Which is NOT true related to the following equation?

Why does the satellite not fall while revolving the earth

hoa [83]

Answer:

Satellites don't fall from the sky because they are orbiting Earth. Even when satellites are thousands of miles away, Earth's gravity still tugs on them. Gravity--combined with the satellite's momentum from its launch into space--cause the satellite go into orbit above Earth, instead of falling back down to the ground.

8 0

3 years ago

One of the dangers of tornados and hurricanes is the rapid drop in air pressurethat is associated with such storms. Assume that

Oksi-84 [34.3K]

Answer:

The net outward force is exerted on a square window of the house is $4.5930\times10^{4}\ N$ .

Explanation:

Given that,

Pressure = 1.02 atm

External air pressure = 0.910 atm

Distance = 2.03 m

We need to calculate the net outward force

Using formula of force

$F= PA$

Where, P = pressure

F = force

A = area

Put the value into the formula

$F=(1.02-0.910)\times101325\times(2.03)^2$

$F=4.5930\times10^{4}\ N$

Hence, The net outward force is exerted on a square window of the house is $4.5930\times10^{4}\ N$ .

6 0

4 years ago

A narrow beam of white light is incident on a sheet of quartz. Thebeam disperses in the quartz, with red light (Î»Ë700nm)traveli

uysha [10]

Answer:

The index of refraction of quartz for violet light is 1.47.

Explanation:

It is given that, a narrow beam of white light is incident on a sheet of quartz.

The beam disperses in the quartz, with red light at an angle, $\theta_r=26.3^{\circ}$ wrt to the normal and violet light traveling at an angle of $\theta_v=25.7^{\circ}$

The index of refraction of quartz for red light is 1.45.

We need to find the index of refraction of quartz for violet light.

Using Snell's law of red light as follows :

$\mu_a\sin\theta_i=\mu_r\sin\theta_r$

Here,

$\mu_a$ is the refractive index of air

$\theta_i$ is the angle of incidence

We can find the value of angle of incidence as follows :

$\sin\theta_i=\dfrac{\mu_r \sin\theta_r}{\mu_a}\\\\\sin\theta_i=\dfrac{1.45\times \sin(26.3)}{1}\\\\\theta_i=\sin^{-1}(0.642)\\\\\theta_i=39.79^{\circ}$

Now again using Snell's law for violet light as follows :

$\mu_a\sin\theta_i=\mu_v\sin\theta_v\\\\\mu_v=\dfrac{\mu_a\sin\theta_i}{\sin\theta_v}\\\\\mu_v=\dfrac{1\times \sin(39.79)}{\sin(25.7)}\\\\\mu_v=1.47$

So, the index of refraction of quartz for violet light is 1.47.

6 0

4 years ago

Simple True/False Physics Question

MArishka [77]

True because when a bar magnet or any magnet is cut in half they then start to have their own South and North Pole.

5 0

3 years ago

A ship sets out to sail to a point 123 km due north. An unexpected storm blows the ship to a point 112 km due east of its starti

statuscvo [17]

Answer:

Explanation:

We shall represent the point of destination and point of new starting point in vector form .

i and j will represent east and north .

point of destination = 123 j

starting point = 112 i

distance between the two

D = 123 j - 112 i

magnitude of D = √ ( 123² + 112² )

= 166.35 km

Direction of D

Tanθ = - 123 / 112

= - 1.09

θ = 132.54 degree from east in positive angle .

8 0

3 years ago