What is the weight of an object a mass of 90.0kg?

Answer:

so the answer is number one which is A

Answer:

2 watts

Explanation:

disadvantages

Explanation:

releases heat when not required

opposes motion

Answer:

Your answer should be B. a parabola.

Explanation:

The path of the projectile in the absence of friction is a parabola. Therefore, option (b) is correct.

Projectile motion can be described as a form of motion experienced by a projectile that is projected near the surface of the earth and moves along a curved path under the action of gravity. This curved path is to be a parabola, but may also be a straight line in special cases when the projectile is thrown directly upwards.

The study of such motions is known as ballistics and the only force that is actively exerted is gravity, which acts downward, thus giving the object a downward acceleration toward the Earth’s center of mass.

No external force is required to maintain the horizontal velocity component of the object's motion because of the object's inertia. Other forces, such as aerodynamic drag or internal propulsion need additional analysis.

Therefore, the path of an object or projectile is generally parabola in the absence of friction.

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Answer:

660

Explanation:

0.011kW = 11W

energy = 11 x 60

            = 660J

Answer:

Explanation:

Answer:

I don't know what do u. mean

We are given:

Mass of Neptune = 1.03 * 10²⁶ kg

Distance from the center of Neptune (r) = 2.27 * 10⁷

now, computing the value of the acceleration due to gravity (g)

Finding g:

We know the formula:

g = G(mass of planet) / (r)²

g = [6.67 * 10⁻¹¹ * 1.03*10²⁶] / (2.27*10⁷)                      [since G is 6.67*10⁻¹¹]

g = (6.87 * 10¹⁵) / (5.15 * 10¹⁴)

which can be rewritten as:

g = (6.87 * 10¹⁵ * 10⁻¹⁴) / 5.15

g = (6.87 * 10¹⁵⁻¹⁴) / 5.15

g = (6.87/5.15) * 10

g = 1.34 * 10

g = 13.4 m/s² (approx)

Answer:

Earth’s gravitational force is stronger

Explanation:

Earth’s gravitational force is stronger than the moon because of the presence of more massive objects in earth; on the flip side, the moon’s gravity is weaker than the earth due to smaller in size as compared to the earth. Earth gravity is denoted by g; conversely, moon gravity is denoted by gm

Answer: The greater an object's mass, the more gravitational force it exerts. So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive. That's why the moon isn't pulled out of Earth's orbit by the gravity of larger planets or by the sun.

Explanation:

Answer:

[tex]u = 4.56m/s[/tex]

[tex]T = 0.94s[/tex]

Explanation:

See comment for complete question

Given

[tex]h = 106cm[/tex] --- Height

Solving (a): The initial speed

To do this, we make use of the third equation of motion

[tex]v^2=u^2+2ah[/tex]

In this case:

[tex]v = 0m/s[/tex] --- final velocity at the maximum height

[tex]a = -g = -9.8m/s^2[/tex]

[tex]h = 106cm[/tex]

Convert height to metres

[tex]h = 1.06m[/tex]

Substitute these values in [tex]v^2=u^2+2ah[/tex]

[tex]0^2 = u^2 +2 *(-9.8) * 1.06[/tex]

[tex]0^2 = u^2 -20.776[/tex]

Collect Like Terms

[tex]u^2 =20.776[/tex]

Take the positive square root of both sides

[tex]u =\sqrt{20.776[/tex]

[tex]u = 4.55806976691[/tex]

[tex]u = 4.56m/s[/tex] --- approximated

Hence, the initial velocity is 4.56m/s

Solving (b): Time spent in the air.

This will be solved using the first equation of motion.

[tex]v = u + at[/tex]

Where:

[tex]v = 0m/s[/tex] --- final velocity at the maximum height

[tex]a = -g = -9.8m/s^2[/tex]

[tex]u = 4.56m/s[/tex]

So, we have:

[tex]0 = 4.56 - 9.8t[/tex]

Collect Like Terms

[tex]9.8t = 4.56[/tex]

Make t the subject

[tex]t = \frac{4.56}{9.8}[/tex]

[tex]t = 0.46530612244[/tex]

[tex]t = 0.47s[/tex] --- approximated

The above is the time it reaches the maximum height.

The time it stays in the air is:

[tex]T = 2t[/tex]

This gives:

[tex]T = 2*0.47s[/tex]

[tex]T = 0.94s[/tex]

Answer:

When a magnet is moving relative to a conductor in close proximity, a current is induced within the conductor. This induced current will cause an opposing magnetic field. This opposing magnetic field can be used to levitate a magnet.

Explanation:

Answer:

Pensamiento crítico.

Explicación:

El pensamiento crítico es ese tipo de pensamiento que surge en un individuo o en un proceso, fomentado por la indagación y el cuestionamiento. Desde el punto de vista de un estudiante, el aprendizaje basado en la indagación se centra en investigar un problema utilizando un método científico. En este tipo de aprendizaje, el razonamiento se realiza a la luz de la evidencia y se resuelve el problema para extraer una conclusión, la cual debe ser defendida mediante un razonamiento fuerte. Este tipo de indagación ayuda al individuo a aprender cosas nuevas.

Answer:

The correct answer is -

A (the entire green box): Chemical Equation

B (the blue box): Reactants

C (the arrow): Reacts to Form

D (the number): Coefficient

E (the purple box): Products

Explanation:

The chemical reaction of burning methane and oxygen is as follows;

Here, the green part A is the chemical equation that includes various parts that are reactants B, methane, and oxygen, C is an arrow that indicates the formation of products.

2 is here coefficient that indicates the moles of the oxygen which forms carbon dioxide and water in box E is products

Answers:

A (the entire green box):  chemical equation

B (the blue box): reactants  

C (the arrow):  reacts to form

D (the number):  coefficient

E (the purple box):  products

Explanation:

As seen in the picture below,

Answer:

floating had to do with the pressure rather than the weight

Explanation:

the water pressure on the bottom of the boat is so hard and pushing that it causes it to float.. And the steel ball has alot of density. which is causing it to sink

Answer:

because of its displacement, a ship displaces water. when a steel ball does not.

Answer:

Speed is solved with time and distance but has no direction

Average velocity is solved with Δx/Δt and has a direction

Answer:

Explanation:

The current produced by a 9-volt battery flowing through a resistance of 0.2 ohms would be  45 Ampere.

Resistance is the obstruction of electrons in an electrically conducting material.

The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.

V=IR

As given in the problem we have to find the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms.

current produced by a 9-volt battery  = voltage /resistance

                                                              = 9 volt /0.2 ohms

                                                              = 45 Ampere

Thus, the current produced would be 45 Ampere.

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Answer: How it was created, The frequency of the waves, and is the water salty enough to kill someone.

Explanation:

Just from my brain.

Answer: the ecosystem , differnt species of fish, and ship wrecks

Explanation:

:)

Fluorine is the sample which is shiny but does not conduct heat and electricity through it. The flow of electricity requires the flow of electrons or charged particles. Thus, the correct option is A.

A conductor is a substance, chemical element, or a material which allows electricity and heat to flow through it. In a conductor, the electrical charge carriers which are usually electrons or positive and negative ions, move easily from one atom to another atom when a particular amount of voltage is applied.

Fluorine is a shiny element however it does not conduct heat and electricity through it. It is the most electronegative atom and is very reactive in nature. It only gains electrons and does not lose them. And because of this property of fluorine, it restricts the movement of electrons through it and fails to conduct electricity.

Therefore, the correct option is A.

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Answer:

Gravity,

I hope this correct

Answer:

there is no image to go off of. If you could share that I would be happy to help.

Explanation:

Please share the image!

Answer:

The focal length of the given spherical mirror is 20cm.

Explanation:

plz follow me

Answer:Cs

Explanation: for this one 92-37 is 55

Explanation:

lanthanide is another name for the rare earth

elements.

Answer:

use common sense

Explanation:

Answer:

true

Explanatiohope this helps

Answer: i think they control the eyes to move them.

Explanation:

Answer:

I believe it is the same as before-Electrical energy is transformed into heat and light energy.

Explanation:

Hope this helps'-'

Chemical energy (in his muscles) ===> kinetic energy ===> electrical energy ===> light energy and a little bit of heat energy

Answer:

a)  [tex]v_{oy}[/tex] = 0,  b)  t = 9.035 s, c) x = 587.275 m, d)  v_y = -88.54 m / s,

e) v = 109.84 m / s,  f)  θ = -53.7º

Explanation:

This exercise is a projectile launch

a) as the projectile is launched horizontally, its initial vertical velocity is zero

          [tex]v_{oy}[/tex] = 0

b) let's use the relation

          y = y₀ + v_{oy} t - ½ g t²

when reaching the ground y = 0 and the initial vertical velocity is v_{oy}=0

         0 = y₀ + 0 - ½ g t²

         t = [tex]\sqrt{ \frac{2 v_o}{g} }[/tex]

         t = [tex]\sqrt{ \frac{ 2 \ 400 }{ 9.8} }[/tex]

         t = 9.035 s

c) the horizontal distance is

         x = v₀ₓ t

         x = 65  9.035

         x = 587.275 m

d) the vertical speed when touching the ground

         v_y = [tex]v_{oy}[/tex] -gt

         v_y = 0 - 9.8 9.035

          v_y = -88.54 m / s

the negative sign indicates that the velocity is directed downwards

e) the velocity at this point

          v = [tex]\sqrt{ v_x^2 + v_y^2}[/tex]

          v = [tex]\sqrt{65^2 + 88.54^2}[/tex]

          v = 109.84 m / s

f) the direction of the velocity

let's use trigonometry

          tan θ = v_y / vₓ

          θ = tan⁻¹1 v_y / vₓ

          θ = tan⁻¹ (-88.54 / 65)

          θ = -53.7º

this angle is measured clockwise

Answer:

Answer: Elementary Entities are any of several entities, such as electrons, neutrons, or protons, that are less complex than atoms and are regarded as the constituents of all matter.