All categories

2 years ago

Select all the correct answers.

Physics

2 answers:

crimeas [40]2 years ago

6 0

It keeps the solar wind from reaching earth

Maslowich2 years ago

3 0

Answer:

It keeps the solar wind from reaching Earth.

Explanation:

Solar Wind corresponds to the emission of particles from the solar corona. The mechanism by which the Solar Wind is formed is still not exactly known. So far, it is known that it consists of a plasma composed of electrons, protons and sub-particles like neutrinos. This plasma is composed of particles loaded with ionized atoms with greater weight and which undergo an acceleration caused by the thermonuclear reactions of the Sun, being then fired in all directions with high speeds, reaching approximately 400 km / s. When close to Earth, the particles can reach up to 800 km / s and have densities around 10 particles per cubic centimeter.

The evolution of the studies has already allowed the identification of some effects caused by the Solar Wind. The tails of comets have their orientation defined exactly due to the Solar Wind. Another registered effect is the change in planetary magnetic fields, because the magnetic field protects the planet against the effects of the solar wind, but ends up being damaged.

In addition, the Solar Wind also interferes with the propagation of radio waves, has an effect on the flight track of space vehicles and can directly influence the Earth's climate when solar flares are very violent.

You might be interested in

Exactly one turn of a flexible rope with mass m is wrapped around a uniform cylinder with mass M and radius R.

Dennis_Churaev [7]

Answer:

$\omega=\sqrt{\omega_0^2(\frac{M+m}{M})}$

Explanation:

The rotational kinetic energy when the cylinder is with the rope is:

$E_k=\frac{1}{2}I_c\omega_0^2+\frac{1}{2}I_r\omega_0^2$

where we used the fact that both rope and cylinder hast the same w. This E_k must conserve, that is, E_k must equal E_k when the rope leaves the cylinder. Hence, the final w is given by:

$E_{k1}=E_{k2}\\\\\frac{1}{2}I_c\omega_0^2+\frac{1}{2}I_r\omega_0^{2}=\frac{1}{2}I_c\omega^2\\\\\omega=\sqrt{\omega_0^2(\frac{I_c+I_r}{I_c})}$ (1)

For Ic and Ir we can assume that the rope is a ring of the same radius of the cylinder. Then, we have:

$I_c=\frac{1}{2}MR^2\\\\I_r=mR^2$

Finally, by replacing in (1):

$\omega=\sqrt{\omega_0^2(\frac{M+m}{M})}$

hope this helps!!

7 0

3 years ago

Jamal is skating on a sidewalk. His initial velocity is 0.0 m/s; 35 seconds later his velocity is 5.0 m/s. What is his accelerat

maxonik [38]

Answer:

answer is 0.1428

Explanation:

Data:- vf=5.0 , vi=0.0 , t=35 , a=? so appling first eq of motion vf=vi+at we have to find a=vf-vi/t , a=5.0-0.0/35 , a=5/35 ,a=0.1428m/sec²

5 0

3 years ago

Read 2 more answers

Answer the following questions

zaharov [31]

Answer:

9 - 10N to the left

10 - There is no change on the object

Explanation:

Can I have brainliest answer pls?

7 0

2 years ago

Read 2 more answers

How do you find distance from average velocity and time

AlekseyPX

Answer:

Calculate the total distance travelled by the object - its motion is represented by the velocity-time graph below.

Here, the distance travelled can be found by calculating the total area of the shaded sections below the line.

½ × base × height.

½ × 4 × 8 = 16 m 2

(10 – 4) × 8 = 48 m 2

Explanation:

7 0

2 years ago

A researcher measures the thickness of a layer of benzene (n = 1.50) floating on water by shining monochromatic light onto the f

NNADVOKAT [17]

Answer:

Explanation:

This problem relates to interference of light in thin films .

The condition of bright fringe in thin films which is sandwitched by two layers of medium having lesser refractive index is as follows.

2nt = (2n+1) λ / 2 , n is refractive index of thin layer , t is its thickness , λ is wavelength of light .

2 x 1.5 t = λ / 2 , if n = 0 for minimum thickness.

2 x 1.5 t = 600 / 2 nm

t = 100 nm .

5 0

3 years ago