mars may have been more earth-like in the past because

The tail shape of a surfboard greatly affected the board's interaction with the wave's face and the flowing of water flowing.

The tail shape of a surfboard affects how the board depends on the wave's face, and the water flowing between it. More comprehensive, thicker tail shapes have more surface area and assist the board to float and create lift - allowing the surfboard to plane over the surface of the water more efficiently.

The shape of both the surfboard and its fin swap the way the water moves around it if you can grab a wave as well as the turning ability of the surfboard.

So we can conclude that Surfboard bottom outlines are also essential. Concave and V-shaped contours have similar performances, for all opposite designs.

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Answer:

The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.

Answer:

Anything that has motion cannot be stopped

Explanation:

Answer:

equal and opposite reaction

Explanation:

The formula for calculating density is expressed as

Density = mass/volume

From the information given,

mass of empty pycnometer = 10.2

mass of the same pycnometer with an unknown liquid is 21.8.

Mass of unkown liquid = 21.8 - 10.2 = 11.6

volume of unknown liquid = 7

Thus,

Density = 11.6/7

Density = 1.7 g/ml

The resultant displacement of  Matsushima is 330.72 miles.

The resultant displacement of an object is the change in the position of the object. It can also be described as the shortest path connecting the initial position and final position of an object.

The resultant displacement of  Matsushima is calculated by applying parallelogram law of vector addition as shown below.

d² = a² + b² - 2ab cos(θ)

where;

Substitute the given parameters and solve for the resultant displacement of  Matsushima as shown below.

d² = (250)² + (125)² - 2(250 x 125) cos(120)

d² = 109,375

d = √109,375

d = 330.72 mi

Thus, the resultant displacement of Matsushima depends on the initial position, final position and angle between the two position as shown in the parallelogram law of vector additions.

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Answer:

The new volume of the balloon is 8.8 L

Explanation:

Charles's Law consists of the relationship between the volume and the temperature of a certain amount of ideal gas, which is kept at a constant pressure. This law establishes that the volume is directly proportional to the temperature of the gas, that is to say that if the temperature increases, the volume of the gas increases and that on the contrary if the temperature of the gas decreases, the volume decreases.

In other words, Charles's law states that when the amount of gas and pressure are kept constant, the ratio between the volume and the temperature will always have the same value:

\(\frac{V}{T}=k\)

Having a certain volume of gas V1 that is at a temperature T1, by varying the volume of gas to a new value V2, then the temperature will change to T2, and it will be fulfilled:

\(\frac{V1}{T1}=\frac{V2}{T2}\)

In this case:

Replacing:

\(\frac{8.5 L}{294 K}=\frac{V2}{305 K}\)

Solving:

\(V2=305 K*\frac{8.5 L}{294 K}\)

V2=8.8 L

The new volume of the balloon is 8.8 L

The Answer is B because primary consumers need to get their food from plants.

Answer:

The Answer is B because primary consumers need to get their food from plants

Explanation:

Johnny needs not to be worried because blood contains buffering agents which resist changes in pH.

Blood is defined as the fluid of the circulatory system that is made of various cells and plasma the travels through the body in veins and arteries. The cells found in the blood include the following:

At the normal healthy state of an individual, the pH of the blood is kept constant at 7.35 to 7.45. This is because, the buffering agents found in the blood such as carbonic acid and bicarbonate anion helps in the maintenance of the blood pH.

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The sun's thermal energy serves as the primary energy source for producing atp during the photosynthesis process. Essentially, it serves as the primary catalyst for all metabolic processes in plants. Protons diffusing through the F0 section of ATP synthase

All living things contain the energy-carrying molecule adenosine triphosphate (ATP) in their cells. When food molecules are broken down, chemical energy is released that is captured by ATP and used to power other cellular operations.

To drive metabolic events that would not happen naturally, to transfer necessary molecules across membranes, and to do mechanical labor, such as moving muscles, cells need chemical energy.

Chemical energy cannot be stored by ATP; lipids and carbohydrates such as glycogen serve this purpose. ATP is created when energy from storage molecules is required by the cell.

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From the calculation;

1) Melting point of indium = 171.4°

2) The resistance is 52.9 ohm

3) The power dissipated is  834 W

The temperature coefficient of resistance is a measure of how much the resistance of a material changes with temperature. It quantifies the relationship between the change in resistance and the change in temperature.

We have that;

R1/R2 = (1 + αt1)/(1 + αt2)

50/76.8 = (1 + (3.92 * \(10^-3\) * 20))/(1 +  (3.92 *\(10^-3\) * t))

0.65 = 1.0784/1 + 0.00392t

0.65(1 + 0.00392t) =  1.0784

0.65 + 0.0025t = 1.0784

t = 171.4°

P = \(V^2\)/R

R = \(V^2\)/P

R = \(230^2\)/1000

R = 52.9 ohm

The new power is;

P =\(210^2\)/52.9

P = 834 W

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Infrared radiation has longer wavelengths compared to visible radiation, and lower energy per photon.

Infrared radiation (IR) is a type of electromagnetic radiation that is not visible to the human eye. It has a longer wavelength and lower frequency than visible light, and it is part of the electromagnetic spectrum that also includes radio waves, microwaves, visible light, ultraviolet radiation, X-rays, and gamma rays.

Infrared radiation is often associated with thermal radiation, which is the emission of electromagnetic waves from objects that are at a temperature above absolute zero. This is because infrared radiation is often emitted by objects that are warm, and it is this type of infrared radiation that is responsible for our ability to feel heat.

Infrared radiation has a wide range of applications, including in remote sensing, thermal imaging, and heating. For example, in remote sensing, infrared radiation can be used to observe and study the Earth and other celestial objects, as well as to detect and monitor changes in temperature, vegetation, and other physical properties. In thermal imaging, infrared cameras are used to detect heat signatures and create images based on temperature differences. In heating, infrared heaters use infrared radiation to heat objects and materials directly, rather than heating the air around them.

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Answer:

chloroplast

Explanation:

Endosymbiosis theory explains the origin of chloroplast and mitochondria in the eukaryotic organisms.

When the pro-eukaryotes engulfed the blue-green algae or photosynthetic bacteria, these bacteria formed the symbiotic relationship with the pro-eukaryotes. These photosynthetic bacteria transformed into the chloroplast organelles of the eukaryotes which can capture the sunlight and use it in the synthesis of glucose molecules. These eukaryotic cells later formed the plant kingdom.

Answer:

The formula for speed is speed=distance

time

Explanation:

to work out what the units are for speed,you need to know the units for distance and time.In this example,distance is in metres(m) and time is in seconds (s) , so the units for speed is metre per second (m/s).

Answer:

Equilibrium is a state of consistency. An object under the influence of just one force cannot be equal. Only when there is no force at all, or when two or more forces meet zero, can the object have equilibrium.

Explanation:

To determine the direction of the current in the student question, you need to use the right-hand rule. Grab the wire with your right hand, with your thumb pointing in the direction of the current and your fingers curling around the wire.

Since the magnetic field is into the page on the left and out of the page on the right of the wire, your thumb should point in the direction of the current.

So, to complete the sentence: "To determine the direction of the current you need to grab the wire with your right hand of the wire.

Since the thumb now points in the direction of the current."

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First you get the data:

Time conversion: hours to seconds:

\(\bf{2\not{h}*\left(\dfrac{3600 \ seg}{1\not{h}}\right)=7200 \ seg }\)

We calculate the distance, using the formula:

                           \(\bf{d=t*v }\)

                           \(\bf{d=3600\not{seg}*3\frac{m}{\not{m}} }\)

                           \(\bf{d=21600 \ m}\)

Answer: I travel to 21600 meters.

Explanation:

The area between the speed-time graph f a body and time axis measures the distance travelled by the body

Answer:

William Cullen Bryant, Henry Wadsworth Longfellow, John Greenleaf Whittier, Oliver Wendell Holmes, and James Russell Lowell. These five men made up a group of poets known as the Fireside Poets or the Schoolroom Poets.They were hugely popular in the second half of the 19th century, like the pop stars of their time.

Explanation:

hope this helps if not let me know

Answer:

B

Explanation:

that is the only way you can sit

Answer:

twice as much work

Explanation:

Answer:

to dim lights, or to control speed in a engine

Explanation:

Answer:

300

Explanation:

i answered it and got it right

There are 4 potential models of how the expansion of the universe changes with time. The correct model description to fill in the blanks is as follows:

Since the beginning of the Big Bang, scientists believe the universe always expands. Every element of a galaxy slowly moves away from each other. There are 4 potential models for how the universe changes with time, which:

This question is incomplete. The complete query to this question is as follows:

Meanwhile, the blank sentences are as follows:

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We will determine the work as follows:

So:

So, the work done by the force of gravity is of 78.4 J.

Answer:

D is the correct answer

Explanation:

Ek=m*g*h=50*9.8*5=2450

The kinetic energy right before she hits the water is 2450J. So, the correct option is D.

Kinetic energy is defined as the energy that is due to the motion of an object. If we want to accelerate an object, we must apply a force, by applying a force we need to do work. After the work is done, energy has been transferred to the object, and the object will continue to move with a new constant speed.

A 50Kg girl jumps off a 5-meter-high diving board.

We need to find the kinetic energy of the girl before she enters the water which means that the kinetic energy becomes equal to the potential energy such that,

P.E.=K.E. = mgh

where, m=mass of the object

g= acceleration due to gravity \((9.8m/s^2)\)

h= height

So, K.E= 50* 9.8*5 = 2450 J

Thus, the kinetic energy right before she hits the water is 2450J. So, the correct option is D.

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