Select the correct answer from each drop-down menu. What types of energy are involved in a chemical reaction? is the energy required for a chemical reaction to take place, and is the energy associated with every substance.
Box one choices are: Activation energy, chemical energy and released energy
Box 2 choices are: absorbed energy, chemical energy and released energy ​

Answers

Answer 1

Answer: box one is chemical energy and box 2 is absorbed energy

Explanation:

Answer 2

Answer:

CHEMICAL ENERGY AND ABSORBED ENERGY srry caps on

Explanation:

your welcomeッ


Related Questions

The purpose of a cell phone cover is to protect your phone from impact forces. How does a cell phone case do this?

Answers

Answer:

it covers your phone so when you drop it it reduces the chance and breaking

A hydrogen atom is isolated in a vacuum chamber, the electron is now separated from the proton and moved to a distance 1 cm away. Let Fg be the magnitude of the gravitational force between the proton and electron, and let Fe be the magnitude of the electric force between the proton and electron. How does the ratio Fg/Fe change as the particles are separated

Answers

Answer:

hello your question is incomplete attached below is the complete question

answer: Fg / Fe does not change ; it is the same nonzero value for all separations ( A )

Explanation:

Given that distance between proton and electron is 1 cm

Fg = Gm1m2 / r^2

where :

G ( gravitational constant )= 6.67 * 10^-11 Nm^2 / kg^2

m1 ( mass of proton ) = 1.67 * 10^-27 kg

m2 ( mass of electron ) = 9.11 * 10^-31 kg

Electrical force

Fe = kq1q2 / r^2

k = 9*10^9

hence ;

Fg / Fe = (Gm1m2 / r^2) / (kq1q2 / r^2 )

            = Gm1m2 / kq1q2

Earth travels fastest in January and slowest in July. What is the most likely explanation for this?
A. Earth is nearest the Sun in July and farthest away in January.
B. Earth is nearest the Sun in January and farthest away in July.
C. Earth is nearest the Sun in April and farthest away in October.
D. Earth is nearest the Sun in October and farthest away in April.

Answers

Answer:

Earth is nearest the Sun in July and farthest away in July.

Explanation:

Answer:

Correct Answer: B.

Explanation:

Earth is nearest the Sun in January and farthest away in July. Explanation: According to Kepler's Second Law, a planet travels fastest when it is nearest its sun. This means that Earth is actually closest to the Sun in January, when it is winter in the northern hemisphere!

A cube has sides of length 10 cm and weighs 10 N.
Calculate the pressure when it rests on one side ....N/cm2

Answers

Answer:

P = r g h   where r here is the density m / V and then P is the pressre.

W (weight) = m g

m = 10 N / 9.8 m / s^2 = 1.02 kg

r (density) = m / V = 1.02 kg / 1000 cm^3 = .00102 kg/cm^3

P = .00102 kg / cm3 * 9.8 m/s^2 * 10 cm

P = .1 kg m / (s^2 cm^2)

Since 1  N = kg m / s^2    then P = .1 N / cm^2

More simply P = F / A = 10 N / 100 cm^2 = .1 N / cm^2

A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?

Answers

Answer:

A wave has a wavelength of 5 meters and a frequency of 3 hertz.

Explanation:

in which medium does the speed of air is the greatest? explain why?​

Answers

Answer:
Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it.

The speed of air greatest in a medium with high pressure. Air is moving from high pressure to low pressure areas called the winds.

What are winds?

The natural movement of air or other gases in relation to a planet's surface is referred to as wind. There are many different sizes of winds, ranging from thunderstorm flows that last only a few minutes to local breezes.

Large-scale atmospheric circulation is primarily brought on by the planet's rotation and the difference in temperature between the equator and the poles (Coriolis effect).

The air can move through a medium as well through vacuum. Air blows with the highest speed when the medium have higher temperature and pressure.

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a brown bear runs at the speed of 9.0m/s with 23,000 j of kinetic energy

Answers

kinetic energy stored into a brown bear so it would be 15,000

1. Which of the following best describes a neutral solid object that is charged by conduction?

The electrons in the neutral solid object relocate when a charged object is brought near.
The protons in the neutral solid object relocate when a charge object is brought near.
The electrons in the neutral object transfer onto a positively charged object.
The protons in the neutral object transfer onto a negatively charged object.

Answers

Answer:

C: The electrons in the neutral object transfer onto a positively charged object.

Explanation:

In conduction, when we charge one object with another, both of them will now have the same type of charge. Thus, in conduction, a positive object is used to charge a neutral object, then it means that both objects become charged positively charged. Electrons are positive charges.

Thus electrons in the neutral object are transferred onto a positively charged object and so option C is right.

QUESTION 2 DOK 3 A Thompson's gazelle has a maximum acceleration of 4.5 m/s2 At this acceleration, how much time is required for it to reach a speed of 40 km/h?​

Answers

Answer:

2.47 s

Explanation:

Convert the final velocity to m/s.

40 km/h → 11.1111 m/s

We have the acceleration of the gazelle, 4.5 m/s².

We can assume the gazelle starts at an initial velocity of 0 m/s in order to determine how much time it requires to reach a final velocity of 11.1111 m/s.

We want to find the time t.

Find the constant acceleration equation that contains all four of these variables.

v = v₀ + at

Substitute the known values into the equation.

11.1111 = 0 + (4.5)t 11.1111 = 4.5t t = 2.469133333

The Thompson's gazelle requires a time of 2.47 s to reach a speed of 40 km/h (11.1111 m/s).

how temperature, surface tension and the diameter of the tube affect capillary action.​

Answers

The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the surface material is stronger than the cohesive forces between the water molecules. ... Water wants to stick to the glass and surface tension will push the water up, until the force of gravity prevents further rise.

Narrower tube openings allow capillary action to pull water higher

Will give brainliest!! Pls answer! HELP ME!!!!!!

Answers

Answer:

See the explanation.

Explanation:

Q9. Irregular reflection happens when a set of parallel beams are reflected from non-smooth surface which results in non-parallel reflected beams.

Q10.

i) Periscope

ii) There are different types of periscopes but the main characteristic of this instrument is observation over the obstacles or in general objects that are not in the line-of-sight. Basic Periscope uses parallel angled mirrors to project objects that are above the surface in submarines.

What is the magnitude and direction of the momentum of a 1200 kg truck traveling at 20m/s towards the east

Answers

Given :

A 1200 kg truck traveling at 20 m/s towards the east.

To Find :

The magnitude and direction of the momentum.

Solution :

We know, momentum is given by :

Momentum, P = mv

P = 1200 × 20 kg m/s

P = 24000 kg m/s

Now, we know, direction of momentum is same as the direction of velocity.

Therefore, momentum of truck is 24000 kg m/s and direction is towards the east.

can some one explain me big bang theory ?​

Answers

Answer:

The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today.

A golf ball of mass m is hit by a golf club so that the ball leaves the tee with speed v. The club is in contact with the ball for time T. The average force of the club on the ball during the time T is:

Answers

Answer:

Explanation:

Given

Mass = m

Time = t

Force = mass × acceleration ..... 1

Where acceleration = velocity/time

Ave Force = m×∆v/∆t

= mv/t

A spring with a spring constant of 500 N/m is stretched 1 meter in length. How much elastic potential energy does the spring have stored in it?

Answers

Answer:

E =250 J

Explanation:

Given that,

The spring constant of the spring, k = 500 N/

It is stretched to a distance of 1 m

We need to find how much elastic potential energy does the spring have stored in it.

The energy stored in the spring is called elastic potential energy. It is given by the formula as follows :

[tex]E=\dfrac{1}{2}kx^2\\\\E=\dfrac{1}{2}\times 500\times 1^2\\\\E=250\ J[/tex]

So, 250 J of energy is stored in the spring.

A 60 kg swimmer suddenly dives from a 150 kg raft with a speed of 1.5 m/s. The raft is initially at
rest. What is the speed of the raft immediately after the diver jumps if the water has negligible
effect on the raft?

Answers

Answer:

v2 = 0.6 m/s in opposite direction

Explanation:

The computation of the speed of the raft is as follows

The center of system mass would be remains at the same place also it has no external force applied

Therefore

V = 0

So,  

M1.V1= - (M2.V2)

where,

M1 = 60 kg, V1 = 1.5 m/s

M2 = 150 kg

Now  

60 × 1.5 = - 150 × v2

v2 = -0.6 m/s

v2 = 0.6 m/s in opposite direction

2.Find the magnitude and direction of the resultant velocity vector for the following perpendicular velocities: a. a fish swimming at 3.0 m/s relative to the water across a river that moves at 5.0 m/s b. a surfer traveling at 1.0 m/s relative to the water across a wave that is traveling at 6.0 m/s

Answers

Answer:

a. The magnitude of the resultant velocity vector of the fish is approximately 5.83 m/s

The direction of the resultant velocity vector of the fish is approximately 30.93° relative to the direction of the river

b. The magnitude of the resultant velocity vector of the surfer is approximately 6.083 m/s

The direction of the resultant velocity vector of the surfer is approximately 9.46° relative to the direction of the wave

Explanation:

a. The given parameters of the fish and the river are;

The speed with which the fish is swimming across the river, v₁ = 3.0 m/s

The velocity  with which the river is flowing, v₂ = 5.0 m/s

Therefore, in vector form, we have;

v₁ = 3.0·j

v₂ = 5.0·i

The resultant velocity, R = v₁ + v₂ = 5.0·i + 3.0·j

∴ R = 5.0·i + 3.0·j

The magnitude of the resultant velocity vector, [tex]\left | R \right |[/tex] = √(5.0² + 3.0²) =√34 ≈ 5.83

The magnitude of the resultant velocity vector,  of the fish,  [tex]\left | R \right |[/tex]  ≈ 5.83 m/s

The direction of the resultant velocity of the fish, θ = arctan(3.0/5.0) ≈ 30.93°

Therefore, The direction of the resultant velocity vector of the fish, θ ≈ 30.93° relative to the direction of the river

b. The given parameters of the surfer and the wave are;

The speed with which the surfer is travelling, v₁ = 1.0 m/s

The speed of the wave travelling across, v₂ = 6.0 m/s

Therefore, in vector form, we have;

v₁ = 1.0·j

v₂ = 6.0·i

The resultant velocity, R = v₁ + v₂ = 1.0·i + 6.0·j

∴ R = 1.0·i + 6.0·j

The magnitude of the resultant velocity of the surfer, [tex]\left | R \right |[/tex] = √(1.0² + 6.0²) =√37 ≈ 6.083

The magnitude of the resultant velocity vector of the surfer, [tex]\left | R \right |[/tex]  ≈ 6.083 m/s

The direction of the resultant velocity of the surfer, θ = arctan(1.0/6.0) ≈ 9.46°

Therefore, The direction of the resultant velocity vector of the surfer, θ ≈ 9.46° relative to the direction of the wave

How much would a 25 kg suitcase weigh on the surface of…?

a. Mercury

b. Mars

c. Saturn

d. Pluto

Answers

Answer:

a) [tex]W_{Mercury}=92.5 N[/tex]

b) [tex]W_{Mars}=92.8 N[/tex]

c) [tex]W_{Saturn}=261.0 N[/tex]

d) [tex]W_{Pluto}=15.5 N[/tex]

Explanation:

First of all, we need to remember the value of gravity acceleration on each planet.

[tex]g_{Mer}=3.70 m/s^{2}[/tex]

[tex]g_{Mar}=3.71 m/s^{2}[/tex]

[tex]g_{Sat}=10.44 m/s^{2}[/tex]

[tex]g_{Plt}=0.62 m/s^{2}[/tex]

The definition of weigh is the product between the mass and the gravity acceleration, therefore we will have:

a) [tex]W_{Mercury}=25*3.70=92.5 N[/tex]

b) [tex]W_{Mars}=25*3.71=92.8 N[/tex]

c) [tex]W_{Saturn}=25*10.44=261.0 N[/tex]

d) [tex]W_{Pluto}=25*0.62=15.5 N[/tex]

I hope it helps you!

Which of the following is evidence that a physical change has
occurred? *
a. Broken glass
b. Rust
c. Bubbles
d. Formation of a solid precipitate

Answers

Broken glass will be the best answer because when a physical change occurs it’s still the same substance and has the same ability to the the same so yea. Hope this helps

Answer:

Broken glass

Explanation:

which rock is most likely phyllite

Answers

Answer/Explanation:

Phyllite is a very common metamorphic rock, found in many parts of the world. It forms when sedimentary rocks are buried and mildly altered by the heat and directed pressure of regional metamorphism.

Answer:

metamorphic rock

Explanation:

Phyllite is a very common metamorphic rock, found in many parts of the world. It forms when sedimentary rocks are buried and mildly altered by the heat and directed pressure of regional metamorphism.

Why can you see an apple as green and not red?

Answers

Answer:

A lot of Dietary Fiber.

Explanation:

Answer:

Red apples get their color from anthocyanins. These are pigments, or natural colorings, that develop as the apple grows. ... It absorbs all the colors of the rainbow—except for red. The red light reflects off the apple and our brain and eyes work together to let us know what color we are seeing.

Why would it be incorrect to say that the bulb supplies 60 J of light energy energy each second

Answers

Answer:

Explanation:

A 60W bulb , consumes electrical energy of 60 J per second but it does not give out all the energy in the form of light . Most of the energy consumed by it is wasted in the form of heat . Only a fraction of energy is converted into light energy .

Hence, it is wrong to say that bulb supplies 60 J of light energy each second .

Jennifer and katie stand and lean on each other. Jennifer weighs 150 pounds and katie weighs 120 pounds.

Answers

Answer:

Jennifer

Explanation:

she has more mass which means she is using more force

What effect does noise have on different types of signals?
A. It distorts digital signals, making them unreliable.
B. It distorts analog signals, making them unreliable.
C. Noise has no effect on either analog or digital signals.
D. Noise prevents the transmission of both analog and digital
signals.

Answers

Answer: it is actually B. :)

Explanation:

Noise can distort analog signals making them unreliable.

What is noise?The random or unwanted signal that mixes up with the original signal is called noise. Noise is an unwanted signal that interferes with the original message signal and causes the message signal's parameters to be corrupted. The message is transformed as a result of this change in the communication process. It's most likely to be inputted at the receiver or channel.

Noise can actually bury, distort or cause interference to the analog signal carrying the intelligent information.

What is analog signal?A signal in which a characteristic grows and decreases in lockstep with the object being sent is known as analog signal. The power of the radio wave, for example, rises and falls in accordance with the loudness of the original sound in AM radio.

Hence, the correct answer is B.

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A force of 90N is applied to each cart below, which one will accelerate the fastest?

Mass: 5 kg
Mass: 6 kg
mass: 8 kg
Mass: 9 kg

Answers

Answer:

5kg

Explanation:

The cart with the least amount of mass will result in the fastest acceleration.

The cart with the fastest acceleration is 5 kg cart because its mass is the smallest.

The given parameters;

applied force, F = 90 Nmass of cart: 5kg, 6kg, 8 kg, 9 kg

According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F = ma

The acceleration of the 5 kg cart is calculated as follows;

[tex]a = \frac{F}{m} \\\\a = \frac{90}{5} = 18 \ m/s^2[/tex]

The acceleration of the 6 kg cart is calculated as follows;

[tex]a = \frac{F}{m} \\\\a = \frac{90}{6} = 15 \ m/s^2[/tex]

The acceleration of the 8 kg cart is calculated as follows;

[tex]a = \frac{F}{m} \\\\a = \frac{90}{8} = 11.25 \ m/s^2[/tex]

The acceleration of the 9 kg cart is calculated as follows;

[tex]a = \frac{F}{m} \\\\a = \frac{90}{9} = 10 \ m/s^2[/tex]

Thus, the cart with the fastest acceleration is 5 kg cart because its mass is the smallest.

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An object with mass 'm' is moving in a circle of radius 'R' at a constant speed of 'v.' The acceleration of the object will INCREASE if _____. List all that apply ... .

Answers

Answer:

Explanation:

The acceleration of an object is given by the formula

a = v²/r

The acceleration of the object is bound to increase, if and only if the following are changed as well.

The mass of the object is increased,

The speed of the object is increased,

The radius of the object is contrarily decreased

Taking another look at the formula, we see that if we increase the speed of the object, it increases the acceleration. And since the radius is in the denominator, it has to be reduced for the acceleration to increase

a chuck wagon with an initial velocity of 4 m/s and a mass of 35 kg gets a push with 350 joules of force. what is the wagon's final velocity?

Answers

Answer:

the final velocity of the wagon is 6 m/s.

Explanation:

Given;

initial velocity of the wagon, u = 4 m/s

mass of the wagon, m = 35 kg

energy applied to the wagon, E = 350 J

The final velocity of the wagon is calculated as;

E = ¹/₂m(v² - u²)

[tex]m(v^2-u^2) = 2E\\\\v^2-u^2 = \frac{2E}{m} \\\\v^2 = \frac{2E}{m} + u^2\\\\v = \sqrt{\frac{2E}{m} + u^2} \\\\v = \sqrt{\frac{2(350)}{35} + (4)^2}\\\\v = 6 \ m/s[/tex]

Therefore, the final velocity of the wagon is 6 m/s.

The wagon's final velocity will be "6 m/s".

Given:

Wagon's initial velocity,

u = 4 m/s

Mass,

m = 35 kg

Applied energy,

E = 350 J

We know,

→ [tex]E = \frac{1}{2} m(v^2-u^2)[/tex]

→ [tex]m(v^2-u^2) = 2E[/tex]

or,

→      [tex]v^2-u^2 = \frac{2E}{m}[/tex]

→               [tex]v= \sqrt{\frac{2E}{m} +u^2}[/tex]

By substituting the values,

                    [tex]= \sqrt{\frac{2(350)}{35}+(4)^2 }[/tex]

                    [tex]= 6 m/s[/tex]

Thus the answer above is correct.  

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Are the divisions of the electromagnetic spectrum distinct? Explain your answer

Answers

Answer:

No

Explanation:

Are the divisions of the electromagnetic spectrum distinct?

The answer is NO.

To explain my answer, there are some points to be noted

1.) There are no clear divisions between the different ranges or bands in the electromagnetic spectrum. The divisions are somewhat arbitrary

2.) The naming of subdivisions is also arbitrary. For instance, microwaves are sometimes regarded as a subdivision of radio waves

3.) The ranges of x-ray and gamma ray overlaps

Using the rules for significant figures, what do you get when you multiply 67.6 by 1.2?

Answers

Answer:

81

Explanation:

The problem here is to use the rules for significant figures in the multiplication below.

       67.6 x 1.2:

 This product will yield an answer that will produce the least number of significant figures.

   67.6 has 3 significant figures; 6, 7 and 6

    1.2 has 2 significant figures; 1 and 2

The product must give us an answer of two significant figures:

        67.6 x 1.2  = 81.12 to 2significant figures gives 81

The solution to this problem is 81

The purpose of a cell phone cover is to protect your phone from impact forces. How does a cell phone case do this?

Answers

Answer:

the material of the phone case

The purpose of a cell phone cover is to protect your phone from impact forces. It is done by absorbing the impact of force by back cover.

What is Force ?

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s².

The case is made in such a way that, if the cell phone is dropped, the cover will absorb the kinetic energy of the falling phone by the means of deforming without transferring the impact onto the phone.

Cell phone cover is made up of rubber which can restore the forces like a spring. when u apply force to the rubber it get displaced and applied force is stored in the rubber. when cell phone drops, rubber of the cover absorbs the energy of impact. it also provides shied protection to the phone.

Hence this is how cell phone case do this.

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