later case where stick is balanced by two 5.12 g coins .

Here torque due to two coins = $t_{c} = 5.12\times(27.8-24.2)\times2\times9.8$

Torque due to weight of meter stick = $t_{m}$ = $m\times(50-27.8)\times9.8$

where m = mass of the meter stick

Here $t_{c} = t_{m}$ .

Upon equating we will be getting mass of the meter stick = $1.66054054054g$

4 0

3 years ago

Name the force which is responsible for revolution of moon around the earth

katrin [286]

Answer:

<em>Gravitational</em><em> force</em>

Explanation:

............

3 0

2 years ago

Vertically polarized light with an intensity of 36.8 lux passes through a polarizer whose transmission axis is an angle of 51.0°

Annette [7]

Answer:

0.01774 lux

Explanation:

$I_0$ = Polarized light intensity = 36.8 lux

$\theta$ = Angle

Through first filter

$I_1=I_0cos^2\theta\\\Rightarrow I_1=36.8cos^2{51}\\\Rightarrow I_1=14.57\ lux$

Through second filter

$I_2=I_1cos^2\theta\\\Rightarrow I_2=14.57cos^2{88}\\\Rightarrow I_2=0.01774\ lux$

intensity of transmitted light is 0.01774 lux

5 0

3 years ago

_____________(kinetic energy released in matter) specifies the intensity of x-rays at a given point in air at a known distance f

Natali [406]

Answer:

Air kerma

Explanation:

The acronym for the word 'kerma' is $\text{"kinetic energy released per unit mass"}$ . It is the sum or the total of the kinetic energies of the $\text{charged particles}$ that is liberated by the uncharged ionizing radiation in the small sample of a matter, and is divided by the mass of that sample.

It is sometimes used for expressing the radiation concentration that is delivered to a point.

It is used to specify the intensity of the x-rays for any given point in the air at some known distance form the local spot. The total air kerma can be monitored in the fluoroscopic procedure.

8 0

3 years ago

When a bat uses echolocation to determine the distance to an insect, it sends out a sound wave and waits to see how long the sou

ZanzabumX [31]

Answer:

Explanation:

Distance travelled by sound in going to target( insect ) and returning back = 2d ,d is distance of target .

time t = .06 s

speed = distance / time

344.9 = 2d / .06

d = 10.35 m

3 0

4 years ago