How many days does it take for a free to grow?

What is the y component of a vector that is 125 m at 312 degrees?

kondaur [170]

Explanation:

Physical activity can provide immediate benefits. Physical activity can help to boost your mood, reduce stress, improve sleep, and sharpen your focus — benefits that can be especially important during stressful times. Physical activity can also help you live a longer, healthier life by reducing the risk of many common chronic diseases, like type 2 diabetes and some cancers.

8 0

3 years ago

Help Me Fast Please!!

rusak2 [61]

Answer:

There is only a beat frequency when the frequency heard (perhaps a tuning fork) is different from the frequency from the object in question (piano string, etc.).

The beat frequency equals the difference of the frequencies of the sources.

5 0

3 years ago

The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the more distant star Tau Ceti, whi

dimaraw [331]

Answer:

(a) Apparent magnitude is the perceived brightness of an astronomical object

Absolute magnitude is the luminosity based on viewing an object from a 32.6 light-years distance

Bolometric magnitude is the total emitted radiation of a star

(b) The apparent magnitude of the star Tau Ceti = 3.51

(c) The distance between the Earth and Tau Ceti is 1.13 × 10¹⁴ km

Explanation:

(a) Apparent magnitude is an estimate of an astronomical objects' brightness as the object is perceived from the Earth

The absolute magnitude is the magnitude an object appears to have when viewed from a 32.6 light-years distance while having constant transfer of its luminosity that is not affected by cosmic dust and objects present in the line of sight

The bolometric magnitude of a star is the sum total of the star's radiation released over all electromagnetic spectrum wavelengths

(b) The apparent magnitude of the star Tau Ceti is found using the following equation;

$m_{2}-m_{1} = -2.512\times log\left (\dfrac{B_{2}}{B_{1}} \right )$

Where:

m₁ = Apparent magnitude of Tau Ceti

m₂ = Apparent magnitude of Sirius = -1.46

B₁ = Brightness of Tau Ceti

B₂ = Brightness of Sirius

$\left \dfrac{B_{2}}{B_{1}} \right = 95$

Hence we have;

$-1.46-m_{1} = -2.512\times log\left (95 \right )$

m₁ = -1.46 + 2.512 × log(95) = 3.51

The apparent magnitude of the star Tau Ceti = 3.51

(c) The distance between the Earth and Tau Ceti is found using the following equation;

$m-M = 5\times log\left (\dfrac{d}{10} \right )$

Where:

m = Apparent magnitude of Tau Ceti

M = Absolute magnitude of Tau Ceti = 5.69

d = The distance between the Earth and Tau Ceti

Which gives;

$3.51-5.69 = 5\times log\left (\dfrac{d}{10} \right )$

$\therefore \dfrac{d}{10} = 10^{-0.436} = 0.3664$

d = 10 × 0.3664 = 3.664 parsecs = 3.664 × 3.0857 × 10¹⁶ m

d = 1.13 × 10¹⁴ km.

4 0

3 years ago

What is the approximate size of the Earth's magnetic field? (dont ask me to specify thats what the question is and im as confuse

Olegator [25]

Answer:

The Earth's magnetic field intensity is roughly between 25,000 - 65,000 nT (.25 -.65 gauss).

Explanation:

To measure the Earth's magnetism in any place, we must measure the direction and intensity of the field. The Earth's magnetic field is described by seven parameters. These are declination (D), inclination (I), horizontal intensity (H), the north (X), and east (Y) components of the horizontal intensity, vertical intensity (Z), and total intensity (F). The parameters describing the direction of the magnetic field are declination (D) and inclination (I). D and I are measured in units of degrees, positive east for D and positive down for me. The intensity of the total field (F) is described by the horizontal component (H), vertical component (Z), and the north (X) and east (Y) components of the horizontal intensity. These components may be measured in units of gauss but are generally reported in nanoTesla (1nT * 100,000 = 1 gauss). The Earth's magnetic field intensity is roughly between 25,000 - 65,000 nT (.25 - .65 gauss). Magnetic declination is the angle between magnetic north and true north. D is considered positive when the angle measured is east of true north and negative when west. The magnetic inclination is the angle between the horizontal plane and the total field vector, measured positive into Earth. In older literature, the term “magnetic elements” is often referred to as D, I, and H.

8 0

3 years ago

What is the smallest particle ionic compound

Lerok [7]

Answer:

this

Explanation:

Covalent compounds are formed when electrons are shared. The smallest particle in an ionic compound is an ion and the smallest particle in covalent compound are molecules.

8 0

4 years ago