Which soil horizon is located closest to the earth's crust? O horizon A horizon B horizon C horizon

Answers

Answer 1

Answer: The C horizon because it lays on the hard bedrock of the earths crust.

Answer 2

Answer: The soil horizon located closest to the surface of the earth's crust would be the O Horizon, which consists of organic deposits (hence the O) and composting plant structures.
Hope that helped =)

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Which of the following is true of salt lakes
What is the mass of a block of ice that weighs 520 Newtons on earth? A. 26 kg B. 5100 kg C. 53 kg D. 9.8 kg
The power expended when a 10 N barbell is raised 2. 0 m in 2s is
TRUE OR FALSE : Boyle’s law states that, as the pressure of a gas increases, the volume decreases.
The Sun's energy reaches the earth by _____. conduction convection radiation fusion

The energy for the water cycle comes from the Sun true or false?

Answers

Answer: True

Explanation:

Water cycle can be define as the hydrological cycle, in which the constant movement of water in it's various forms takes place among different spheres of the earth.

The main energy source for water cycle comes from the heat energy from the sunlight. The sunlight warms up the water in the water body on a large scale which leads to the evaporation of water. The evaporated water accumulates in the atmosphere the condensation of which leads to the precipitation in the form of rain, snow or hails. This way water comes back to the biosphere and hydrosphere.

On the basis of the above explanation, the statement, The energy for the water cycle comes from the Sun is true.

True. The energy for the water cycle does come from the Sun.

A force is applied to a 30-kg object, resulting in an acceleration of 15 m/s. What is the force being applied to the object?

Answers

The sum of all forces applied to the object = (mass) x (acceleration)

The sum of all forces applied to the object = (30) x (15)

= 450 newtons, in the direction of the acceleration.

From Second Newton's Law:

F=a*m
a= $15 (m)/( s^(2) )$
m=30kg

F= $15 (m)/( s^(2) )$ *30kg=450N

Sa se calculeze caldura degajata de un fier de calcat dace este alimentat la 220v si este parcurs de un curent electric de 100 a. Se stie ca acesta functioneaza 25 de min

Answers

Answer

33,000,000 joules or 33MJ

Explanation:

The formula for calculating the heat released by a substance is expressed as shown below;

where;

Q is the amount of heat released

p is the power expended

t is the time it takes

$Since P = current * voltage\nP = IV$

Then;

$Q = IVt$

Given the current I = 100A, supply voltage V = 220V and required time t = 25mins

t = 25 * 60 = 1500 seconds

Substituting these values in the formula that we have;

$Q = 100 * 220 * 1500\nQ = 22000*1500\nQ = 33,000,000Joules\ or\ 33MJ$

Which type of mountain is created when rock layers are pushed up by forces inside the Earth?

Answers

Upwarped mountain is created when rock layers are pushed up by forces inside the Earth.

Which statement describes a characteristiccommon to all electromagnetic waves and
mechanical waves?
(1) Both types of waves travel at the same speed.
(2) Both types of waves require a material medium
for propagation.
(3) Both types of waves propagate in a vacuum.
(4) Both types of waves transfer energy.

Answers

"(4) Both types of waves transfer energy." is the best option from the list regarding the characteristics common to all electromagnetic waves and mechanical waves

Answer: The correct answer is (4).

Explanation:

Electromagnetic wave is the transverse wave. It is produced by the moving charged particle. It travels at the speed of the light. It does not require a medium to travel. It can travel through the vacuum.

In mechanical wave, there is an oscillation of matter. It requires a medium to travel.It cannot travel through vacuum. The three types of mechanical waves are longitudinal wave, transverse wave and surface wave.

The common characteristics to all electromagnetic waves and mechanical waves are both can move through matter and both can occur as a result of a disturbance. This disturbance is a result of wave transfer energy.

Therefore, the common characteristic to all electromagnetic and mechanical waves is both types of waves transfer energy.

Which of these is an illuminated source of light? A. the sun B. a star C. the earth seen from the moon D. a meteorite as it burns up in the atmosphere ***ooh i don't know this one at all! thank you!!

Answers

C. the earth seen from the moon . The others are luminous objects

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The speed of light is closest to 300,000