plz help me with this brain teaser

TRAVEL
_________
cccccccccc

Answer:

An acid is defined as a substance whose water solution tastes sour, turns blue litmus red and neutralizes bases. A substance is called base if its aqueous solution tastes bitter, turns red litmus blue or neutralizes acids. Salt is a neutral substance whose aqueous solution does not affect litmus

Answer:

A lightbulb

Explanation:

Answer:

Lightbulb

Explanation: got it right

Given :

Pilot sits 2.19 m from the center of rotation.

Horizontal centripetal acceleration is 65.8 m/s².

To Find :

The angular velocity of the pilot .

Solution :

We know, centripetal acceleration is given by :

[tex]a = \omega^2 r\\\\\omega = \sqrt{\dfrac{a }{r}}\\\\\omega = \sqrt{\dfrac{65.8 }{2.19}}\\\\\omega = 5.48\ s^{-1}[/tex]

Hence, this is the required solution.

Explanation:

F=MA

F=1500 * 2

F=3000N

Answer:

Is Mercury an answer on your thing?

Explanation:

Mercury has the least amount of gravity, so therefore you can jump the highest on Mercury.

Answer:

Jupiter

Explanation:

Jupiter has more than 300 time the mass as earth. so, it's gravitational pull is stronger.

Hopefully this helps

Answer:

make sound bounce off walls

Answer:

Explanation:

Walls that absorb the sound and dont just bounce or reflect the sound straight back. Like how video makers have foam walls with ridges on their walls.

The action and reaction law allows us to find that the reaction force, the weight of the cylinder, is:

Newton's third law or action and reaction law, establishes that if two bodies interact with each other the force that one applies to the other, is equal in magnitude to the force of the second on the first but in the opposite direction, that is, all forces act in pairs one in each body that interact.

Forces with these characteristics are called action and reaction.

In this case we have a hanging cylinder, with the cylinder it has mass so the weight is 12 N it acts on the table in a downward direction, let's say this is the action force.

In response to this force, the table exerts a force on the cylinder of equal magnitude but in the opposite direction, which is why it is directed upwards.

let's analyze the force diagram

In conclusion using theaction and reaction law we find that the answer for reaction force is:

Learn more about the action and reaction law here:

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Two processes, the magnetic field production by electric current and electric current production by moving magnets are part of Electromagnetism.

Electromagnetism:

It is a branch of physics in which scientists study the electromagnetic force. Or in simple words studies the interaction of electric and magnetic field.

This includes the production of magnetic field from the electric current and electric current from moving magnet.

The study of magnetic field of a permanent magnet is part of magnetism while the attraction of electric charges by each other is studied under electrostatics.

Therefore, two processes, the magnetic field production by electric current and electric current production by moving magnets are part of Electromagnetism.

To know more about Electromagnetism:

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Answer:

D

Explanation:

The decrease in potential energy is equal to the increase in kinetic energy.

mgh

250 x 9.8 x 30

=73, 500

Answer:

73,500 J

Explanation:

100% Correct

Answer:

μ = 0.125

Explanation:

To solve this problem, which is generally asked for the coefficient of friction, we will use the conservation of energy.

Let's start working on the ramp

starting point. Highest point of the ramp

         Em₀ = U = m h y

final point. Lower part of the ramp, before entering the rough surface

        [tex]Em_{f}[/tex] = K = ½ m v²

as they indicate that there is no friction on the ramp

          Em₀ = Em_{f}

          m g y = ½ m v²

          v = [tex]\sqrt{2gy}[/tex]

we calculate

          v = √(2 9.8 0.25)

           v = 2.21 m / s

in the rough part we use the relationship between work and kinetic energy

          W = ΔK = K_{f} -K₀

as it stops the final kinetic energy is zero

          W = -K₀

The work is done by the friction force, which opposes the movement

          W = - fr x

friction force has the expression

          fr = μ N

let's write Newton's second law for the vertical axis

         N-W = 0

         N = W = m g

we substitute

            -μ m g x = - ½ m v²

           μ = [tex]\frac{v^{2} }{2 g x}[/tex]

Let's calculate

           μ = [tex]\frac{2.21^{2}}{2\ 9.8\ 2.0}[/tex]

           μ = 0.125

A 8.0 kg box is released from rest at a height y0 = 0.25 m on a frictionless ramp. The box slides from the ramp onto a rough horizontal surface. The box slides 2.0 m horizontally until it stops.

What is the friction coefficient of the horizontal surface?

Answer: 0.125

Answer:

The Coriolis Effect makes things appear to move in a curve around our planet, like, for example, a plane. This is also due to the fact that our Earth is round, so nothing really moves in a straight line. It is "an effect whereby a mass moving in a rotating system experiences a force (the Coriolis force ) acting perpendicular to the direction of motion and to the axis of rotation."

Explanation:

Answer:

Technically, no the work of building machines is hard but in the long run, Yes they are easier after they're built.

Explanation:

Answer: 20

Explanation:

If Jake pushes with 20 N of force, the force that he would feel backwards away from Amir is 20N

Force simply means the strength or energy that can later the position of an object. Force can also be described as a push or pull.

It should be noted that since Jake pushes with 20 N of force, the force that he would feel backwards away from Amir will be the exact force that was used in pushing.

This will therefore be 20 Newton as well.

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Answer:

I do drink bottled water but not to often, I live about 2.8 miles away from its water source and if i did'nt drink bottled water and I had to found out how my drinking water is treated I would go ask the people that are taking care of the water.

Explanation:

hope this helps

Answer:A material that can dissolve in another material called Soluble

Explanation:

Answer:

Option 3.

Soluble is the correct/best answer choice.

Answer:

because we naturally use energy everyday in everyway , energy is also a bill for instance you electric bill used by energy

Explanation:

[tex]\huge\boxed{Option D}[/tex]

Radius of Mercury = [tex]R_m[/tex] = [tex]2.43x10^6m[/tex]

Mass of Mercury = [tex]M_m = 3.2x10^{23}m[/tex]

Distance Satellite above the surface of the Mercury = d = 265,000m

Gravitational Constant =  [tex]G = 6.67x10^{-11} \frac{N.m^2}{kg^2}[/tex]

Since the Satellite is orbiting around the Planet Mercury, due to the centripetal force, and Centripetal force is the force that acts towards the center of the circle, Whereas The gravitational force also acts towards the center of the circle thus we can say that Centripetal force is equal or same as centripetal force.  So,

                                             [tex]F_g =F_C[/tex]

Fg is Given by,

                                           [tex]F_g = \frac{GM_MM_S}{r^2}[/tex]

Fc is Given by,

                                           [tex]F_c=\frac{M_SV^2}{r}[/tex]

Where,

            G is Gravitational Constant

            [tex]M_e[/tex] is mass of Planet Mercury

            [tex]M_S[/tex] is Mass of Satellite

             r(small letter) is the distance between the center of the Planet Mercury and the satellite.

             V is velocity of satellite

Now,

                                 [tex]\frac{GM_MM_S}{r^2} =\frac{M_SV^2}{r}[/tex]

                                 [tex]V = \sqrt\frac{GM_M}{r}[/tex]

 r can also be written as,

                                  [tex]V = \sqrt\frac{GM_M}{R_M +d}[/tex]

Substitute the variables,

                                  [tex]V = \sqrt{\frac{(6.67x10^{-11})x(3.2x10^{23})}{2695000}[/tex]

Simplify the equation,

                                  V = 2814 [tex]\frac{m}{s}[/tex]

Approximately,

                                  V = 2800 [tex]\frac{m}{s}[/tex]

Answer: Physical fitness can be defined as the ability of a person to perform daily routine tasks without any ailment.

Explanation:

Dance workouts can help in improving the physical fitness of the person.

This may involve improvement of the cardiovascular strength.

This may also help in improving the strength and endurance of a person.

This improves the stamina, flexibility, and composition of the body.

The dance also helps in maintaining balance and attaining the correct posture.

Answer:

Is there a multiple choice or select all that apply? I would say Potassium (K) or Sodium (Na)

Explanation:

Answer:

[tex]a=32\ m/s^2[/tex]

Explanation:

Given that,

The velocity of an astronaut in a circular path, v = 16 m/s

The radius of the accelerator, r = 8 m

We need to find his centripetal acceleration. The formula that is used to find the centripetal acceleration is given by :

[tex]a=\dfrac{v^2}{r}\\\\a=\dfrac{(16)^2}{8}\\\\a=32\ m/s^2[/tex]

So, the required centripetal acceleration is [tex]32\ m/s^2[/tex].

Answer:

[tex]K_{i}+U_{g,i} = K_{f}+U_{g,f}[/tex]

Explanation:

A closed system is a system where exists energy interactions with surroundings, but not mass interactions. If we neglect any energy interactions from boundary work, heat, electricity, magnetism and nuclear phenomena and assume that process occurs at steady state and all effects from non-conservative forces can be neglected, then the equation of energy conservation is reduce to this form:

[tex]\Delta K +\Delta U_{g} = 0[/tex] (1)

Where:

[tex]\Delta K[/tex] - Change in kinetic energy of the system, measured in joules.

[tex]\Delta U_{g}[/tex] - Change in gravitational potential energy of the system, measured in joules.

If we know that [tex]\Delta K=K_{i}-K_{f}[/tex] and [tex]\Delta U_{g} = U_{g,i}-U_{g,f}[/tex], then we get the following equation:

[tex]K_{i}+U_{g,i} = K_{f}+U_{g,f}[/tex] (2)

Where [tex]i[/tex] and [tex]f[/tex] stands for initial and final states of each energy component.

Hence, the right answer is [tex]K_{i}+U_{g,i} = K_{f}+U_{g,f}[/tex]

Answer:

KEi + PEi = KEf + PEf

Explanation

right on edge 2020

Answer:

b

Explanation:

ibecause the wheels are sliding on the ground i think

Solution :

Speed of the air craft, [tex]$S_a$[/tex] = 262 m/s

Fuel burns at the rate of, [tex]$S_b$[/tex] = 3.92 kg/s

Rate at which the engine takes in air, [tex]$S_{air}$[/tex] = 85.9 kg/s

Speed of the exhaust gas that are ejected relative to the aircraft, [tex]$S_{exh}$[/tex] =921 m/s

Therefore, the upward thrust of the jet engine is given by

[tex]$F=S_{air}(S_{exh}-S_a)+(S_b \times S_{exh})$[/tex]

F = 85.9(921 - 262) + (3.92 x 921)

   = 4862635.79 + 3610.32

   = [tex]$4.8 \times 10^6 \ N$[/tex]

Therefore thrust of the jet engine is [tex]$4.8 \times 10^6 \ N$[/tex].

Answer:

Density of the ship :133.33 kg/m³

Mass of the ship :50,000,000 kg

Ships are able to float on water because they displace a volume that equals  their own weight

Explanation:

The formula for density is ;

Density = Mass/Volume

But the mass of  displaced fluid is give by the formula;

m=ρV where ρ is density of the fluid and V is volume of water displaced

Volume of liner= 375000 m³

Volume displaced = 50000 m³

The volume of the water displaced is equal to mass of the liner

I m³ = 1000 kg

50000 m³ = 50000*1000 =50,000,000 kg

50,000,000 kg ----------mass of the ship

So if ;

m= 50,000,000 kg

v= 375000 m³

ρ = m/V

ρ = 50,000,000/375000

ρ = 50,000,000/375000

ρ =133.33 kg/m³

Ships are able to float on water because they displace a volume that equals  their own weight. Additionally, the air contained in the spaces of the ship inside is much less dense than density of water aiding in the floating process.

Answer:

Doppler effect to analyze the motion and properties of the star and planet.

Explanation:

The radial velocity method invovles watching the spectral lines of a star as a planet orbits around the star. Because of the planets gravitational pull on the star, will wobble. This causes Doppler shifts in the spectral lines, allowing astronomers to infer the presence of the planets.

Answer:

A.) Most nonmetals are gaseous, but some are liquid or solid

Explanation:

Answer:

a

Explanation:

Answer:

The atomic number tells us the number of protons.

Explanation:

Hope this helps and I hope u have an Amazing day!!