If the temperature of an object is 30° C, which of the following temperatures would indicate the MOST heat that was removed from this object? A. A. 40° C B. B. 30° C C. C. 20° C D. D. 10° C

Answers

Answer 1

Answer: 10° C

Explanation:

The heat loss from the body can be defined as the condition in which the heat is moved out from the body and the body cools down.

In this case the heat from the body is lost so that its overall temperature decreases. This states that the temperature of the body should be below 30° C.

If most of the heat from the body having 30° C is removed, the correct option will be 10° C. The heat loss is 20° C in this case.

Hence, the correct answer is option D.

Answer 2

Answer:

The answer is D. I hope this helped you. I just did this same question.

Explanation:


Related Questions

Two small spheres with charges of 2.5 nC and the other 5.1 nC are sparated by a distance of 1.1 m. What is the electric potential between the two spheres? ​

Answers

Answer:

hy how are you now this is 2020 question but now it is 2022

Which of the following statements is true of both infrared radiation and ultraviolet radiation traveling in a vacuum?
A. They have the same energy
B. They have the same frequency
C. They travel at the same speed
D. They have the same wavelength

Answers

Answer:

b

Explanation:

Which characteristic of crude oil reflects its rate of evaporation?

Answers

Answer:

Crude oil is a light oil and is volatile. That's what makes it evaporate very fast.

HOPE IT HELPS :)

PLEASE MARK IT THE BRAINLIEST!

Answer:

Volatility

Explanation:

PLATO - "How quickly it evaporates."

Find the frequency of a wave of wavelength 2.5m and speed 400 m/s

Answers

Answer:

The frequency of wave is 160Hz.

Explanation:

Given that the formula of speed is V = f×λ where V represents speed, f is frequency and λ is wavelength.

So first thing, you have to make frequency the subject by dividing wavelength on both sides :

[tex]v = f \times λ \: [/tex]

[tex]v \div λ = f \times λ \div λ[/tex]

[tex]f = \frac{v}{λ} [/tex]

Next you have to substitute the value of v and f into the formula :

Let λ = 2.5m,

Let v = 400m/s,

[tex]f = \frac{400}{2.5} [/tex]

[tex]f = 160Hz[/tex]

The position of an object at any time t is given by s(t)=3t4−40t3+126t2−9. i. Determine the velocity of the object at any time t. [5 marks] ii.Does the object ever stop changing? [5 marks] iii.When is the object moving to the right and when is the object moving to the left?

Answers

Answer:

1.) V = 12t^3 - 120t^2 + 252t

2.) No

3.) At positive V and negative V

Explanation: Given that the position of an object at any time t is s(t)=3t4−40t3+126t2−9.

1.) To determine the velocity V, we will differenciate the equation above with respect to t.

V = ds/dt

ds/dt = 12t^3 - 120t^2 + 252t

Therefore,

V = 12t^3 - 120t^2 + 252t

2.) The equation above depict an exponential equation which proves that the object never stops changing.

3.) The object moves to the right at positive velocity V and moves to the left at negative velocity V

i. The velocity of the object at any time is V = 12t^3 - 120t^2 + 252t

ii. The object is Not changing.

iii. At positive V and negative V.

Calculation of the velocity:

Since the position of an object at any time t is

s(t)=3t4−40t3+126t2−9.

1.

Here the velocity is

V = ds/dt

ds/dt = 12t^3 - 120t^2 + 252t

SO,

V = 12t^3 - 120t^2 + 252t

2.) The equation above represents an exponential equation that proves that the object never stops changing.

3.) The object moves to the right at positive velocity V and moves to the left at negative velocity V

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An element located at the intersection of period 7 and group 2

Answers

Answer:

the answer is Ra 88 (radium)

The reason we can read print from any direction is that

A. letters emit black light in all directions

B. letters absorb black light from all directions

C. the white part of a page reflects light in all directions

D. All of the above

E. None of the above

Answers

The answer is B and C are both true.

The reason we can read print from any direction is that the white part of a page reflects light in all directions. Hence, option C is correct.

What is reflection?

Reflection is an optical phenomenon, that the light when hit on a transparent object reverts back in the straight direction making the material surface gleaming.

White light is the mixture of all the visible lights. White material absorbs all colors and all of them are reflected back making its color white. Whereas, black light is not reflecting any color but absorbs all. Thus, no reflection causes no color except the darkness.

Letters in white background is visible in all direction since white  light reflects in all directions. Thus, black letters printed in in a white page will be readable in all directions.

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Which drum would make a sound that fades away faster - one that makes a loud sound or one that makes a more mellow sound Why?

Answers

Answer: one that makes a more mellow sound

Explanation:

One that makes a more mellow sound will have a constant frequency than the one that has a loud sound.

Fading away of sound waves depends on the wavelength of the sound. The one that has a loud sound with high frequency will have a brighter sound. While the more mellow one will have the bassier sound. Therefore, the sound with a more mellow sound will fade away faster.

What are the highest parts of a transverse wave called?

Answers

It’s called a crest
the creast is what is called

A physicist is investigating a beam of laser light of wavelength 550 nm. The light strikes a target that is 189 meters away from the source of the light. What is the travel time of the light from the source to the target? Let the speed of light c = 3.00 × 10^8 m/s.

Answers

Answer: here you go I was looking for this answer everywhere,I have it now so it’s 6.30 x 10^-7 s

Explanation:

I hope this helps☺️

Answer:

I can confirm that it is 6.30 x 10^-7

Explanation:

Which book in the picture below has the most amount of gravitational potential energy?
Book A
Book B
Book C

Answers

I would say Book B.

Gravitational Potential Energy is mass * gravity * height.

Gravity is same for the same, it's constant.

Book C is the lowest, so it has less height.

And Book B is clearly the more massive of Book A and Book B, which are the same height.

Book B

Book B because it has the most


What is the velocity of light as it moves from air to diamond.

Answers

Answer:

The angles of reflection on both sides of the normal are always equal, so the angle of reflection is 70°. 2. The speed of light in diamond is 1.24 x 108 m/s.

A -0.00325 C charge q1 is placed 5.62 m from a second charge q2. The first charge is repelled with a 48900 N force. What is the value of q2? C
Include the sign of the charge, - or +

Answers

Answer: q2 = -0.05286

Explanation:

Given that

Charge q1 = - 0.00325C

Electric force F = 48900N

The electric field strength experienced by the charge will be force per unit charge. That is

E = F/q

Substitute F and q into the formula

E = 48900/0.00325

E = 15046153.85 N/C

The value of the repelled second charge will be achieved by using the formula

E = kq/d^2

Where the value of constant

k = 8.99×10^9Nm^2/C^2

d = 5.62m

Substitutes E, d and k into the formula

15046153.85 = 8.99×10^9q/5.62^2

15046153.85 = 284634186.5q

Make q the subject of formula

q2 = 15046153.85/ 28463416.5

q2 = 0.05286

Since they repelled each other, q2 will be negative. Therefore,

q2 = -0.05286

Answer:

-0.05286

Explanation:

acellus

what is the frequency of a ocean wave that is traveling at a speed of 45 m/s if it has a wavelength of 3 meters? please show work

Answers

Answer: Frequency = 15Hz

Explanation:

Given that

Wavelength (λ) = 3 m

Wave speed V = 45 m/s

Wave speed is the product of frequency and wavelength. That is

V = f(λ)

Substitute wavelength and wave speed into the formula

45 = f × 3

Make f the subject of the formula

f = 45/3

f = 15 Hz

Therefore, the frequency of the ocean wave is 15 Hz

5)
Sun spots are believed to be most closely related to the sun's
A)
corona
B)
period of rotation
C)
magnetic field
D)
changing size

Answers

Answer:

B

Explanation:

What is the index for a type of oil if light has a velocity of 2.5 x 10^(8) m/s in this
substance?

Answers

Answer:

1.2

Explanation:

Data obtained from the question include:

Velocity of light in the oil (V) = 2.5x10^8m/s

Velocity of light in air (C) = 3x10^8m/s

Refractive Index (n) =.?

The rafractive index (n) for the oil is given by:

Rafractive index (n) = Velocity in air (V) /velocity in oil (V)

n = C/V

n = 3x10^8 / 2.5x10^8

n = 1.2

Therefore, the Refractive Index of the oil is 1.2.

The tire on this drag racer is severely twisted: The force of the road on the tire is quite large(most likely several times the weight of the car) and is directed forward as shown. Is the car speeding up or slowing down? Explain.

Answers

Answer: Speeding Up

Explanation:

Force is proportional to the acceleration of an object. The greater the force, the more acceleration will be produced.

When the force on the tire is equal to the weight of the car, the car is reaching a stability as a result of increase in motion.

But when the force of the load on the tire is quite large(most likely several times the weight of the car) and is directed forward, then, the car is at high speed.

Which of the following processes occurs in the cells of plants?

C.production of food through photosynthesis
B. removal of wastes
A. exchange of CO2 and O2
(pick all that apply)

Answers

Answer:

A., B. & C.

Explanation:

All apply, because all these happen in a plant.

The following processes that occur in the cells of plants:

C. production of food through photosynthesis

B. removal of wastes

A. exchange of CO2 and O2

Photosynthesis is a process by which green plants prepare their food by using carbon dioxide and water as reactant in the presence of sunlight to produce carbohydrate. The photosynthesis occurs in the cells of the leaves in plants. The removal of wastes in plants takes place by the stomatal pores present on the surface of leaves and by the lenticels present on the surface of stem. They allow the removal of excess water, and gaseous pollutant like carbon dioxide during respiration. Exchange of gases like carbon dioxide and oxygen occurs through respiration and photosynthesis. During respiration carbon dioxide is expelled out from the plant cells via stomata and oxygen is taken inside whereas the photosynthesis occurs during day time and fixes the atmospheric carbon dioxide and release the oxygen to the atmosphere as byproduct of photosynthesis.

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Which of the following does not require energy to be
accomplished?

a) moving car
B) a stationary inanimate object
C) growing a plant
D) getting a tan

Answers

Answer:

B

Explanation:

moving a car requires energy from gas, growing a plant requires energy from the sun, and getting a tan requires energy from the sun. So it must be a stationary inanimate object.

what are similiarities between young modulus bulk modulus and shear modulus​

Answers

The main difference between the three is that Young’s modulus is the ratio of tensile stress to tensile strain, the bulk modulus is the ratio of volumetric stress to volumetric strain and shear modulus is the ratio of shear stress to shear strain.

Three resistors, of 100, 200, and 300 ohms are connected in parallel. What is their equivalent resistance?

(Unit = ohms)

Answers

Answer:

Equivalent resistanfe in parallel (R):

1/R = 1/100 + 1/200 + 1/300

1/R = (6 + 3 + 2)/600

1/R = 11/600

R = 600/11 = 54.55 ohms

Equivalent resistance is 54.55Ω.

It is given that three resistors are,

[tex]R_{1}[/tex] = 100Ω, [tex]R_{2}[/tex] = 200Ω, and [tex]R_{3}[/tex] =300Ω

It is required to find the equivalent resistance when resistors connected in parallel.

What is the equivalent resistance?

As we know, when the resistors are connected in parallel,

[tex]\frac{1}{R} =\frac{1}{R_{1} } +\frac{1}{R_{2} }+\frac{1}{R_{3} }[/tex]

Putting the values, we have

[tex]\frac{1}{R} =\frac{1}{100} } +\frac{1}{200 }+\frac{1}{300 }[/tex]

[tex]\frac{1}{R} =\frac{(6+3+2)}{600}[/tex]

[tex]\frac{1}{R} =\frac{11}{600}[/tex]

[tex]R=\frac{600}{11}[/tex]

R=54.55Ω

 

Thus, equivalent resistance or total resistance when resistance are connected in parallel is 54.55Ω.

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Which statement explains how convection currents affect the movement of plates?

Answers

Answer:Heat from Earth’s interior causes currents of hot rising magma and cooler sinking magma to flow, moving the crust along with them.

Explanation:

Answer:

Heat from Earth’s interior causes currents of hot rising magma and cooler sinking magma to flow, moving the crust along with them.

Explanation:

A girl lifts a 160-N load to a height of 1 min 0.5 s. How much power is used to lift the load?
A. 320 W
B. 80 W
C. 32 w
D. 160 W

Answers

Answer: 320 W

Explanation:

P = W/t

W = F * d

F = 160 N

d = 1 m

t = 0.5 s

W = 160 * 1

W = 160 J

P = 160 J / 0.5 s

P = 320 W

2 Points
A student made a model to show the cycling of carbon.
Food → Consumers → Carbon dioxide → Producers > Sugar
Which necessary step in carbon recycling is missing from the student's
model?
A. Raindrops, because plants need water to grow
B. Pollinators, because they spread pollen from plant to plant
C. Decomposers, because they break down organic matter
D. Rocks, because they are broken down to make soil
SUBMIT
Mf b

Answers

Answer:

c

Explanation:

The step that has been missing in the carbon cycle has been decomposition, as it breaks the organic matter into simpler carbon that can be absorbed. Thus the correct option is C.

The carbon cycle can be defined as the transfer of carbon in varying forms in the atmosphere. Carbon has been present in the atmosphere in the form of air.

The air has been taken up by the plants for the formation of glucose. The atmospheric carbon has been converted into sugars by photosynthesis.

The sugar has been taken up by the consumers and is released back into the earth from the decomposition of the plants and waste from consumers or by the combustion process.

The carbon cycle can be given as:

Photosynthesis (Food) [tex]\rightarrow[/tex] Consumers

    Decomposition [tex]\downarrow[/tex]               [tex]\downarrow[/tex] Combustion

                            Carbon dioxide

The step that has been missing in the carbon cycle has been decomposition, as it breaks the organic matter into simpler carbon that can be absorbed. Thus the correct option is C.

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3. An electric field of 2.0 × 104 N/C is directed along the positive x-axis. a. What is the electric force on an electron in this field?

Answers

Answer:

The electric force on an electron in this field [tex]3.2\times 10^{-15}\ N[/tex].

Explanation:

We have,

Electric field of along the +x-axis is [tex]2\times 10^4\ N/C[/tex]

It is required to find the electric force on an electron in this field. The electric force acting on the particle is given by :

[tex]F=qE[/tex]

q is charge of electron

[tex]q=-1.6\times 10^{-19}\ C[/tex]

So,

[tex]F=1.6\times 10^{-19}\times 2\times 10^4\\\\F=3.2\times 10^{-15}[/tex]

So, the electric force on an electron in this field [tex]3.2\times 10^{-15}\ N[/tex].

The electric force on an electron throughout this field will be "3.2 × 10⁻¹⁵ N".

Electric field:

An electric field throughout a force created by a charge throughout proximity to its circumstances. Whenever additional charges come into contact with this field, they are subjected to this force.

A charge's electric field at quite a point seems to be the force that somehow a unit positive (+) charge will indeed personal experience if put at around that spot.

According to the question,

Electric field = 2 × 10⁴ N/C

Charge of electron, q = -1.6 × 10⁻¹⁹ C

We know the relation,

→ F = qE

By substituting the values, we get

      = [tex]1.6\times 10^{-19}\times 2\times 10^4[/tex]

      = [tex]3.2\times 10^{-15}[/tex] N

Thus the above answer is correct.

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Two students who live on planet X. They want to estimate the circumference. The two students synchronize their watches before one student leaves on vacation 600 miles due west to their home. They notice a 3 degree difference in altitude of the sun at local noon. What is the circumference of the planet?

Answers

Answer:

72000 miles

Explanation:

If the distance between the students is 600 miles, and this implies in a 3 degree difference in the sun position, that means this 600 miles is related to 3 degrees of the circunference of the planet.

So, to find the whole circunference of the planet, that is, 360 degrees, we just need to use a rule of three:

3 degrees -> 600 miles

360 degrees -> x miles

3x = 600 * 360

x = 600 * 360 / 3 = 72000 miles

Momentum is a vector quantity because it includes velocity, which is also a
vector quantity.
A. True
B. False
please:(​

Answers

Answer: A; True

Explanation: Momentum is known to be a vector quality, and thus has been proven by modern scientists and resulting in this answer being true.

Hope this helps <3

Stay safe, stay warm

-Carrie

Ps. it would mean a lot if you marked brainliest (=

A negative test charge experiences a force to the right as a result of an electric field. Which is the best conclusion to draw
based on this description?
3
The electric field points to the left because the force on a negative charge is opposite to the direction of the field.
The electric field points to the right because the force on a negative charge is in the same direction as the field.
No conclusion can be drawn because the sign of the charge creating the field is unknown.
No conclusion can be drawn because the amount of charge on the test charge is unknown.

Answers

Answer:

The correct option is (a).

Explanation:

We have, a negative test charge experiences a force to the right as a result of an electric field. The electric force acting on a charged particle is given by :

F = qE

q is charged particle, E is electric field

The direction of electric force is in the direction of electric field. For a negative charge, the electric field points to the left because the force on a negative charge is opposite to the direction of the field.

7) A boy is flying to kites at the same time,
He has 380 feet of line out to one kite and
420 ft. to the other. He estimates the angle
between them to be 30 degrees.
Approximate the distance between the
kites.

Answers

Answer:

hope this helps :)

Explanation:

Which term is defined as long chains of carbon molecules?

atoms


polymers


bonds


monomers

Answers

Atoms that’s the right answer

Answer:

Hope it helps

Explanation:

MONOMERS

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