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Answer:

[tex]300[/tex] cm are equivalent to [tex]3[/tex] m.

Explanation:

[tex]100[/tex] cm are equivalent to [tex]1[/tex] m.

[tex]100 \mathrm{~cm}$=1{~m}$[/tex]

[tex]3 \mathrm{~m}$=3\times100[/tex]

[tex]=$300{~cm}$[/tex]

To convert meters ([tex]\mathrm{~m}$[/tex]) into number of centimeters ([tex]\mathrm{~cm}$[/tex]), multiply that number by [tex]100[/tex].

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Answer:

here

Explanation:

Answer:

493,420 Joules

Explanation:

Potential energy of the roller coaster

PE = mgh

Where

m = mass (kg)

g = gravitation (9.8 m/s²)

h = height

PE = 72 x 700 x 9.8 (in some cases 10)

PE = 493,420 J

If g = 10

PE = 504,000 J

Answer:

No C. process of investigation that does not resemble science, but follows scientific methods.

Answer: i would do something that is really easy and i will do test 2 where there aint a word problems and i am going 2 put the work 2 where it is 2 there standard i aint going 2 do sum over there standards of science.

Explanation:

Answer:

In my opinion make it fun or take time to think or  make it something that kids wanna do but they are still learning from it.

The minimum speed with which a projectile will travel a range is given by the speed when the given range is taken as the maximum range for the given speed

The minimum takeoff speed for such a leap is approximately 9.9 m/s

The known parameter is the distance a grey kangaroo can leap = 10 meters

The required information is the minimum takeoff speed for the leap

Solution:

The path of motion of the kangaroo as they leap is the path of a projectile

The distance of the leap is the range of the projectile

The formula for the maximum range is presented as follows;

[tex]Maximum \ range, R = \mathbf{ \dfrac{v_0^2 }{g}}[/tex]

v₀ = The initial speed of the kangaroo

g = The acceleration due to gravity ≈ 9.81 m/s²

The minimum speed to reach a maximum range of, R = 10 meters is found as follows;

[tex]\mathbf{ Maximum \ range, R} = 10 \, m = \dfrac{v_0^2 }{9.81 \ m/s^2}[/tex]

Therefore;

v₀² = 10 m × 9.81 m/s² = 98.1 m²/s²

v₀ = √(98.1 m²/s²) ≈ 9.9 m/s

The minimum takeoff speed for the kangaroo to leap 10 meters on horizontal ground, v₀ ≈ 9.9 m/s

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Answer:

A

Explanation:

Answer:

a

Explanation:

i remeber learing this

hope this helps

branliest plzz

Answer:

5 m/s² & 20 m

Explanation:

#1

Acceleration = Final velocity - Initial velocity/Time

Acceleration = 15 - 5/2

Acceleration = 10/2

Acceleration = 5 m/s²

#2

v² - u² = 2as

(15)² - (5)² = 2(5)(s)

225 - 25 = 10s

200 = 10s

200/10 = s

20 = s

Please find the attached photograph for your answer. Hope it helps! Please do comment

The car’s average velocity is mathematically given as

V=4m/s

Average velocity is simply the mean rate of change of position of a car over a period of different times and this can be used to attain velocity of a car that has been in different velocity states

Generally, the equation for the Velocity   is mathematically given as

V=(AI/OI)

Therefore

V=24/1

V=4m/s

In conclusion, the car’s average velocity

V=4m/s

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Answer:

Option A - Sound waves must move through a substance

Explanation:

Unlike light waves, sound waves must travel through a medium/substance for such a medium to vibrate and then produce sound.

As a matter of fact sound can't travel through empty space.

Thus, looking at the options given, the correct one is:

Sound waves must move through a substance which is Option A

Answer:

Length

Explanation:

Answer:

length

hope it helps you

Answer:

5.25m to 52.5 Decimeters (10x)

5.25m to 5250 Millimeters (1000x)

Answer:

two protons and two neutrons

it's the answer. hope it helps

Alpha particles have two protons and two neutrons. Therefore, option (D) is correct.

Alpha particles can be defined as positively charged particles released from the decay of several radioactive materials. The mass of the Alpha particle is because of the presence of two protons and two neutrons. Therefore, the Alpha particles nucleus is very similar to the nucleus of the Helium atom and are denoted by the Greek alphabet α.

An alpha particle or ray is also known as doubly ionized helium nuclei (He²⁺). The alpha particle's mass is equal to 6.64 × 10⁻²⁷ Kg. Alpha particles are generally generated during the standard radioactive decay of atomic nuclei.

Alpha particles contains the kinetic energy of 5MeV and a speed of 5 % of that of the speed of light. They are also formed in high-energy particle accelerators and are highly ionized particles with low penetration depth compared to other particles.

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Answer:

D. rusting is answer....

Answer:

Formula : P = hdg

SI unit = N/m^2

Answer:

a joule is the unit of work

Explanation:

[tex] \large \mathfrak{Answer : }[/tex]

The S.I unit of velocity is m/s and since it's velocity it needs to be in a particular direction, therefore most appropriate answer is :

B. She is running west at 2.4 m/s

By mass - Vegetables,wheat, rice.

By volume - carocin,water,oil.

By length- Rod,thread,cloths.

Answer:

Physical activity or exercise can improve your health and reduce the risk of developing several diseases like type 2 diabetes, cancer and cardiovascular disease. Physical activity and exercise can have immediate and long-term health benefits. Most importantly, regular activity can improve your quality of life.

Explanation:

With Newton's second law and kinematics we find the deflection of the electron beam is y = 1.44 cm

given parameters

to find

the  electric field and the electric potential are related

         V = -E d

         E = - V / d

where E is the electric field, V the electric potential and d the separation between the plates

         E = - 300 / 0.03

         E = -1 10⁴ N / C

Let's solve this exercise in parts

1st part. Let's set a reference system with the horizontal axis in direction to the length of the plates and the y axis in the vertical direction, the zero is located at the initial point of the plate and half of its separation.

Let's use Newton's second law to find the acceleration in the y-axis of the electrons

           F = m a

electric force is

           F = q E

           q E = m a

           a = q / m E

the face of electrons is negative q = -e

            a = - e / m E

            a = - 1.8 10¹¹ (- 1 10⁴)

            a = 1.8 10¹⁵ m /s²

this acceleration is directed upwards, that is, the electrons approach the positive plate.

2nd part. We use kinematics to find the time it takes for electrons to pass the plates; on the x-axis there is no acceleration, so we use the uniform motion relationships

             v = x / t

             t = x / v

             t = 0.04 / 1 10⁷

             t = 4 10⁻⁹ s

For the y-axis, let it be known that the electrons are initially in the middle between the plates, so y₀ = 0 and the velocity eg this axis is zero, we look for the deflection at the end of the plate

          y = y₀ + v_{oy) t + ½ a t²

           y = 0 + 0 + ½ a t²

           y = ½ (1.8 10¹⁵)  ( 4 10⁻⁸ )²

           y = 14.4 10⁻³ m = 1.44 10⁻² m

          y = 1.44 cm

We can use Newton's second law and kinematics to find the distance that the electron beam deviates from the middle of the plate is y = 1.44 cm, therefore the beam of electrons leaving the plates

learn more about Newton's second law and kinematics here: brainly.com/question/13016721

Answer:

The vertical deflection of the beam of an electron beam is 1.44×〖10〗^(-2)  m.

Explanation:

Velocity (v) = 〖10〗^7  m/s

p.d. (V) = 300 V

Length of metal plates (x) = 4cm = 0.04 m

Separation (d) = 3 cm = 0.03 m

Specific charge of an electron (e/m) = 1.8×〖10〗^11  C/kg

Vertical deflection (y) = ?

The vertical deflection of electron inside the electric field is

y=1/2  at^2

=1/2  eE/m  (x/v)^2

=1/2 (e/m)  V/d  (x/v)^2

=1/2×1.8×〖10〗^11×300/0.03×(0.04/〖10〗^7 )^2

⸫ y=1.44×〖10〗^(-2)  m

Hence, the vertical deflection of the beam of an electron beam is 1.44×〖10〗^(-2)  m.

Explanation:

Camels have wider hoofs, the reduced pressure of their feet makes the camel run faster in the desert. Their eyes are used to blowing sand so it does not affect their speed.

As they have a wider hoofs their foot dont sink in sand so they can easily run or walk.

Answer:

because camels have wider hoofs and reduced pressure of their feets

We have to find acceleration first.

[tex]\boxed{\sf Acceleration=\dfrac{v-u}{t}}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{22-44}{11}[/tex]

[tex]\\ \sf\longmapsto Acceleration=\dfrac{-22}{11}[/tex]

[tex]\\ \sf\longmapsto Acceleration=-2m/s^2[/tex]

Using second equation of kinematics

[tex]\boxed{\sf s=ut+\dfrac{1}{2}at^2}[/tex]

[tex]\\ \sf\longmapsto s=44(11)+\dfrac{1}{2}(-2)(11)^2[/tex]

[tex]\\ \sf\longmapsto s=484+(-1)(121)[/tex]

[tex]\\ \sf\longmapsto s=484-(121)[/tex]

[tex]\\ \sf\longmapsto s=363m[/tex]

Explanation:

[tex]we \: want \: to \: find \: displacement \\ we \: can \: use \: newtons \: laws \: of \: motion \\ s = ut + \frac{1}{2} a {t}^{2}....(1) \\here \: 44 = u \: (initial) \\ v = 22(final) \\ t = 11 \\ then \: \\ s = 44 \times 11 + \frac{1}{2} (\frac{22 - 44}{11} ) {11}^{2} \\ s = 484 + \frac{1}{2} \times \frac{ - 22}{11} \times 11 \times 11 \\ s = 484 - 121 \\ s = 363m \\ thank \: you[/tex]

Answer:

Galaxies move in a random pattern.

Answer:

a

Explanation:

the universe is expanding

i remember learing this

hope this helps

brailest plzz

Answer:

solar wind

Explanation:

the sun's atmosphere is made of hydrogen which itself made subatomic particle. These particle are constantly boiling off the sun and streaming outward at very speed. So, the sun's magnetic field and particles are called solar wind.

Answer:

c

Explanation:

Solar wind

Answer: I would say a mountain because it is a area of land risen high above the other land around it.

Explanation:

Answer:

a. applied science

Explanation:

[tex].[/tex]

Answer: One example of an experiment you can do is find out the heat difference between a white car and a black car using the sun in a hot day.

Explanation: The black car would absorb more heat from the sun and would make the inside of the black car hotter than the white car.