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Artemon [7]
3 years ago
8

A graphical representation of the strength of an acid or base.

Physics
1 answer:
guapka [62]3 years ago
7 0

Answer:

pH Scale

Explanation:

I attached a picture of the pH scale too if you needed that as well.

Hope this helped! :)

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How can you prove to be an initiator?
lozanna [386]
An initiator is someone who starts something. Example: She initiated the fight.
6 0
3 years ago
Determine the thrust that a boat with a volume of 1.2m³ receives when it is stranded at sea. The density of seawater is 1020kg /
puteri [66]

Answer:

The maximum possible up-thrust on the boat is 11,995.2 N

Explanation:

According to Archimedes' principle, the thrust received by an object immersed a fluid is equal to the weight of the fluid displaced;

The given parameter of the boat in sea water are;

The volume of the boat = 1.2 m³

The density of seawater = 1020 kg/m³

Density = Mass/Volume

Therefore, Mass = Density × Volume

The maximum volume of water that the boat displaces = 1.2 m³

The mass of the water displaced by the boat = (Density of seawater) × (Volume of seawater displaced)

∴ The maximum possible mass of the water displaced by the boat = 1.2 m³ × 1020 kg/m³ = 1224 kg

The maximum possible mass of the water displaced by the boat, m = 1224 kg

Weight = Mass, m × g

Where;

g = The acceleration due to gravity = 9.8 m/s²

The up-thrust on the boat = The weight of the seawater displaced

∴ The maximum possible up-thrust on the boat = m × g = 1224 kg × 9.8 m/s² = 11,995.2 N

The maximum possible up-thrust on the boat = 11,995.2 N.

3 0
2 years ago
Describe the magnetic field when two unlike magnet poles are close together
MrMuchimi

A Magnet is an object that produces a Magnetic Field; it can be formed of a permanent magnet or an electromagnet. The word magnet comes from the Greek "magnítis líthos", which means "Magnesian Stone". Magnesia is an area in Greece (Now Manisa, Turkey) where deposits of magnetite have been discovered since antiquity.

Magnets come in many shapes but no matter what their shapes are, each magnet has a North Pole and a South Pole.

A Magnetic Field is said to exist in a region if a (Magnetic) Force can be exerted on a Magnet. Magnetic Field Lines (Flux Lines) are imaginary lines representing the direction and strength of the Magnetic Field. They go from the North Pole to the South Pole outside the Magnet, and go from the South Pole to the North Pole inside the Magnet. The density of the Magnetic Field Lines is higher near the Poles, and the Magnetic Force is stronger there.

6 0
3 years ago
A boy runs 40m towards east. he then walks 30m towards north. The boy again runs 50m towards north making an angle of 30° with e
Katena32 [7]

Answer: The displacement is 99.82 meters.

Explanation:

To use a standard notation, we can define:

North as the positive y-axis.

East as the positive x-axis.

If the initial position of the boy is (0, 0)

Then:

"runs 40m towars the east"

The new position is (0, 0) + (40m, 0) = (40m, 0)

"he then walks 30m towards North"

The new position is: (40m, 0) + (0, 30m) = (40m, 30m)

"The boy again runs 50m towards north making an angle of 30° with East."

By making a triangle rectangle, we can find the x and y components for this motion.

Y-component = 50m*cos(30°) = 43.3m

X-component = 50m*sin(30°) = 25m

Then the new position will be:

(40m, 30m) + (43.3m, 25m) = (83.3m, 55m)

Now we want to find the total displacement, this will be equal to the distance between the final position and the initial position.

The distance between two points (ax, ay) and (bx, by) is:

D = √( (ax - bx)^2 + (ay - by)^2)

In this case we want to find the distance between the points  (83.3m, 55m) and (0, 0), this will be:

D = √( (83.3m - 0)^2 + (55m - 0)^2) = 99.82 m

The displacement is 99.82 meters.

5 0
2 years ago
To teach you how to find the parameters characterizing an object in a circular orbit around a much heavier body like the earth.T
PolarNik [594]

Answer:

a)  v = √ G M / r, , b) K = ½ m G M / r, , c)  T = 2 π √ (r³ / GM)

, d)  L = m √ (rGM)

Explanation:

The formula of universal gravitation

     F = G m M / r²

Part A) orbital speed

Let's use Newton's second law

    F = m a

Where the acceleration is centripetal

    a = v² / r

Let's replace

    G m M / r² = m v² / r

    v = √ G M / r

Part B)

Kinetic energy

     K = ½ m v²

     K = ½ m G M / r

Part C)

The orbital period The speed (speed module) is constant, so we can use the relationships

    v = d / t

The distance in the length of the circle

    d = 2π r

    T = t = 2π r / (√ G M / r) = 2π r √(r / GM)

    T = 2 π √ (r³ / GM)

Part D) The angular momentum

     L = I w

The satellite is small, so we can approximate it to a particle

     I = m r²

The angular and linear velocity are related

     v = w r

    w = v / r

    w = √(G M / r) (1 / r)

We replace

    L = m r² 1 / r √(GM / r)

    L = m r √ (GM / r)

    L = m √ (rGM)

Part E) let's calculate the order of magnitude of the quantities

    v = √G M / r

The value of the distance from the plant center to the satellite

    r = Re + h

the height of the satellites is less than 1 10⁶m from the surface of the earth,

    r = 6.37 10⁶ + 1 10⁶ = 7.37 10⁶

    v = √ (6.67 10⁻¹¹ 5.98 10²⁴ / 7.37 10⁶)

    v = √ (5.4 10⁶)

    v ~ 10³ m / s

    K = ½ m G M / r

The satellite mass about 10⁴ kg

    K = ½ 10⁴ 6.67 10⁻¹¹ 5.98 10²⁴ / 7.37 10⁶

    K ~ 10¹¹ J

    U = G m M / r

    U ~ 10¹¹ J

    L = m √ (rGM)

    L = 10⁴ √ (7.37 10⁶ 6.67 10⁻¹¹ 5.98 10²⁴)

    L ~ 10¹⁴ kg m2 / s

8 0
3 years ago
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