Which of these is most likely a step in the formation of soil? a. erosion of soil b. crystallization of rocks c. animals digging rocks d. solidification of organic matter

Answers

Answer 1

C. Measure the soil's volume and then the volume of water that the soil can absorb.

Answer 2

It's B! I already took the test

Related Questions

The grid in a triode is kept negatively charged to prevent… A. the variations in voltage from getting too large. B. the electrons from being attracted to the grid instead of the anode. C. electrons being repelled back to the cathode. D. electrons from escaping from the tube containing the triode.

Answers

Hello
The answer is b
Have a nice day

Answer:

B. the electrons from being attracted to the grid instead of the anode.

Explanation:

just because it is

If planet i is 30.3 million miles farther from the sun than planet ii, then planet iii is 24.6 million miles farther from the sun than planet i. when the total of the distances for these three planets from the sun is 196.2 million miles, how far away from the sun is planet ii?

Answers

Since the total distance for all three of the planets is 196.2 million miles, you would add planet i and planet iii, then subtract that number from 196.2

planet i and planet iii equaled 54.9 million miles, that subtracted from 196.2 equals 141.3

So your answer is 141.3 million miles

What is the most power in watts the ear can receive before the listener feels pain?

Answers

Final answer:

The human ear starts to feel pain at sound intensities of 1 W/m². There is a broad range of sound intensities that can be heard without pain, but anything at or above the pain threshold may cause immediate hearing damage.

Explanation:

The amount of power in watts that the ear can receive before a listener feels pain is at an intensity of 1 W/m². The human ear is very sensitive and can detect sounds with a minimum threshold of 10−12 W/m² (0 dB). However, exposure to intensities at or above 1 W/m² can be painful. For example, sounds that are much higher in intensity than this level can be unbearable and potentially harmful, potentially leading to immediate damage. It is essential to protect one's hearing with measures such as using earplugs or ear muffs, especially when exposed to sounds of high decibel levels.

if a toaster produces 8 ohms of resistance in a 120 v circuit, what is the amount of current in the circuit

Answers

voltage (v) = current (i) × resistance (r)
i = v/r = 120/4 = 30 amps

What would happen to the earth if it orbited further away from the sun than it does now?

Answers

the rotational analysis will change
the climatic conditions will change

What besides mass and gravity , what other factor affects gravitational potential energy?

Answers

The distance or space separating the 2 objects also greatly affects the gravitational potential or force experienced on one object on the other.

This can be seen as per the equation for gravitational forces.

The change in __________ is the amount of energy in a system that is available to do work.

Answers

The answer is free energy.
In fact, in thermodynamics, the free energy of a system is defined as the energy that can be converted to do work. Helmholtz definition of free energy, for instance, is:
[tex]A=U-TS[/tex]
where U is the internal energy, T the temperature and S is the entropy

Which of these is most likely a step in the formation of soil? a. erosion of soil b. crystallization of rocks c. animals digging rocks d. solidification of organic matter

Answers

The answer is C. animals digging rocks

If a car increases its speed from 20 mph to 60 mph, by what factor does the kinetic energy of the car increase

Answers

If a car increases its speed from 20 mph to 60 mph, then the kinetic energy of the car increases by a factor of 9.

What is Kinetic energy?

Kinetic energy is the energy which is present in the object which is under motion. Kinetic energy is a vector quantity due to the presence of both the magnitude and direction. The SI unit of kinetic energy is Joule.

KE = 1/2 × m × v²

where, KE = Kinetic energy,

m = mass of the object,

v = velocity of the object

KE₁ = 1/2m(20)²

KE₂ = 1/2m(60)²

Therefore, the factor by which the kinetic energy of the car can be increased can be calculated by taking ratio of the kinetic energy:

KE₁/ KE₂ = 1/2m(20)² / 1/2m(60)²

KE₁/ KE₂ = 400/ 3600

KE₁/ KE₂ = 1/9

Therefore, the factor by which the kinetic energy of car has been increased by 9.

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a refrigerator has a power of 90w and is left on for 24 hours. A hair dryer has a power 900w and is on for 20 minutes. which statement correctly compares the energy used by these devices?

Answers

The refrigerator uses 7,776,000 J of energy, while the hair dryer uses 1,080,000 J. The correct comparison is C. the refrigerator uses 6,696,000 J more energy than the hair dryer.

To compare the energy used by the refrigerator and the hair dryer, we need to calculate the energy consumption for each device in joules (J).

Step-by-Step Calculation:

Refrigerator:

Power = 90 W

Time = 24 hours = 24 × 60 × 60 seconds = 86,400 seconds

Energy used = Power × Time = 90 W × 86,400 s = 7,776,000 J

Hair Dryer:

Power = 900 W

Time = 20 minutes = 20 × 60 seconds = 1,200 seconds

Energy used = Power × Time = 900 W × 1,200 s = 1,080,000 J

Now, we compare the two energies:

Energy used by the refrigerator = 7,776,000 J

Energy used by the hair dryer = 1,080,000 J

Difference in Energy Usage:

Difference = 7,776,000 J - 1,080,000 J

Difference = 6,696,000 J

Therefore, the correct statement is:

C. The refrigerator uses 6,696,000 J more than the hair dryer.

complete question:

a refrigerator has a power of 90w and is left on for 24 hours. A hair dryer has a power 900w and is on for 20 minutes. which statement correctly compares the energy used by these devices?

A. The refrigerator uses 1,080,000 J less than the hair dryer.

B. The refrigerator uses 3,224,000 J less than the hair dryer.

C. The refrigerator uses 6,696,000 J more than the hair dryer.

D. The refrigerator uses 7,776,000 J more than the hair dryer.

Which of the following processes add methane (CH4) to the atmosphere?
A.Breakdown of plant and animal remains in the soil.
B. Leakage from natural gas pipelines.
C. Food digestion by land animals.
D.All of the above.

Answers

Answer: D.All of the above.

Methane is a colourless odourless gas that develops abundantly in nature.

A.Breakdown of plant and animal remains in the soil: The plant and animal remains contains large amount of organic matter, which is decomposed by soil bacteria. This process results in formation of methane gas. The process takes place in the absence of oxygen, hence, called as anaerobic decomposition. This gas gets liberated to the external environment.

B. Leakage from natural gas pipelines: The natural gas is obtained as a fossil fuel from deep layers of the earth. This gas is excavated in order to use it as fuel to run vehicles and for cooking food. The gas may liberate to the external environment by leakage.

C. Food digestion by land animals: The land animals such as cow and buffalo discharge dung, which is a rich source of methane. The methane gets liberated from the cow dung to the external environment.

Therefore, all processes are responsible for liberation of methane to the external environment.

All of the above the following processes add methane (CH₄) to the atmosphere.All the options are correct.Hence D is the correct option.

What is methane?

Methane is a colorless, odorless gas that occurs naturally in large quantities.

A.Soil bacteria digest plant and animal remnants: Plant and animal remains include a huge quantity of organic materials, which soil bacteria degrade.

Methane gas is produced as a result of this process. Anaerobic decomposition is a type of breakdown that occurs in the absence of oxygen. This gas is then released into the atmosphere.

B. Natural gas pipeline leakage: Natural gas is a fossil fuel that is extracted from deep layers of the earth.

This gas is mined in order to use it as a source of energy for cars and cooking. Leakage might allow the gas to escape into the environment.

C. Food digestion in land animals: Land animals digest food in a variety of ways.

Hence option D is correct.

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It takes 5.0 seconds for a wave with a wavelength of 2.5 m to travel past your location. What’s the period of the wave. What is the frequency of the wave and what’s the speed of the wave

Answers

(a) Period of the wave
The period of a wave is the time needed for a complete cycle of the wave to pass through a certain point.
So, if an entire cycle of the wave passes through the given location in 5.0 seconds, this means that the period is equal to 5.0 s: T=5.0 s.

(b) Frequency of the wave
The frequency of a wave is defined as
[tex]f= \frac{1}{T} [/tex]
since in our problem the period is [tex]T=5.0 s[/tex], the frequency is
[tex]f= \frac{1}{5.0 s}=0.2 Hz [/tex]

(c) Speed of the wave
The speed of a wave is given by the following relationship between frequency f and wavelength [tex]\lambda[/tex]:
[tex]v=f \lambda = (0.2 Hz)(2.5 m)=0.5 m/s[/tex]

If the radius of earth decreased, with no change in mass, what would happen to your weight

Answers

If the radius of earth decreased it's radius, with no change in mass, nothing would happen to your weight, though you would be much lighter, due to lack of gravity.

the reason the gravity on the moon is so much less then the gravity on earth, is because the moon is so much smaller then earth.
The smaller the planet, the less the gravity, the bigger the planet, the heavier you are, due to gravity, not due to your personal weight.

Answer:

weight would increase

Explanation:

The rope will snap if the tension in it exceeds 55.0 n. what is the maximum value of the force f which can be applied?

Answers

Missing part of the text:
"Two masses, m1 = 2.12 kg and m2 = 9.01 kg are on a horizontal frictionless surface and they are connected together with a rope as shown in the figure."
and missing figure (see attachment)

Solution:
We can write Newton's second law for the whole system m1-m2 and for m2 only (2 equations). Only one force (F) acts on the m1-m2 system, while if we consider m2 only we have two forces acting on it: F and T (tension), in the opposite direction. So, the two equations are
[tex]F=(m_1+m_2)a[/tex]
[tex]m_2 a=F-T[/tex]
where a is the acceleration of the system.

From the first equation we get
[tex]a= \frac{F}{m_1+m_2} [/tex]
and substituting it inside the second equation, we get
[tex] \frac{m_2}{m_1+m_2}F=F-T [/tex]
re-arranging, we get
[tex]F=T( \frac{m_1+m_2}{m_1} )[/tex]

Using [tex]m_1=2.12 Kg[/tex], [tex]m_2=9.01 Kg[/tex], and using the maximum value of T that is allowed not to break the rope (T=55 N), we can find the maximum allowed value for F:
[tex]F=288.8 N[/tex]

What are two ways you can increase the magnetic field of an electromagnetic?

Answers

1). Wind more turns of wire in the coil around the core.

2). Increase the electrical current flowing in the wire.
(You can do that by using a battery or power supply with a little more voltage.)

3). If the core of the electromagnet is anything else but pure iron,
take it out, throw it away, and replace it with a core of pure iron.

Final answer:

To increase an electromagnet's magnetic field, add more turns to the coil and increase the current flowing through it. Inserting a ferromagnetic core can also enhance magnetic field strength, but limitations exist due to coil resistance and the properties of superconducting materials.

Explanation:

To increase the magnetic field of an electromagnet, you can perform the following modifications:

Increase the number of turns in the coil: Adding more turns to the solenoid will enhance the magnetic field as it is directly proportional to the number of turns in the wire.Increase the current: By increasing the electrical current flowing through the coil, the magnetic field will also increase due to the direct relationship between current and magnetic field strength.

Another method often used to enhance the strength of an electromagnet is by inserting a ferromagnetic material, such as iron, within the coil, which acts as a core to concentrate the magnetic field.

However, it is important to note that there are limits to the strength of the magnetic field that can be created. Exceeding certain thresholds can lead to an overheating problem due to coil resistance, or can destroy the superconducting properties if superconducting materials are used.

Identify the temperature that is equivalent to 95°F. Use this formula to convert the temperature

Answers

The answer is 35 degrees Celsius. Hope I helped :) Please vote brainliest.

The temperature that is equivalent to 95°F - 35° C

We can convert from Fahrenheit to Celsius using the formula:

=> [tex]C = \frac{5}{9} (f - 32)[/tex]

Celsius to Fahrenheit using the formula:

=> [tex]F= \frac{9}{5} C + 32[/tex]

where

f = represents degrees Fahrenheit and

c = represents degrees Celsius.

In our case,

f = 95 and we want to find c then,

[tex]C = \frac{5}{9} (f - 32)[/tex]

[tex]C = \frac{5}{9} (95- 32)\\C = \frac{5}{9} (63)\\C = 7*5\\C = 35[/tex]

Thus, the correct answer is - 35° C

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__________ constancy refers to the ability to understand that an object retains the same form even when viewed from a different angle.

A. Structural
B. Shape
C. Brightness
D. Color

Answers

Answer:

The answer is Shape

Explanation:

Shape Constancy is the tendency to perceive an object as having the same shape regardless of its orientation or the angle from which we view it. It is a term of Psychology. For example, the image of a dinner plate is elliptical, not circular, unless its surface is exactly at a right angle to our line of sight. But in the absence of all depth information, it is not possible to judge the true shape of any object.

Answer:

B. Shape

Explanation:

A sprinter set a high school record in track and field, running 200.0 m in 20.6 s . what is the average speed of the sprinter in kilometers per hour?

Answers

Answer : The average speed of the sprinter is, 34.95 Km/hr

Solution :

Average velocity : It is defined as the distance traveled by the time taken.

Formula used for average velocity :

[tex]v_{av}=\frac{d}{t}[/tex]

where,

[tex]v_{av}[/tex] = average velocity

d = distance traveled = 200 m

t = time taken = 20.6 s

Now put all the given values in the above formula, we get the average velocity of the sprinter.

[tex]v_{av}=\frac{200m}{20.6s}\times \frac{3600}{1000}=34.95Km/hr[/tex]

conversion :

(1 Km = 1000m)

(1 hr = 3600 s)

Therefore, the average speed of the sprinter is, 34.95 Km/hr

The average speed of the sprinter in kilometers per hour is about 35.0 km/h

Further explanation

Acceleration is rate of change of velocity.

[tex]\large {\boxed {a = \frac{v - u}{t} } }[/tex]

[tex]\large {\boxed {d = \frac{v + u}{2}~t } }[/tex]

a = acceleration ( m/s² )

v = final velocity ( m/s )

u = initial velocity ( m/s )

t = time taken ( s )

d = distance ( m )

Let us now tackle the problem !

This problem is about Kinematics.

We will solve it in the following way

Given:

distance traveled = d = 200.0 m

time taken = t = 20.6 s

Unknown:

average speed = v = ?

Solution:

[tex]v = \frac{d}{t}[/tex]

[tex]v = \frac{200}{20.6}[/tex]

[tex]v = \frac{1000}{103} ~ m/s[/tex]

Next we will change the units of this speed into km/h.

[tex]v = \frac{1000}{103} \times \frac{3600}{1000} ~ km/h[/tex]

[tex]v = \frac{3600}{103}~ km/h[/tex]

[tex]v \approx 35.0 ~ km/h[/tex]

Learn moreVelocity of Runner : https://brainly.com/question/3813437Kinetic Energy : https://brainly.com/question/692781Acceleration : https://brainly.com/question/2283922The Speed of Car : https://brainly.com/question/568302

Answer details

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Speed , Time , Rate

Julio hit a baseball. What caused the ball to change direction at the time of impact?
a.the force of gravity
b.the speed of the ball
c.the force of his swing
d.the weight of the air

Answers

The answer is c. the force of his swing

At the time of the impact, there is a collision between two bodies moving in opposite directions.

The force exerted on the ball causes the change of velocity.

Answer: The force of his swing

Explanation: When Julio hit the baseball, the ball changed the direction after the impact. The contact force exerted by the bat on the baseball when it swing caused the change in direction of the ball. The force exerted in time t is causes change in momentum.

the force of gravity acts on the ball all the time. The speed of the ball is not a factor to change direction. The weight of the air exerts a drag on the ball which is also constant. Hence, only the force of swing caused the changed in the direction of the ball.

What can cause the sea level to fall? ocean basins getting smaller or water being removed from the hydrological cycle ocean basins getting larger or water being removed from the hydrological cycle ocean basins getting larger or water returning to the hydrological cycle ocean basins getting smaller or water returning to the hydrological cycle

Answers

The correct answer is
a) ocean basins getting smaller or water being removed from the hydrological cycle.
When ocean basins get smaller, there is less water in the oceans, and so the sea level falls down. Similarly, if water is removed from the hydrological cycle, there is less water going back to the oceans via precipitations (or coming from the land), therefore the sea level decreases.

ANSWER
ocean basins getting smaller or water being removed from the hydrological cycle

Which type of foot PPE must you wear if electrical shock is ever a possibility with your job?

Answers

The appropriate PPE(personal protective equipment) to be worn for foot protection against electric shock is boots retrofitted with rubber soles. Rubber does not conduct electricity and so will safeguard against electric shocks.

Other personal protective equipment used in a lab or industry can include safety glasses, rubber gloves, protective clothing and masks and respirators. PPE goes hand in hand with personal behaviour, personal grooming and housekeeping.

When vehicles meet on a steep, narrow road, not wide enough for two vehicles, which vehicle must yield the right-of-way?
A. The vehicle going uphill
B. The vehicle going downhill
C. The vehicle going slower

Answers

When vehicles meet on a steep, narrow road which isnot wide enough for two vehicles, the vehicle going downhill must yield the right-of-way by backing up to a wider place or by stopping to leave sufficient space for the vehicle going uphill, except where it is more practical for the vehicle going uphill

Answer: B. The vehicle going downhill

Explanation: The vehicle going huphill needs more force to move, while the vehicle moving downhill actually can be moved only by the gravity acceleration.

So when both cars meet, if the car going uphill loses momentum, the vehicle may not be capable to keep moving uphill after that, so is better that the car going downhill yields the right-of-way to the other car, that needs to preserve the momentum.

You have an electromagnet that is not quite strong enough. What are three changed you could make to increase the strength

Answers

... wind more turns of wire around the core;

... run more electric current through the wire (use a battery or power supply with more voltage)

... whatever is in the core of the electromagnet, replace it with something that's closer to pure iron.

Two identical balls are thrown vertically upward. the second ball is thrown with an initial speed that is twice that of the first ball. how does the maximum height of the two balls compare? two identical balls are thrown vertically upward. the second ball is thrown with an initial speed that is twice that of the first ball. how does the maximum height of the two balls compare? the maximum height of the second ball is two times that of the first ball. the maximum heights of the two balls are equal. the maximum height of the second ball is four times that of the first ball. the maximum height of the second ball is 1.41 times that of the first ball. the maximum height of the second ball is eight times that of the first ball.

Answers

The motion of the ball on the vertical axis is an accelerated motion, with acceleration
[tex]a=g=-9.81 m/s^2[/tex]
The following relationship holds for an uniformly accelerated motion:
[tex]2aS=v_f^2 - v_i^2[/tex]
where S is the distance covered, vf the final velocity and vi the initial velocity.

If we take the moment the ball reaches the maximum height (let's call this height h), then at this point of the motion the vertical velocity is zero:
[tex]v_f =0[/tex]
So we can rewrite the equation as
[tex]2(-9.81 m/s^2) h=-v_i^2[/tex]
from which we can isolate h
[tex]h= \frac{v_i^2}{19.62} [/tex] (1)

Now let's assume that [tex]v_i[/tex] is the initial velocity of the first ball. The second ball has an initial velocity that is twice the one of the first ball: [tex]2v_i[/tex]. So the maximum height of the second ball is
[tex]h= \frac{(2v_i)^2}{19.62}= \frac{4v_i^2}{19.62} [/tex] (2)

Which is 4 times the height we found in (1). Therefore, the maximum height of ball 2 is 4 times the maximum height of ball 1.

Match the situation with the energy transformation ITEMBANK: Move to Top A boy shooting a rubber band across the classroom A child going down a slide on a playground Rubbing your hands together to warm them on a cold day Turning on a battery operated light Using a dc electric motor Using a gas power heater to warm a room Using a hand crank generator to produce electric current Using the light in your room that is plugged into the wall Chemical potential energy transformed into radiant energy Gravitational potential energy transformed into kinetic energy Elastic potential energy transformed into kinetic energy Chemical potential energy transformed into thermal energy Electrical energy transformed into radiant energy Kinetic energy being transformed into thermal energy Electrical energy transformed into kinetic energy

Answers

A boy shooting a rubber band across the classroom -->
Elastic potential energy transformed into kinetic energy
The initial energy is the energy stored in the muscles of the boy's arm, which is elastic potential energy. This is converted into motion of the rubber, therefore kinetic energy

A child going down a slide on a playground --> Gravitational potential energy transformed into kinetic energy
On top of the slide, all the energy of the child is gravitational potential energy due to its height with respect to the ground (E=mgh). when it moves down the slide, this is converted into kinetic energy, because the child acquires a speed v (E=1/2 mv^2)

Rubbing your hands together to warm them on a cold day --> Kinetic energy being transformed into thermal energy
When rubbing hands, we are moving them (kinetic energy), and this energy raises the temperature of the hand's surface (thermal energy)

Turning on a battery operated light -->
Chemical potential energy transformed into radiant energy
A battery works by mean of chemical reactions (chemical potential energy), producing light (so, emitting energy by radiation, i.e. radiant energy)

Using a dc electric motor --> Electrical energy transformed into kinetic energy
A dc electric motor works using currents (so, electrical energy), and the energy produced can be used for example to accelerate a car (kinetic energy)

Using a gas power heater to warm a room --> Chemical potential energy transformed into thermal energy
A gas power heater burns gases (so, chemical reaction, i.e. chemical potential energy) to raise the temperature of the room (thermal energy)

Using a hand crank generator to produce electric current --> Kinetic energy transformed into electrical energy
In a hand-crank generator, the handle is being rotated (kinetic energy) in order to produce an electric current (electrical energy)

Using the light in your room that is plugged into the wall --> Electrical energy transformed into radiant energy
The lamp works by using electrical current flowing into a resistor (electrical energy) and it produces light, so it emits energy by electromagnetic radiation (radiant energy)

Describe the energy transformations that occur from the time a skydiver jumps out of a plane until landing on the ground.

Answers

I think, the skydiver has maximum potential energy before jumping. However, as the skydiver jumps and decreases in height, he increases the velocity. Thus, as soon as the skydiver has jumped he is experiencing kinetic energy. The velocity of the skydiver increases as he moves down wards due to gravitational acceleration until he attains terminal velocity.

Sample Response: Before jumping from the plane, the skydiver has potential energy. When the skydiver jumps, the potential energy is transformed into kinetic energy, which increases until the skydiver reaches terminal velocity. Potential energy is then transformed into thermal energy.

The atmospheric temperature decreases when snow starts melting because the snow------------------------- from the atmosphere to melt.
A. releases thermal energy
B. absorbs thermal energy
C. releases temperature
D. absorbs temperature

Answers

It absorbs thermal energy therefore melting the snow

B because you know snow is cold but when our atmosphere gets hotter the snow absorbs the heat which causes it to melt

For the lever shown, a = 5 m and b = 2 m. What is the mechanical advantage of the lever?

Answers

mechanical advantage of the lever is 2.5

your answer would be 2.5

Which of the following would be more likely to utilize capitalism-based land management methods?
a.
city planners
b.
federal regulators
c.
corporate directors
d.
all of the above

Answers

the correct answer is c. corporate directors I just took the test and federal regulators was wrong.

If a negatively charged particle moves into a magnetic field traveling in a straight line, how would you expect its motion to change? A) The particle would slow and stop moving. B) The particle would travel in a curved path. C) The particle would continue traveling in a straight line. D) The particle would make a right angle turn and then continue traveling in a straight line.

Answers

hello
the answer is a

Answer:

B) The particle would travel in a curved path.

Explanation:

I just took the test and this is the correct answer

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