Fill in the blank

A pot of water is placed on the cook top. For a while the temperature of the water increases,
indicating the____
is increasing.

Answer:

Determine how to separate gasoline from other substances in petroleum

Answer: A. New, high-tech materials are used to make prosthetic limbs for  people who need them

Explanation:

Engineering is an immensely important science to us as humans for through its development of tools, machines, engines and structures, human lives have been made better in just about every field.

One of these fields is the medical field. In the past people who lost limbs could say good bye to a normal life or at least a semblance of one but now, due to advancements in Engineering, high-tech materials can now be used to make prosthetic limbs for people who need them.

Answer:

38.2 m/s

Explanation:

Given:

Δy = 56.8 m

a = -9.8 m/s²

t = 5.8 s

Find: v₀

Δy = v₀ t + ½ at²

56.8 m = v₀ (5.8 s) + ½ (-9.8 m/s²) (5.8 s)²

v₀ ≈ 38.2 m/s

Answer:

Part A:    [tex]\mathbf{Q =94 \ J}[/tex] to two significant figures

Part B:    [tex]\mathbf{Q =160 \ J}[/tex] to two significant figures

Part C:    [tex]\mathbf{Q =220 \ J}[/tex] to two significant figures

Explanation:

Given that :

mass of the hydrogen = 0.30 g

the molar mass of hydrogen gas molecule = 2 g/mol

we all know that:

number of moles = mass/molar mass

number of moles = 0.30 g /2 g/mol

number of moles = 0.15 mol

For low temperature between the range of 50 K to 100 K, the specific heat at constant volume for a diatomic gas molecule = [tex]C_v=\dfrac{3}{2}R[/tex]

For Part A:

[tex]Q = mC_v\Delta T[/tex]

[tex]Q= 0.15 \ mol (\dfrac{3}{2})(8.314 \ J/mole.K )(100-50)K[/tex]

[tex]Q= 0.15 \times (\dfrac{3}{2}) \times (8.314 \ J )\times (50)[/tex]

[tex]Q=93.5325 \ J[/tex]

[tex]\mathbf{Q =94 \ J}[/tex] to two significant figures

Part B. For hot temperature, [tex]C_v=\dfrac{5}{2}R[/tex]

[tex]Q = mC_v\Delta T[/tex]

[tex]Q= 0.15 \ mol (\dfrac{5}{2})(8.314 \ J/mole.K )(300-250)K[/tex]

[tex]Q= 0.15 \times (\dfrac{5}{2}) \times (8.314 \ J )\times (50)[/tex]

[tex]Q=155.8875 \ J[/tex]

[tex]\mathbf{Q =160 \ J}[/tex] to two significant figures

Part C. For an extremely hot temperature, [tex]C_v=\dfrac{7}{2}R[/tex]

[tex]Q = mC_v\Delta T[/tex]

[tex]Q= 0.15 \ mol (\dfrac{7}{2})(8.314 \ J/mole.K )(2300-2250)K[/tex]

[tex]Q= 0.15 \times (\dfrac{7}{2}) \times (8.314 \ J )\times (50)[/tex]

[tex]Q=218.2425 \ J[/tex]

[tex]\mathbf{Q =220 \ J}[/tex] to two significant figures

Part A)  Heat needed to change the temperature of the gas from 50 K to 100 K is 94J.

Part B) Heat needed to change the temperature of the gas from 250 K to 300 K is 160J.

Part C) Heat needed to change the temperature of the gas from 2250 K to 2300 K is 220J.

The increment in temperature adds up the thermal energy into the object. This energy is Heat energy.

Given is the mass of the hydrogen = 0.30 g and the molar mass of hydrogen gas molecule = 2 g/mol

Then, number of moles = mass/molar mass

number of moles = 0.30 g /2 g/mol = 0.15 mol

Part A) For low temperature between the range of 50 K to 100 K, the specific heat at constant volume for a diatomic gas molecule Cv =3/2R

Q =m Cv ΔT

Q = 0.15 mol x 3/2 x 8.314 x (100 - 50)

Q = 93.5325 Joules.

Q = 94 J to two significant figures.

Part B) For hot temperature, Cv = 5/2 R

Heat needed, Q =m Cv ΔT

Q = 0.15 mol x 5/2 x 8.314 x (300 - 250)

Q = 155.8875Joules.

Q = 160 J to two significant figures.

Part C) In case of extremely hot temperature, Cv =7/2R

Heat needed to change the temperature from 2250 K to 2300 K

Q = 0.15 mol x 7/2 x 8.314 x (2300 - 2250)

Q = 218.2425 J

Q = 220J

Learn more about heat.

https://brainly.com/question/13860901

#SPJ5

Answer:

speed = distance ÷ time.

speed=50÷ 5

=10m/s

A bike moves 50 meters in 5 seconds, then the speed of the bike would be 10 m/s.

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second. The generally considered unit for speed is a meter per second.

As given in the problem a bike moves 50 meters in 5 seconds. This means the total distance covered by the bike is 50 meters, and the total time taken by the bike is 5 seconds.

The total distance covered by the bike = 50 meters

The total time taken to cover the 5 meters = 5 seconds

speed = the total distance covered by the bike/the total time

           = 50 meters/5 seconds

           = 10 m/s

Thus, the speed of the bike comes out to be  10 m/s.

Learn more about Velocity from here, refer to the link ;

brainly.com/question/18084516

#SPJ2

Answer:

To go to heaven

Explanation:

The chicken was on a dark path

Answer:

to get to the other side.

Explanation:

wanna rethink ur childhood? this joke is actually dark. the chicken was suicidal or depresssed so it crossed the road and got ran over by a car. so "to get to the other side" means the afterlife, or, heaven.

yea found this out like a week ago :/

Answer:

0.43

Explanation:

because i said it was

Answer:

0.43

Explanation:

Because he said it was (and yes it is right)

Answer:

The average speed of a neon atom is 414.04 m/s

Explanation:

Given;

energy of the neon gas, E = 1200 J

mass of the neon gas, m  = 14 g = 0.014 kg

The speed of the neon atom is given by Maxwell-Boltzmann;

E = ¹/₂mv²

where;

v is the average speed of the neon atom

1200 = ¹/₂(0.014)v²

2 x 1200 = 0.014v²

2400 = 0.014v²

v² = 2400 / 0.014

v² = 171428.57

v = √ 171428.57

v = 414.04 m/s

Therefore, the average speed of a neon atom is 414.04 m/s

The average speed of a neon atom will be 414.04 m/s.

The total distance traveled by an object divided by the total time taken is the average speed.

The average speed of an object indicates the pace at which it will traverse a distance. The metric unit of speed is the meter per second.

The given data in the problem is;

E is  the energy of the neon gas, = 1200 J

m is the mass of the neon gas= 14 g = 0.014 kg

v is the speed of the neon atom=?

From the Maxwell-Boltzmann equation;

[tex]\rm E= \frac{1}{2} mv^2 \\\\ v=\sqrt{\frac{2E}{m} } \\\\ v=\sqrt{\frac{2 \times 1200 }{0.014} } \\\\ v= 414.04 \ m/s[/tex]

Hence the average speed of a neon atom will be 414.04 m/s.

To learn more about the average speed refer to the link;

https://brainly.com/question/12322912

Answer:

Positively charged particles in atoms are D. Protons

Explanation:

Negative = Electrons

Neutral = Neutron

Positive = Proton

Answer:

The steam will start to condense at 6.6 mm into the pipe

Explanation:

The volume flow rate =π×(50/1000)²/4×10 = 0.0196 m³/s

The specific volume of the steam = 1.769 m³/kg

Therefore;

The mass flow rate = 0.0196/1.769 = 0.011099  kg/s

The resistance of the insulation material = ln(0.075/0.05)/(2×π×0.075) = 0.860 K/W

The resistance of the outside film of the insulator = 1/(15×2×π×0.075×1) = 0.14147 K/W

The total resistance = 0.14147 + 0.860 = 1.00147 K/W

1/(UA) = 1.00147 K/W

A = 2×π×0.05×1

1/U = 0.3146

U = 3.178 W/m² K

We have;

T(x) = T₀ + (Tin - T₀) exp(-UπDx/mcp)

Therefore, when T(x) = 100°C, we have;

100 = 20 + (120 - 20)exp(-3.178×π×0.05x/(0.011099 × 1.33))

Solving, we get

x = 6.597× 10⁻³ m ≈ 6.6 mm

Therefore, the steam will start to condense at 10 mm into the pipe.

Answer:

42.9 m.

Explanation:

The following data were obtained from the question:

Initial velocity (v₀) = 29 m/s

Acceleration due to gravity (g) = 9.8m/s²

Maximum height (h) =.?

The maximum height reached can be obtained by using the following formula:

H = v₀² /2g

Where:

H is the maximum height reached.

v₀ is the initial velocity.

g is the acceleration due to gravity.

H = v₀² /2g

H = (29)² / (2 × 9.8)

H = 841 / 19.6

H = 42.9 m

Therefore, the maximum height reached by the arrow is 42.9 m

Answer:

y = 165.8 m

Explanation:

This is an exercise in kinematics that we must solve in parts,

Let's start with the final part where we have more data, the final velocity of the student and jet is zero, the upward acceleration is

          a = 4g = 4 9.8 = 39.2 m /s²

Let's find the initial velocity and the height

         v² = v₂² + 2 a y

         0 = v₂² + 2 ay

         2ay = - v₂²

          v₂² = 2a y

Let's write the equation for the first part

student

          v₂² = v₀² - 2 g (y₀ -y)

in this case the student jumps v₀ = 0

          v₂² = 2 g (y₀ -y)

the total height is y₀ = 829 m

let's solve the system of equations by equating

          2ay = 2 g (y₀ -y)

           2a y = 2 g y₀ - 2g y

          2 y ( g + a) = 2 g y₀

          y = yo   g/(g +a)

          a= 4 g

         y = yo 1/5

calculate

         y = 829 /5

         y = 165.8 m

Answer:

the horizontal distance is 4.355 meters

Explanation:

The computation of the horizontal distance while travelling in the air is shown below:

Data provided in the question is as follows

Velocity = u = 7.70 m/s

H = 1.60 m

R = horizontal direction

Based on the above information

As we know that

R = u × time

where,

Time = [tex]\sqrt{\frac{2H}{g} }[/tex]

So,

= [tex]7.70\times \sqrt{\frac{2\times 1.60}{10} }[/tex]

= 4.355 meters

hence, the horizontal distance is 4.355 meters

Answer:

This question is an example of Boyle's gas law which states that the pressure of a given mass of a gas is inversely proportional to its volume at a constant temperature. The formula for this gas law is:

P1·V1 = P2·V2

P1 = initial pressure = 1.7 atm

V1 = initial volume = 4.25 L

P2 = final pressure = 2.4 atm

V2 = final volume = ?

Rearrange the formula to isolate V2. Substitute the known data and solve.

V2 = P1·V1/P2

V2 = 1.7 atm·4.25 L/2.4 atm = 3.0 L to two significant figures

The new volume will be ~3.0 L.

Explanation:

Answer:

(a) the student's apparent weight during the lift is 914.2 N

(b) the student's apparent weight during the fall is 0

Explanation:

Given;

student weight, W = 700 N

upward acceleration, a = 3 m/s²

Apply Newton's second law of motion;

The reading on the scale = student's apparent weight

(a) during the lift

R = W + F

R = W + ma

where;

m is mass of the student = 700 / 9.8  =  71.4 kg

R = 700 + 71.4(3)

R = 700 + 214.2 N

R = 914.2 N

(b) during the fall

R = W - ma

R = mg - ma

R = m(g-a)

here,  a = g

R = m(g - g)

R = m(0)

R = 0

Thus, during the free fall the student experiences weightlessness or zero apparent weight.

Answer:

9.6 m

Explanation:

h = y_0 t + 1/2 a t^2 = 1/2 (9.81) (1.4)^2 = 9.6 m.

Answer:

0.779m/s

Explanation:

A woman on a bridge 93.7m high sights a raft floating at a constant speed

She drops a stone from rest in an attempt to hit the raft

The stone is released when the raft had 4.94m to travel before passing under the bridge

The stone hits the water 1.53 m in front of the raft

The first step is to calculate the distance

= 4.94 m-1.53 m

= 3.41m

The time can be calculated as follows

= √2(93.7)/9.8

= √187.4/9.8

= √19.12244

= 4.373 secs

Therefore the speed of the raft can be calculated as follows

Speed= 3.41/4.373

= 0.779m/s

Hence the speed of the raft is 0.779m/s

Answer:

the only effect it has is to create more induced charge at the closest points, but the net face remains zero, so it has no effect on the flow.

Explanation:

We can answer this exercise using Gauss's law

      Ф = ∫ e . dA = [tex]q_{int}[/tex] / ε₀

field flow is directly proportionate to the charge found inside it, therefore if we place a Gaussian surface outside the plastic spherical shell.  the flow must be zero since the charge of the sphere is equal  induced in the shell, for which the net charge is zero. we see with this analysis that this shell meets the requirement to block the elective field

From the same Gaussian law it follows that if the sphere is not in the center, the only effect it has is to create more induced charge at the closest points, but the net face remains zero, so it has no effect on the flow , so no matter where the sphere is, the total induced charge is always equal to the charge on the sphere.

Answer:

8 + 2 n (second expression listed)

Explanation:

Since we don't know the number, we represent it with a letter (n).

Twice a number (two times that number) will therefore be: 2 n.

and the addition (sum) of 8 to such will lead to 8 + 2 n

The sum of 8 and twice a number is : 8 + 2 n

Answer:

C. It gains one or more electrons from another atom to become negatively charged.

Explanation: When it gains electrons it becomes negatively charged and is called an anion. When it loses electron(s) it becomes positively charged and is called a cation.

Hope this helps

Plz mark brainleist

An atom becomes an anion when it gains one or more electrons from another atom, resulting in a net negative charge. This process occurs through the formation of chemical bonds, typically in ionic compounds.

An atom's position in the periodic table affects how likely it is to gain electrons. Atoms in nonmetals and other elements on the right side of the periodic table have a stronger attraction for electrons and are more prone to undergo anion formation.

The extra electrons fill the highest energy level, creating a stable arrangement of electrons like that of a noble gas. Anions contribute to the overall charge balance of compounds and are crucial in a number of chemical processes.

To know more about Atom :

https://brainly.com/question/1566330

#SPJ6.

Answer:

The magnitude of electrostatic force on each charge is quarter of the magnitude of initial electrostatic force. ( ¹/₄ F)

Explanation:

The electrostatic force between two charges is given by Coulomb's law;

[tex]F = \frac{kQ_1Q_2}{r^2}[/tex]

where;

Q₁ and Q₂ are the magnitude of the charges

r is the distance between the charges

k is Coulomb's constant

Since the charges are identical;

Q₁ = Q

Q₂ = Q

the electrostatic force experienced by each charge is given by;

[tex]F = \frac{kQ^2}{r^2}[/tex]

When each of the spheres has lost half of its initial charge;

Q₁ = Q/2

Q₂ = Q/2

[tex]F_2 = \frac{k(Q/2)(Q/2)}{r^2}\\\\ F_2 = \frac{k(Q)(Q)}{4r^2}\\\\F_2 = \frac{1}{4} (\frac{kQ^2}{r^2} )\\\\F_2 = \frac{1}{4} (F)[/tex]

Therefore, the magnitude of electrostatic force on each charge is quarter of the magnitude of initial electrostatic force.

Answer:

Nutritional intake:)Hope this helps.

Explanation:

Answer:

wouldn't it be 25 miles?? yeah

Explanation:

Answer:

The answer is "[tex]5.53 \ \frac{m}{s}[/tex]"

Explanation:

apply the formula for calculating the average velocity to the relative air

[tex]V_{PG} =V_{PA}+V_{AG}[/tex]

[tex]\Rightarrow V_{PA} = V_{PG} -V_{AG}[/tex]

Given value:

[tex]V_{AG} = -2 \ \frac{m}{s}[/tex]

[tex]V_{PG} =3.53[/tex]

[tex]\Rightarrow V_{PA} = 3.53 - (-2) \\\\\Rightarrow V_{PA} = 3.53 +2 \\\\\Rightarrow V_{PA} = 5.53 \\\\[/tex]

The final answer is "[tex]5.53 \ \frac{m}{s}[/tex]" in the south-east direction.

Answer:

A. A ball falling at 73 m/s and hitting the ground at 9.8 m/s

Explanation:

The equation for accleration is a= ▲v/▲t With a final velocity of 0 m/s minus the initial 73 m/s, at an acceleration of 9.8 m/s^2, the ball would take 7.45 seconds to hit the ground.

Answer:

Yes, change of height affect the g.

Explanation:

As gravity is indirectly proportion to height. So when,height increases gravity decrease and when the height decrease gravity increase.

Answer:

A) 3,  B) 3,  C)  3

Explanation:

The order of magnitude is a very useful unit for when you do not have a precision in the measurement, the way to find it is to take the number to scientific notation and then change the whole part to 101 if it is greater than or equal to five or 10 or less than five

A) take my age to seconds

for example if I am 25 years old.

I take the years to seconds

       age = 20 years (365 day / year) (24 h / 1 day) (3600 s / 1h)

      age = 630720000 s

we carry scientific notation

      age = 6.3072 10⁸ s

as the integer greater than five we change it by 10¹

      age = 10⁹s

The correct answer is 3

B) The number of beats per minute approximately 80 beats in a month we have

    # beats = 80 beats /min (60min / 1h) (24 h / 1 day) (30 day / 1 month)

    # _beats = 3456000 beats / month

   #_beats = 3,456 10⁶ beats / month

as the integer is less than five we change it by 10⁰

  #_beats = 10⁶

the correct answer is 3

C) the number of heartbeats in life

suppose a life expectancy of 80 years

    #_beats_total = 80 pulse /min (60min / 1h) (24 h / 1day) (365 day / year) 80 year

    #_total_beats = 3 363 840 000

    #_beats_total = 3.36384 10⁹

as the integer is less than five we change it by 10⁰

    #_beats_total = 10⁹

the correct answer is 3

Answer:

Hello the options to your question is missing attached below are the missing options

Answer :

Electrical forces are symmetrical, The electric repulsion of the Balloons is equal because electric forces between two objects are always symmetrical

Explanation:

The Balloons have the same amount of force exerted on them, because Electrical forces are symmetrical, The electric repulsion of the Balloons is equal because electric forces between two objects are always symmetrical, therefore the two Balloons are deflected to the same angle

Answer:

11 m/s south

Explanation:

The velocity of the passenger relative to the river bank is equal to the velocity of the passenger relative to the ferry, plus the velocity of the ferry relative to the river, plus the velocity of the river relative to the river bank.

v_passenger,bank = v_passenger,ferry + v_ferry,river + v_river,bank

If we take north to be positive and south to be negative:

v = 1.0 m/s + (-10 m/s) + (-2 m/s)

v = -11 m/s

v = 11 m/s south