Explain why Earth is not a perfect sphere?

Earth surfaces are not all the same.

Earth's surface is smooth.

The Earth's shape bulges in the equator.

The Earth's atmosphere has affected its shape

Three different alloys used in home are brass, bronze and copper. Brass and bronze are used for utensils and copper is used in the electrical circuits.  

Alloys are the homogeneous mixture of metal mixed with metal or non metal. These alloys can't be separated by physical methods.            

The alloy brass and bronze are used for utensils and copper is used in the electrical circuits.                                                                                                                        

The properties of the alloys make it suitable for that application is the electrical conductivity and their melting point.

Brass and Bronze are bad conductors of electricity. On the other side, copper is used in electrical circuits.

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Answer:

B. The volume of an object is the same as the

weight of that object.

Explanation:

Every thing else is right and that one is wrong.

Answer:

B. The volume of an object is the same as the

weight of that object.

Explanation:

i hope it helps

Answer:

2381.4 N

Explanation:

1350 * 9.8 * .18 = 2381.4 N

Density can be found when mass and volume is known. The density of 5 liter of water is 1000kg/m³.

The density ρ of any substance is the ratio of mass m and its volume V.

ρ = m/V

Given is the mass of water as 5 kg and the volume is 5 liter.

as, 1 L = 10−³m³

So, 5 L = 5×10−³m³

Then, density would be

ρ = 5kg / 5×10−³m³

ρ = 1000 kg/m³

Thus, the density of 5l of water is 1000kg/m³.

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Answer:

a Internal core

b The lower mantle

c Butter dough

d Earth rocks

Answer:

Work = Force × distance

= m × g × d

= 12 × 9.8 × 0.5

= 58.8 N

If in the case , you need any help pleasee leg me know! [ you'll have to pay btw]

Answer:

emotions

Explanation:

emotions are how you feel and can happen any time

Hope it helps <333

Answer:

emotions affect your body and how you feel

Answer:

-19.39

Explanation:

The displacement of the dolphin in that time will be34.2826m.

To find the displacement of the dolphin, we can use the equations of motion. The displacement can be calculated using the following equation:

d = v initial(t) + 1/2at²

We are given that,

Acceleration (a) = -1.77 m/s² (negative because it's decelerating)

Time (t) = 3.33 s

Final velocity (final v final) = -8.77 m/s

To find the initial velocity, we can use another kinematic equation:

final= Vinitial + Vfinal =v initial +at

Now, plug in the values:

v initial= − 8.77m/s − ( −1.77m/s²)× 3.33s

v initial=−8.77m/s−(−1.77m/s²)×3.33s

v initial =- 2.8769m/s

Now that we have the initial velocity, we can find the displacement using the first equation:

d = v initial(t) + 1/2 at²

d = - 2.8769m/s  × 3.33 s + 1/2(-1.77 m/s²) × 3.33s

d = - 34.2826m

The displacement of the dolphin in that time is - 34.2826m. The negative sign indicates that the displacement is in the opposite direction of the initial velocity.

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A spring-loaded ballistic cart is in contact with a second cart. The velocity of the other cart is 0.25 m/s.

When there is no external force acting on the system, the initial momentum is equal to the final momentum.

Momentum is equal to the product of mass and its velocity.

According to the conservation of linear momentum,

m₁v₁ +m₂v₂ = m₁u₁ +m₂u₂

u and v represents the initial and final velocity. 1 and 2 represents the first and second cart.

Given is m₁ = 0.5 kg, m₂ =0.8kg, u₁ =u₂ =0 m/s and v₁ = 0.4 m/s.

Substituting the values in the conservation of momentum equation, we get the velocity of second cart is

0.5 x 0.4 + 0.8 x v₂ = 0.5 x 0 + 0.8 x 0

v₂ = +0.25 m/s (in the direction of first cart)

Thus,  the velocity of the other cart is 0.25 m/s.

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Answer:

Zero

Explanation:

When it reaches max height, it stops and begins to fall back down....at this point the velocity = 0

Answer:

Eddy Currents

Explanation:

Eddy currents are produced when a metal is moving through a magnetic field

Answer:

Probably cubic centimeters    cm^3

Explanation:

Answer:

option b

Explanation:

when the two forces act in opposite directions there effective magnitude decreases.

Answer:

b. difference between two factors

Explanation:

When two forces act in the opposite directions, the net force is the difference between them.

Answer:

Rest: cease work or movement in order to relax, sleep, or recover strength.

Motion: the action or process of moving or being moved.

The volume of the diluted (i.e the new) solution given the data is 147 mL

M₁V₁ = M₂V₂

1.75 × 84 = 1 × V₂

V₂ = 147 mL

Thus, the volume of the new solution is 147 mL

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Answer:

2600 cubic centimeters

Explanation:

Volume of the edible fruit is equal to :

⇒ Volume (fruit) - Volume (seed)

⇒ 4/3π(3r)³ - 4/3πr³

⇒ 27 x 4/3πr³ - 4/3πr³

⇒ 100 (27 - 1)

⇒ 2600 cubic centimeters

The volume of the edible fruit, rounded to the nearest cubic centimeter, is approximately 1188 cubic centimeters.

Given that the volume of the seed is 100 cubic centimeters, we can use the formula for the volume of a sphere to relate the radius and volume:

V(seed) = (4/3)πr³

100 = (4/3)πr³

Next, we can determine the radius of the fruit by multiplying the radius of the seed by 3:

R(fruit) = 3r

V(fruit) = (4/3)π(R(fruit)³ - r³)

V(fruit) = (4/3)π((3r)³ - r³)

V(fruit) = (4/3)π(27r³ - r³)

V(fruit) = (4/3)π(26r)

Now, substitute the value of r from the first equation into the expression for V(fruit):

V(fruit) = (4/3)π(26 × ∛(100/(4/3)π))

V(fruit) = 1188 cubic centimeters

Therefore, the volume of the edible fruit, rounded to the nearest cubic centimeter, is approximately 1188 cubic centimeters.

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The only option if Ellis wants to stick to one standard serving of alcohol is a 1.5 ounce shot of liquor with 40% alcohol.

In the United States, one standard serving of alcohol contains roughly 14 grams of pure alcohol, which is found in:

Thus, the only option if Ellis wants to stick to one standard serving of alcohol is a 1.5 ounce shot of liquor with 40% alcohol.

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This question involves the concepts of induced emf and magnetic field.

The wire has to move at a speed of "20 m/s".

The emf induced in a current carrying conductor when it passes through a magnetic field is given by the following formula:

[tex]E = vBl\\\\v=\frac{E}{Bl}[/tex]

where,

Therefore,

[tex]v=\frac{10\ volts}{(2.5\ T)(0.2\ m)}[/tex]

v = 20 m/s

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Answer:

Decreasing temperatures

Explanation:

Indicators of climate change :

Hence, option 1 which gives decrease in temperature is not a climate change indicator.

Answer:

Decreasing tempertures

Explanation:

The energy per second received by an eardrum will be 5.03×10⁻⁵ J/sec. The energy denotes the sound energy for the eardrum.

The passage of vibrations through matter is characterized as sound energy. When an item vibrates, sound energy is created, resulting in noise.

Sound vibrations induce pressure waves to flow through a material like air, water, wood, or metal.

The threshold of hearing is,5×10⁻¹⁷ sec.

The energy per second received by the eardrum is found by the formula as;

[tex]\rm E_T = Area \times thresold \\\\ \rm E_T = \pi (4 \times 10^{-3})^2 \times 1 \times 10^{-12} \\\\ E_T =5.03 \times 10^{-17}\\\\[/tex]

Hence, the energy per second received by an eardrum will be 5.03×10⁻⁵ J/sec

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Answer:

Barred Spiral.

Answer:

21.6 kN

Explanation:

F = m * a

F = 54 000 * .4  = 21600 N

Answer:54,000 N

Explanation:

The correct statements about electric field lines are they point away from a positive charge, they point toward a negative charge and they never cross.

An electric field line is an imaginary line drawn through a region of empty space so that its tangent at any point on the line represents the direction of the electric field vector.

The electric field lines starts from the positive charge and terminates at the negative charge. These lines never intersect each other.

Thus, the correct statements about electric field lines are they point away from a positive charge, they point toward a negative charge and they never cross.

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Answer:

I drive my car at a speed of 30m/s is speed

I drive my car at a speed of 30m/s northward is velocity

Answer:

128J

Explanation:

K.E = MV² ÷ 2

K.E = 16 × 4² ÷ 2

K.E = 16 × 16 ÷ 2

K.E = 256 ÷ 2

K.E = 128J

:. it's kinetic energy is 128Joules(J)

Answer:

13.33 gm/cm^3

Explanation:

Displacement of liquid =

 34 gm /  2.3 gm/cm^3 = 14.783  cm^3

so the VOLUME of the object is 14.783 cm^3

  density  =  197 gm / 14.783 cm^3 = 13.33  gm/cm^3

Answer:

560 m/s

Explanation:

Given,

Frequency ( f ) = 80 hz

Wavelength ( λ ) = 7.0 m = 7m

To find : Velocity ( v )

Formula : -

v = f λ

v = 80 x 7

v = 560 m/s

Hence, the velocity of the wave is 560 m/s.

If the voltage decreases to one-third of its original amount while the resistance remains constant.  The resulting current will be 0.4 A.

The current is the stream of electrons flowing from positive terminal of the battery to the negative terminal so as to generate electricity.

The circuit has a current of 1.2 A.

When the resistance  is constant, the voltage is proportional to current. According to the ohm's law,

V₂ / V₁ = I₂ / I₁

Substitute V for V₁ , V /3 for V₂ , 1.2 for I₁ , we get the resulting current,

I₂ = 0.4 A

Thus, the resulting current will be 0.4 A.

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Answer:

1. False

some metals are ferromagnetic

2.True

3. True

4. True

5. False

The strength of electromagnetic can be increased by increasing the number of wire around it

#1

Very few like Fe,Ni ,Co are ferromagnetic.

#2

True

#3

True

#4

It's Orsterd experiment conclusion

#5

Because

[tex]\sf B=\mu_o nI[/tex]

If you decrease no of turns magnetic force decreases