All categories

4 years ago

Which words describe the composition of the inner planets ? Select three options,

Physics

2 answers:

IgorLugansk [536]4 years ago

7 0

Answer:a b c

Explanation: I’m not sure tho

Molodets [167]4 years ago

6 0

Answer:

b,a

Explanation:

bc u just past the lesson

You might be interested in

An example of a solution is

LenaWriter [7]

A solution is a homogeneous mixture such as salt water

5 0

3 years ago

2. Which of the following is a true statement.

lorasvet [3.4K]

Answer:

Sound travels slower than light

Explanation:

Sound travels at around 1/3 km per second, while light travels around 300,000 km per second.

Also, this is the reason you see the lightning before you hear the thunder.

I hope this helped.

5 0

3 years ago

Read 2 more answers

A hoop, a solid cylinder, a spherical shell, and a solid sphere are placed at rest at the top of an inclined plane. All the obje

iogann1982 [59]

Answer:

Solid sphere will reach first

Explanation:

When an object is released from the top of inclined plane

Then in that case we can use energy conservation to find the final speed at the bottom of the inclined plane

initial gravitational potential energy = final total kinetic energy

$mgh = \frac{1}{2}mv^2 + \frac{1}{2}I\omega^2$

now we have

$I = mk^2$

here k = radius of gyration of object

also for pure rolling we have

$v = R\omega$

so now we will have

$mgh = \frac{1}{2}mv^2 + \frac{1}{2}(mk^2)(\frac{v^2}{R^2})$

$mgh = \frac{1}{2}mv^2(1 + \frac{k^2}{R^2})$

$v^2 = \frac{2gh}{1 + \frac{k^2}{R^2}}$

so we will say that more the value of radius of gyration then less velocity of the object at the bottom

So it has less acceleration while moving on inclined plane for object which has more value of k

So it will take more time for the object to reach the bottom which will have more radius of gyration

Now we know that for hoop

$mk^2 = mR^2$

k = R

For spherical shell

$mk^2 = \frac{2}{3}mR^2$

$k = \sqrt{\frac{2}{3}} R$

For solid sphere

$mk^2 = \frac{2}{5}mR^2$

$k = \sqrt{\frac{2}{5}} R$

So maximum value of radius of gyration is for hoop and minimum value is for solid sphere

so solid sphere will reach the bottom at first

7 0

3 years ago

Why does humus tend to increase with the clay content of soil? A. As the clay content increases, the amount of plant lignin in t

Kipish [7]

<span>As the clay content increases, there is more surface area in the soil for organic matter to adsorb to, which decreases the rate of decomposition.</span>

7 0

3 years ago

Read 2 more answers

A wire runs left to right and carries a current in the direction shown. What is the direction of the magnetic field at point Z?

konstantin123 [22]

The direction of the magnetic field at point Z; Into the screen

5 0

3 years ago

Read 2 more answers