I need help asap!!!!


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Answer:

dmakqkwnwj fddfgdddwsf

Explanation:

steam shooting out through 2 l shaped Falls creators and action force that is accompanied by backward reaction in force in opposite direction

I think the answer is true

Two neutral objects will not have any electric force of attraction or repulsion between them.

As we know from the electrostatics that whenever there are two charges having a positive charge on one and a negative on the other will attract each other

similarly, if they are having like charges which are both of them having positive or both of them having a negative charge then there will be a force of repulsion between them.

But if both of them or even one of them is neutral then there will not be any electric force between them.

Thus neutral objects will not have any electric force of attraction or repulsion between them.

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Given parameters:

Height of Everest  = 8848m

Acceleration due to gravity on earth  = 9.8m/s²

Radius of the earth = 6400km = 6400000m

Unknown:

Acceleration due to gravity at the peak of Everest  =?

Solution:

According to Newton's law of universal gravitation, we have that acceleration due to gravity is proportional to the altitude.

 To solve this problem, use the mathematical expression below;

        g[tex]_{e}[/tex]   = g(1 - [tex]\frac{2h}{R}[/tex])

where g[tex]_{e}[/tex]  is gravity on top of Everest

            g is the gravity on the earth surface

            h is the height of the mountain

            R is the radius of the earth

      g[tex]_{e}[/tex]   = 9.8 (1 -[tex]\frac{2 x 8848}{6400000}[/tex] )

      g[tex]_{e}[/tex]  = 9.8 (1-0.002765)   = 9.77m/s²

The acceleration due to on top of Everest is  9.77m/s²

The solutions that have their mass greater than their volumes are:

The ratio of the mass of a substance to its volume is known as the density of the substance. Mathematically;

Density = Mass/Volume

For any solution to have a density greater than 1, the mass of the substance must be greater than its volume.

For the given option, the solutions that have their mass greater than their volumes are:

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Answer:

d = 3.6 m

Explanation:

The formula for Work: W = F * d

Where F is force in Newtons (N) and d is the distance travelled in meters (m). In order to do work, you need to force an object throughout a distance.

That's why pushing a wall (that doesn't move) is not considered work, because you can't move the wall to a distance.

So what we know:

F = 5,000 N

W = 18,000 J

d = W / F (according to the formula, right?)

d = 18,000 / 5,000 = 3.6 m

Answer:

Yes, the value of g affected by the radius.

Explanation:

The formula for the force of gravity of 2 objects is

[tex]F_{gravity} = G\frac{m_{1}m_{2}}{r^2}[/tex], where m1 and m2 are the masses of the 2 objects, r is the radius, and G is the gravitational constant, which is approximately [tex]6.67 \cdot 10^{-11}[/tex].

Therefore, as the radius if bigger, the force of gravity is going to be smaller exponentially.  

Kepler's Law (3)

T² ≈ r³

The square of the orbital period ≈ the cube the distance to the sun

The farther away the planet is, the bigger the radius, the bigger the period

Answer:

Approximately [tex]11121\; {\rm kg}[/tex] (rounded to the nearest whole number as required, assuming that planet Earth is a uniform sphere.)

Explanation:

Let [tex]G[/tex] denote the gravitational constant. [tex]G \approx 6.6743 \times 10^{-11}\; {\rm N \cdot m^{2} \cdot kg^{-2}}[/tex].

Let [tex]M[/tex] denote the mass of planet Earth. Let [tex]m[/tex] denote the mass of the telescope. Let [tex]r[/tex] denote the distance between the telescope and the center of planet Earth.

Note the unit conversion for the distance [tex]r[/tex]:

[tex]\begin{aligned}r &= 6940 \; {\rm km} \times \frac{10^{3}\; {\rm m}}{1\; {\rm km}} \\ &= 6.940 \times 10^{6}\; {\rm m}\end{aligned}[/tex].

By Newton's Law of Universal Gravitation, the magnitude of the gravitational force between planet Earth and this telescope would be:

[tex]\begin{aligned}W &= \frac{G\, M\, m}{r^{2}}\end{aligned}[/tex].

Rearrange this equation to find the mass [tex]m[/tex] telescope in terms of [tex]G[/tex], [tex]M[/tex], and [tex]r[/tex]:

[tex]\begin{aligned}G\, M\, m &= W\, r^{2}\end{aligned}[/tex].

[tex]\begin{aligned}m &= \frac{W\, r^{2}}{G\, M}\end{aligned}[/tex].

Substitute in the value of [tex]G[/tex], [tex]M[/tex], and [tex]r[/tex]:

[tex]\begin{aligned}m &= \frac{W\, r^{2}}{G\, M} \\ &\approx \frac{9.21 \times 10^{4}\; {\rm N} \times (6.940 \times 10^{6}\; {\rm m})^{2}}{6.6743 \times 10^{-11}\; {\rm N \cdot m^{2} \cdot kg^{-2}} \times 5.98 \times 10^{24}\; {\rm kg}} \\ &\approx 11121\; {\rm kg}\end{aligned}[/tex].

Answer:

11,121 kg

Explanation:

Answer:

hiiiiiiiiiiiiiiiiii

mm

Answer:

It is called the angle of refraction

Answer: solute: sugar, coffee powder, salt, cocoa powder, liquid detergent, monosodium glutamate (vetsin).

solvent: cow's milk, water, fruit extract

Explanation:

A solution is a mixture that is made up of two or more substances including solute and solvent.

The solute is one which can be dissolved in a liquid part that is solvent. The solute can be liquid or solid. Solutes are sugar, salt, coffee powder, cocoa powder, liquid detergent, monosodium glutamate.

The solvent is one which dissolves in it solute particles or molecules. Solvent are cow's milk, water, and fruit extract.

Answer:

zero cause the positivity and negativity would cancel out

Explanation:

Answer: A

Explanation:

The guy above me was right

Motion is caused by the forces acting on a body. A body will move in the direction of in which the net force is greater. Therefore, objects 1 and 2 will not move but 3 and 4 will accelerate upward.

From the table ; the upward force of 18N is lesser than the force maintained by the objects at rest. Hence, objects 1 and 2 will not move.

However, objects 3 and 4 have forces 16N and 8N respectively which are lesser than the upward force, hence, the body will move upward since the upward force is greater.

Therefore, objects 1 and 2 will not move but 3 and 4 will accelerate upward.

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Answer:

One term that could be used as speed is sprint or rush

Explanation:

Answer:

25 m/s

Explanation:

Initial Velocity = 0 m/s

Time = 2.5 m/s

Acceleration due to gravity = 9.8

Final Velocity = ?

By the formula,

                           [tex]V_{f} = V_{i} + at[/tex]

                            [tex]V_{f}= 0 + 10 x 2.5[/tex]

                            Vf = 25 m/s

After 2.5 seconds the velocity of ball will be 24.5 m/s.

We have a brick falling from a certain height.

We have to find the velocity of the brick after 2.5 seconds of falling.

The motion of any object under the influence of gravity alone is called as free fall.

According to the question -

Initial velocity = u = 0 m/s

Final velocity = v m/s (say)

g = 9.8 m/[tex]s^{2}[/tex]

t = 2.5 seconds

Using the first equation of motion -

v = u + at

v = 0 + gt

v = 9.8 x 2.5 = 24.5 m/s

Hence, after 2.5 seconds the velocity of ball will be 24.5 m/s.

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#SPJ2

The food package will strike the ground at 11 degrees below the horizontal.

The time for the food package to hit the ground is calculated as follows;

h = vt + ¹/₂gt²

let the initial velocity be horizontal

4900 = 0(t) + (0.5 x 9.8)t²

4900 = 4.9t²

t² = 4900/4.9

t² = 1,000

t = √1,000

t = 31.62 s

vf(y) = vo + gt

vf(y) = 0 + (31.62 x 9.8)

vf(y) = 309.88 m/s

The horizontal component of the speed will be constant, while vertical component will change

[tex]tan(\theta ) = \frac{V_y}{V_x} \\\\\theta = tan^{-1} (\frac{V_y}{V_x})\\\\\theta = tan^{-1} (\frac{309.88}{58.1} )\\\\\theta = 79^0[/tex]

Angle below the horizontal = 90 - 79 = 11⁰

Thus, the food package will strike the ground at 11 degrees below the horizontal.

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Answer:

D) 25 m/s

Explanation:

In order to solve this problem we must use the following kinematics equation.

[tex]v_{f} =v_{i} +(a*t)\\[/tex]

where:

Vf = final speed [m/s]

Vi = initial speed = 0

a = acceleration = 5[m/s^2]

t = time = 5[s]

After 5 seconds the acceleration is equal to 5 [m/s^2]

Now replacing the values in the equation:

Vf = 0 + (5*5)

Vf = 25[m/s]

Answer: microwaves, infrared light, ultraviolet light, X-rays and gamma-rays

Hopes this helps!

Red light

Orange light

Green light

Violet light

Laser light

Bright light

Dim light

Sun light

Answer:

A. 0,11

Explanation:

Sorry if wrong. i hope this helps. thank you.

Answer:

-56.9 m/s

Explanation:

Given:

Δy = -165 m

v₀ = 0 m/s

a = -9.8 m/s²

Find: v

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (-9.8 m/s²) (-165 m)

v = -56.9 m/s

For a block of solid copper sits on a flat, level table. Copper has a density of 8. 94 ✕ 103 kg/m3, the volume of the block  is mathematically given as

V = 2.28x10^3

Generally, the equation for the volume of the block is mathematically given as

V = m/p

V = 20.4/8.94x10^3

V = 0.00228

V = 2.28x10^3

In conclusion, the volume of the block is

V = 2.28x10^3

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Frequency=

Now

Time period:-

[tex]\\ \rm{:}\dashrightarrow \dfrac{1}{\nu}[/tex]

[tex]\\ \rm{:}\dashrightarrow \dfrac{1}{1.25}[/tex]

[tex]\\ \rm{:}\dashrightarrow \dfrac{4}{5}[/tex]

[tex]\\ \rm{:}\dashrightarrow 0.8s[/tex]

Answer:

Explanation:

Waves and wave functions are direct ways to graph vibrational motion. Specifically, for cases dealing with vibrating strings. If you were to move a tensioned string up and down with your arm, you would produce a wave with a given frequency, period, and amplitude.