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3 years ago

Which statement best explains why radon and krypton do not bond easily with other elements?

Physics

2 answers:

mote1985 [20]3 years ago

6 0

Answer.B

Explanation:

pentagon [3]3 years ago

4 0

Answer:

the answer is B

Explanation:

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A machine part has the shape of a solid uniform sphere of mass 245 g and diameter 4.30 cm . It is spinning about a frictionless

Alla [95]

Answer:

Angular acceleration, $\alpha =9.49\ rad/s^2$

Explanation:

It is given that,

Mass of the solid sphere, m = 245 g = 0.245 kg

Diameter of the sphere, d = 4.3 cm = 0.043 m

Radius, r = 0.0215 m

Force acting at a point, F = 0.02 N

Let $\alpha$ is its angular acceleration. The relation between the angular acceleration and the torque is given by :

$\tau=I\times \alpha$

I is the moment of inertia of the solid sphere

For a solid sphere, $I=\dfrac{2}{5}mr^2$

$\alpha =\dfrac{\tau}{I}$

$\alpha =\dfrac{F.r}{(2/5)mr^2}$

$\alpha =\dfrac{5F}{2mr}$

$\alpha =\dfrac{5\times 0.02}{2\times 0.245\times 0.0215}$

$\alpha =9.49\ rad/s^2$

So, its angular acceleration is $9.49\ rad/s^2$ . Hence, this is the required solution.

3 0

3 years ago

How dense the medium is in the compression part of the wave, and how

ivolga24 [154]

How dense the medium is in the compression part of the wave and how rare the medium is in the rarefaction part of the wave is a measure of the longitudinal wave's amplitude.

4 0

3 years ago

do you think the government should eencourage more aquaculture, the use of new fish species, or both? explain

vodomira [7]

I believe the government should encourage both children(society) do not know much about either because they are not taught enough about that subject/topic.

3 0

3 years ago

How do you do the bisects?

Evgen [1.6K]

Answer:

Answer Below!!

Explanation:

STEP 1: Draw a straight line with a ruler. STEP 2:Put the pin of a compass at the end of the line you want to bisect.Set the compass to more than half the length of the line and draw an arc crossing the line. STEP 3: Keep the width of the compass the same, and from the opposite end of the line draw another arc.

Hope I Helped

4 0

2 years ago

Assume that the pictured magnet is being moved into the solenoid. If the polarity of the magnet is reversed and then moved into

dangina [55]

Answer:

The direction of the induced emf is revered, and hence the direction of the induced current.

Explanation:

When the polarity of the magnet is revered, the direction of the magnetic field is also reversed, and therefore, according to Faraday's law

$\varepsilon = NA\dfrac{dBcos(\theta)}{dt}$

$\varepsilon = -NA\dfrac{dBcos(\theta)}{dt}$

since the magnetic field changes sign from $B$ to $-B$ .

Hence, the effect is that the direction of the emf induced is reversed, which also reverses the direction of the induced current in the solenoid.

P.S:<em> The cause of confusion here is the direction of magnetic field lines from the magnetic</em>, and so you must remember that <em>field lines begin at the north pole and end at the south pole.</em>

4 0

3 years ago