Please answer this
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Answer:

weight= density ×volume× 9.8

mass=density×volume

Explanation:

[tex]weight = 0.12 \times 0.04 \times 0.04 \times 3.14 \times 13600 \\ \times 9.8 = 80.351 \: n \\ \\ mass = 0.12 \times 0.04 \times 0.4 \times 3.14 \times 13600 = \\ = 8.199 \: kg[/tex]

Answer: nonstick coating on steel

Explanation:

Answer:

Thermal expansion ,thermal contraction

Explanation:

They are different because it has different cause and chemical reactions

thermal contraction is a chemical reaction

Answer:

B Energy is released

Explanation:

Answer:

The result is that epicentres of earthquakes farther to the interior of the overriding plate will correspond to increasingly deep earthquakes.

Answer:

Explanation:

The mass of the box can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

a is the acceleration

From the question we have

[tex]m = \frac{10}{1.2} = 8.333... \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

there are 22 massive, positively charged, fundamental particles in the element's nucleus. Given this, the element is unquestionably titanium.

The nucleus of titanium contains 46 particles in total in which 22 protons and 26 neutrons.

The atomic nucleus can be described as the small and dense region containing of protons and neutrons at the center of an atom. An atom is made of a positively charged nucleus, with electrons surrounding it, bound together by electrostatic force.

Almost all of the mass of an atom is concentrated in the nucleus as the mass of electrons is negligible. Neutrons and Protons are bound together to create a nucleus by the nuclear force.

The diameter of the nucleus is about 1.70 fm for hydrogen to about 11.7 fm for uranium. Protons and neutrons are fermions, are the particles present inside the nucleus.

The titanium has 22 protons and 26 neutrons in its nucleus so it has 46 particles in its atomic nucleus.

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Answer:

B. contains substance s that are not mixed in a specific ratio

Explanation:

the proportion of constituents in a mixture can vary

How much negative charge has been removed from a positively charged electroscope if it has a charge of 7.5x10-11C?

If C is Coulombs then, −1 C is equivalent to the charge of approximately 6.242×10^18 electrons.

You already gave the answer: -7.5x10–11C

It is like asking: What colour is my white horse?

Now if you want to know how many electrons have been removed, then multiplying the number of electrons in a coulomb by the coulombs you have, you get 4.6815 x 10^8 electrons. Which is almost the same answer as before.

3.7 x 10^8 electrons are removed from a positively charged electroscope.

The magnitude of charge carried by one electron is 1.602 x 10^-19 C

From the question, we can see that the net charge on the electroscope is 6 x 10^-11 C

Given that;

6 x 10^-11 = 1.602 x 10^-19 n

Where n is the number of electrons removed from a positively charged electroscope

Therefore;

n = 6 x 10^-11/ 1.602 x 10^-19

n = 3.7 x 10^8 electrons

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Answer:

because there isn't any gravity there

Answer:

A vector quantity is a quantity that has both magnitude and direction.

Explanation:

Answer:

140 m/s

Explanation:

v = u + at

v = 8 + 3.5(40) = 140 + 8 = 140

Answer: B. two

Explanation:

There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.

However, In the absence of any forces, no force is required to keep an object moving.

This seems like a simple question, but if you wanted to get technical it would in fact be two forces. As there is still a miniscule amount of gravity.

Explanation:

Displacement= 600 m

Time= 5×60 = 300 sec

Velocity= Displacement/time

= 600/300

= 2 m/s

An applied force applied causes a body such as the spacecraft to move. The magnitude of the force determines the change in the velocity

What will happen to the spacecraft is given by option C. from among the possible question options.

C. The spacecraft will begin to move and it will continue moving until it is stopped by an equal and opposite force

Reason:

The possible question options obtained from a similar question includes;

A. The spacecraft will move for some time then stop slowly

B. Air resistance will prevent the spacecraft from moving

C. The spacecraft will begin to move and the motion will continue until a force equal and opposite to the applied force stops it

D. The quick push will not cause the spacecraft to move, as a quick push works on Earth only

The state of the space craft = Motionless

Location of the spacecraft = Deep space

Type of force applied = Quick push

The statement that describes what will happen = Required

Solution;

Let F, represent the force applied, and let Δt be the duration of the applied force, we have;

The impulse of the force, F × Δt = m·(v₂ - v₁)

Where;

m = The mass of the spacecraft

v₁ = The initial velocity of the spacecraft = 0

v₂ = Final velocity of the spacecraft

Plugging in v₁ = 0, gives;

F × Δt = m·v₂

The space craft is given a velocity, v₂, and according to Newton's First Law of Motion, it continues moving in a straight line until another force acts on it

Therefore, the correct option is option C. The spacecraft will begin to move and the motion will continue until it is stopped by an equal and opposite force

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Answer:

I believe it's C. a book that has no net force acting on it and is sitting on a table.

Answer:

The Answer would be C

In a series circuit , the current can only flow through only one path from start to finisb

Answer:

c

Explanation:

ytkjsgxhxkvgakavsvdjddhdbiwbe vs

The pressure due to water at the bottom of the tank  is 200000 Pascal.

It is the ratio between the force being applied and the surface area being applied to. The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure.

Given parameters:

Depth of the tank = 25 meter.

Depth of water in the tank: d = 25×4/5 meter = 20 meter.

Density of water: ρ = 1000 kg/m³.

Acceleration due to gravity: g = 10 m/s².

Hence, the pressure due to water at the bottom of the tank

= depth of water (d) × density of water (ρ) × acceleration of the gravity (g)

=  20 meter × 1000 kg/m³ × 10 m/s²

= 200000 Newton/meter²

=200000 Pascal.

Hence, the pressure due to water at the bottom of the tank  is 200000 Pascal.

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Answer: Given that:

Mass (m) = 20 g = 0.02 Kg,

temperature (T₁) = -10°C = -10+273 = 263 K

temperature (T₂) = 10°C = 10+273 = 283 K

Specific heat of water (Cp) = 4.187 KJ/Kg k

We know that Heat transfer (Q) = m. Cp.( T₂ - T₁)

                                                   = 0.02 × 4.187 × (283-263)

                                                Q = 1.67 KJ

Heat transferred is 1.67 KJ

Explanation:

Answer:

West

Explanation:

This is because the first caar has more mass

Answer:

Virchow

Explanation:

Rudolf Virchow

Answer:

It is Rudolf Virchow! Hope this help and if I could get brainliest that would be much appreciated.

Explanation:

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 30 g

volume = 30 mL

We have

[tex]density = \frac{30}{30} = 1 \\ [/tex]

We have the final answer as

Hope this helps you

3. The simple explanation for the Red Planet's color is that its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue. ... It does have an iron core, but abundant iron exists in its upper layers, also.

The total amount of time the ball would be in the air is 2.04 secs

To determine how long the ball will be in the air,

We will the equation for calculating total time of flight, T

For a projectile motion, the total time of flight of an object is given by

[tex]T = \frac{2usin\theta}{g}[/tex]

Where T is the total time of flight

u is the velocity of projection

θ is the angle of projection

and g is the acceleration due to gravity

From the question,

u = 10.0 m/s

θ = 90° (This is because the ball is kicked straight up)

Put these values into the equation,

[tex]T = \frac{2usin\theta}{g}[/tex]

[tex]T = \frac{2\times 10.0 \ sin90}{9.8}[/tex]

(NOTE: g = 9.8 m/s²)

∴ [tex]T = \frac{2\times 10.0 \times 1}{9.8}[/tex]

[tex]T = \frac{20}{9.8}[/tex]

T = 2.04 secs

Hence, the total amount of time the ball would be in the air is 2.04 secs

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Answer:

Explanation:

100.5=200.V2

V2 = 2,5L

Answer:

I don't know what your asking

Answer:

Displacement = 8.4m

Explanation:

Hope that this is helpful.

Have a great day.

[tex]v = 60.7m {s}^{ - 1} \: u \: = 5.26m {s}^{ - 1 } \: t = 15s \: \: \: \: \: \\ a \: = \frac{v - u}{t} \\ a \: = \frac{60 .7- 5.26}{15} \\ a = 3.7m {s}^{ - 28} \\ {v}^{2} = {u}^{2} + 2as \\ {60.7}^{2} = {5.26}^{2} + 2 \times 3.7 \times s \\ 60.7 =27 .7 + 2 \times 3.7s \\60.7 = 29.7 \times 3.7s \\ 60.7 - 29.7 = 3.7s \\ 31 = 3.7s \\ \frac{31}{3.7} = \frac{3.7s}{3.7} \\ s = 8.4m[/tex]

Answer:

A. 0.67 m/s² forward

Explanation:

F applied = 250 N

Fsin30 = 250/2 = 125N

F friction= 95 N

Fnet = F app - F fri

= 125-95

= 30 N ( forward)

Fnet = m a

30 = 45 a

a= 30/45

=2/3

= 0.67 m/s² (forward)