give the SI unit. For physics

Answer:

the correct answer is C

Explanation:

When we express that the scale is 1:30 we mean that the objects of the realization are reduced by a factor of 30 in the graph, for example a distance of 30 cm in the graph is represented by a distance of 1 cm.

Therefore something that in the graph has n value to bring it to real size must be multiplied by the scale.

Applying this to our case if there is

               10 boulder on the chart

in reality there are #_boulder = 10 30

                                #_boulder = 300 boulder

so the correct answer is C

Answer: Acceleration

Explanation: In this case its most likely acceleration as it has the definition of quick change in velocity. Therefore, the answer is acceleration.

Acceleration refers to the rate of the change in the velocity , therefore the correct answer is option B .

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As given in the problem statement we have to find out which terminology from the given list of options refers to the rate of change in velocity .

Speed refers to the rate of the change in the distance, while magnitude refers to the numerical quantity of any measured quantity .

The acceleration of any material = rate of the change of the velocity of the material

Thus , Acceleration refers to the rate of the change in the velocity, therefore the correct answer is option B.

To learn more about acceleration from here , refer to the link given below ;

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Answer:

gravity

Explanation:

gravity pulls you down so for example you will weigh more on earth than on the moon because earths gravitational pull is greater.

Answer:

free-fall acceleration = 12.25 m/s²

Explanation:

Formula for free fall acceleration is given by the gravity equation;

g = Gm/r²

Where;

M is mass of the Earth

r is radius of the Earth

G is the gravitational constant

Now, that equation applies to the earth.

For this new planet, we are told that the mass = 5 × mass of earth

And radius = 2 × radius of earth.

Thus, free fall acceleration for this planet is;

g_p = G(5m)/(2r)²

g_p = (5/4)(Gm/r²)

Gravitational constant has a value of 6.674 × 10^(−11) N.m²/kg²

Mass of the earth = 5.972 × 10^(24) kg

Radius of the earth = 6378 km = 6378000

Thus;

g_p = (5/4)(6.674 × 10^(−11) × 5.972 × 10^(24))/(6378000²) = 12.25 m/s²

Answer:

The power will increase

Explanation:

Power is the rate in which work is done or the rate of doing work

The formula for power is given as follows;

[tex]Power = \dfrac{Work \ done}{Time \ taken \ to \ do \ the \ work}[/tex]

Therefore, power is directly proportional to work, and when work is increased provided all other factors remain constant, the power will be increased proportionately.

As such, for example, when the work is doubled, and the time to do the work is the same, the power has also doubled.

Answer:

D

Explanation:

Answer

Its D

Explanation:

Answer:

4 times as far

Explanation:

It is kinda hard but this equation should explain x−x0=v0v0a0−a0v202a20=v202a0 so 4 times (and if you would have been going 3 times as fast it would be 9 times as far...)

Answer:

The car would have skidded 4 times as far if it had been traveling twice as fast.

Answer:

4 m/s

Explanation:

Given:

Δx = 39 m

a = 6 m/s²

t = 3 s

Find: v₀

Δx = v₀ t + ½ at²

39 m = v₀ (3 s) + ½ (6 m/s²) (3 s)²

v₀ = 4 m/s

Answer:

-36 m

Explanation:

In the diagram, the front of the black car is used as reference point which is point 0. The distance from the black car to the front of the red car is 15 m while the distance from the black car to the white van is - 21 m. The negative sign means the white van is behind the black car.

If the red car is used as the reference (point 0), the distance from the black car to the red car would be -15 m and the distance from the black car to the white van would be -21 m. Hence:

Distance from red car to white van = distance from the black car to the red car  + distance from the black car to the white van = -15 + (-21)

Distance from red car to white van = -15 - 21 = -36 m

Answer:

The answer is -36

Explanation:

Explanation:

They should make sure the area is dry

Answer:

The number of protons in an atom of an element is unique to each element. A proton in an atom of one element is identical to a proton in an atom of another element. The number of protons in an atom of an element is the same for all elements.

Answer: 1,898 • 10^27 kg

Explanation:

A pex

The mass of Jupiter can be expressed in scientific notation as 1.898 ×10²⁷ Kg. Therefore, option (A) is correct.

Scientific notation can be described as a form of representing very large numbers in a simpler form. As we know, whole numbers can be extended to infinity, but we cannot write such numbers on a piece of paper.

Scientific notation helps us to represent the numbers that are very huge in a form of multiplication of single-figure numbers and 10 raised to the power of the respective exponent.

To determine the exponent of 10, we should follow the rule such as the base must be always 10. The exponent should be a non-zero integer, which means it can be either positive or negative.

The absolute value of the coefficient should be greater than or equal to 1 but it must be less than 10.

Given the number is 1,898,000,000,000,000,000,000,000,000 Kg can be written as 1.898 ×10²⁷ Kg in scientific notation.

Learn more about scientific notation, here:

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Answer:9

Explanation:

we are adding the numbers given to find the total.

Answer:

La frecuencia será la misma en los dos medios, y en el vacio, no varia.

b) Vacío : n = 3,684 10 m 1,33 = 4 900 Å ,3161 10 m 55,1 n

,6 105 10 Hz

3,161 10 m

v 1,93 10 m/s 193548,38 km/s =

1,55

10 3 m/s

n

c

Vidrio v: =

,6 107 10 Hz

3,684 10 m

v 2,25 10 m/s 225 000km/s =

33,1

10 3 m/s

n

c

a

Explanation:

The force between two bodies is given by :

[tex]F=G\dfrac{m_1m_2}{r^2}[/tex]

And this force is called the gravitational force

r is the distance between bodies

G is universal gravitational constant

[tex]G=\dfrac{Fr^2}{m_1m_2}[/tex]

SI unit of force is Newton or N

SI unit of r is meter or m

The SI unit of m₁ and m₂ is kg

[tex]G=\dfrac{\text{Nm}^2}{\text{kg}^2}\\\\G=Nm^2kg^{-2}[/tex]

Newton = kg m/s²

So,

[tex]G=\dfrac{kgm^3}{s^2kg^2}\\\\G=kg^{-1} m^3s^{-2}[/tex]

Hence, this is the required solution.

Answer: Work can transfer energy between objects and cause a change in the amount of total energy. Work can transfer energy between objects and cause a change in the form of energy. ... When a spring is compressed, the energy changes from kinetic to potential.

Answer:

work can transfer energy

Explanation:

sense there is a ton of effort in work it can accumulate energy. physical and thermal energy. :)

Answer:

To use them in future projects and saving the community.

Explanation:

An explanation about using them in future projects is that you can, for example, use plastic for a biology project. It's also a proven fact that recycling can help the environment so there will be less pollution due to having certain recyclables in the wrong places such as the ocean.

Answer:

Potential energy = 3635.8 Joules

Explanation:

Given that,

Weight lifted by a weight lifter is 12 kg

It lifts to a height of 1.75 m

We need to find the potential energy to the wights now have. The energy possessed by an object due to its position or height above ground is called potential energy. Its formula is given by :

P = mgh

g is the acceleration due to gravity

[tex]P=212\ kg\times 9.8\ m/s^2\times 1.75\ m\\\\P=3635.8\ J[/tex]

So, the potential energy is 3635.8 joules.

Explanation:

a. Net force is mass times acceleration (Newton's second law).

∑F = ma

∑F = (5.0 kg) (2.0 m/s²)

∑F = 10 N

b. The net force is the sum of the individual forces.

10 N = F − 5 N

F = 15 N

c. Friction force here is mgμ.

mgμ = 5 N

(5.0 kg) (10 m/s) μ = 5 N

μ = 0.1

Answer:

A hypothesis is an idea or explanation that you then test through study and experimentation.

Answer:an educated guess

Explanation:

the rock will go in constant slow speed

Answer:

 a = 1.66 m /s²

Explanation:

This is a kinematics exercise

       v = v₀ + a t

        x = v₀ t + ½ a t²

we solve for the initial velocity in the first equation and substitute in the second

       v₀ = v - at

        x = (v- at) t + ½ a t²

        x = vt - a t² + ½ a t²

        x = v t - ½ a t²

we seek acceleration

       a = (v t -x) 2 / t²

let's calculate

        a = (15 6 - 60) 2/6²

        a = 1.66 m /s²

Answer:

Aim at the base of the fire and use short bursts until the fire is out.

Explanation:

Fire extinguishers use CO2 (Carbondioxide) as the extinguishing agent. This is because CO2 is denser than air, and does not support combustion.

Aiming at the base of the fire causes the CO2 to fall on the base of the fire, where the source of the fire is, trapping it, and preventing it from further reacting with air in a combustion reaction. Also, the short burst creates a strong wind that forces the flame to blow out.

Answer:

Phones as sunglasses with a mic. I put on my glasses and I say what's the weather today, The sunglasses will tell me the weather and can be charged just like phones

Explanation:

Answer:

The time taken is missing in the question. The time is 18 minutes.

The answer is 34.3 km/hr

Explanation:

Average velocity is the speed or the velocity which is required to cover a distance in a time interval.

The time taken is = 18 min

                            = 18/60 hours

The distance from the university to her home is = 10.3 km

Therefore, the average velocity is = displacement/time taken

                                                         = 10.3 / (18/60) km/hr

                                                         = 34.3 km/hr

Hence, the average velocity is 34.3 km/hr

Answer:

2.5N

Explanation:

since force is inversely proportional to square of the distance apart. that means the ratio of distance apart. so u have 12800×12800÷(6400××6400)=4/1

so the weight will be reduced to 1/4 of 10N

Explanation:

A carpet absorbs sound making the room quieter. A wooden floor reflects sound making it louder. ... The carpet surface absorbs some of the sound, making the room less “live.”

Answer:

[tex] \boxed{\sf Magnification \ (m) = 2} [/tex]

Given:

Object distance (u) = 25.0 cm

Image distance (v) = -50.0 cm

To Find:

Magnification (m)

Explanation:

[tex]\boxed{\bold{\sf Magnification \: (m) = - \frac{Image \: distance \: (v)}{Object \: distance \: (u)}}}[/tex]

Substituting values of Image distance(v) & Object distance (u) in the equation:

[tex] \sf \implies m = - \frac{( - 50)}{25} [/tex]

-(-50) = 50:

[tex]\sf \implies m = \frac{50}{25} [/tex]

[tex]\sf \implies m = \frac{2 \times \cancel{25}}{ \cancel{25}} [/tex]

[tex]\sf \implies m = 2[/tex]

Answer:

+2

Explanation:

m = -di/do

m = -(-50)/25 = 2

Answer:

The answer is "folding".

Explanation:

It is a physical reconfiguring of the process, which gives a fabric a softer, lightweight shape. It is achieved in a far less simple space to carry or store products.