a wind blowing across the ocean will create a current in which direction? also not sure on the subject thing for this
Answer:
The water starts flowing in the same direction as the wind.
The chart above shows how a star's temperature relates to its color. Rigel is a blue star, Betelgeuse is a red star, and the Sun is a yellow star. How do the temperatures of these stars compare?
Answer:
The Sun is hotter than Betelgeuse and cooler than Rigel.
Explanation:
a small 24 kilogram canoe is floating downriver at a speed of 3 m/s.what is the canoe's kinetic energy .
{~please help fast ~}
That all depends who's measuring it.
... If one Physics student is standing on the riverbank, watching the canoe float by, he will measure the canoe's kinetic energy and say it's 108 Joules.
... If another Physics student is sitting on another boat, floating on the same river and watching the same canoe, she will say that the canoe has zero kinetic energy.
Both of them are correct.
Explanation :
Mass of the canoe, m = 24 kg
Speed of the canoe, v = 3 m/s
Kinetic energy is said to be possessed due to the motion of the object and it is given as :
[tex]E_k=\dfrac{1}{2}mv^2[/tex]
v is the velocity of the canoe.
[tex]E_k=\dfrac{1}{2}\times 24\ kg\times (3\ m/s)^2[/tex]
[tex]E_k=108\ J[/tex]
So, the kinetic energy of the canoe is 108 J
Hence, this is the required solution.
Why does green light slow down more than orange light does when passing through an object?
Answer:
Green light has smaller wavelength than that of orange light.
Explanation:
The wavelength of green light is 510 nm ,while that of orange light is 590 nm.
According to equation
v=f*λ
v∞λ
velocity or speed is directly proportional to wavelength,hence green slows more than orange light because wavelength of green light is smaller than that of orange light.
Which of the following statements is true? A. The Earth has evolved over time. B. The Earth's surface has not changed over time. C. The Earth is exactly the same as it was millions of years ago. D. The Earth's continents have not changed over time, but some islands have formed.
A. The Earth has evolved over time
how did napoleon raise soldiers for hi army
Waves transfer energy. What have you observed about light, sound, or water that could support this claim?
Light, sound, or water support the claim that waves transfer energy. The speed of light and sound is the same in some cases.
What is a wave?A wave is a phenomenon that flows across a material medium without leaving any lasting mark. Mechanical or electromagnetic waves can be used to classify them. Transverse and longitudinal are the two main forms.
Waves transfer energy by causing particles to vibrate, yet the particles themselves travel in a perpendicular direction to the wave's horizontal movement.
As the particles travel from rest to movement and back to rest, energy is changed between potential and kinetic energy.
Hence light, sound, or water support the claim that waves transfer energy.
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How does nitrogen from the air get into the bodies of plants and animals?
Nitrogen is fixed from the atmosphere into a usable form for plants by nitrogen-fixing bacteria, which convert N₂ into nitrates. Plants absorb these nitrates, which are then passed on to animals when they consume the plants. Soil bacteria play a key role in recycling nitrogen back into the atmosphere.
Explanation:Nitrogen Fixation and the Nitrogen CycleNitrogen from the air gets into the bodies of plants and animals primarily through a process called nitrogen fixation. This is carried out by special bacteria known as nitrogen-fixing bacteria. These bacteria convert nitrogen gas (N₂), which plants cannot use, into a form that plants can absorb and utilize. The most common form is nitrate (NO₃⁻), which plants take in through their roots. Animals then obtain nitrogen by consuming plants or other animals that have eaten plants. After the nitrogen has been utilized by living organisms, bacteria in the soil convert waste products and dead organisms back into nitrogen gas through a process called denitrification, completing the nitrogen cycle.
There are different types of nitrogen-fixing bacteria, some live freely in the soil, while others form symbiotic relationships with the roots of certain plants, such as legumes. Cyanobacteria and Rhizobium are notable members of the nitrogen-fixing bacteria group. Additionally, lightning can also transform atmospheric nitrogen into nitrate, providing another source for the nitrogen cycle.
An igneous rock sample is about 250,000 years old. Would you use uranium-lead radiometric dating to find its age?
the particles of an object are packed tightly together and are vibrating. when the object is heated, the particles start to move faster and slide past each other. this is an examples of
A student needs help completing an energy transfer diagram for a ceiling fan. Which BEST fills in the blanks labeled M and N to describe the transfer of energy?
A)N: Electrical and M: Potential energy B)N: Light energy and M: Electrical energy C)N: Electrical energy and M: Kinetic energy D)N: Mechanical energy and M: Electrical energy
Answer: C) N: Electrical energy and M: Kinetic energy
Explanation:
In the northern hemisphere, are the day lengths greater of less than 12 hours between the winter solstice and the spring equinox?
An airplane is accelerating forward due to a force of 3320 newtons acting 30 on it. Then it encounters wind resistance that exerts a backward force of 550 newtons. What is the net force, in newtons, acting on the airplane?
please help
A rigid tank of air is cooled (temperature decreased). The volume has to remain constant because it is a rigid tank. The air pressure in the rigid tank
A. Increases B. Decreases C. Stays the same
The air pressure in the rigid tank Decreases.
Explanation:
A rigid tank is said to be a region where volume is always considered as a constant. During the process of cooling the rigid tank where the temperature is said to be decreased, the effect of air pressure in the tank also decreases.
Because, PV = RT, where P is the pressure, T is temperature, R is constant, V is the volume. Hence pressure is directly proportional to temperature.
true or false a 6 volt battery has a greater electric potential difference than a 1.5 volt battery
Which of the following correctly describes the state of matter of one of the samples? A is a solid because its volume is equal to the volume of the containers. B is a gas because its volume is less than the volume of the containers. B is a solid because it contracts as the containers change. A is a gas because it contracts as the containers change.
Sample A could potentially be a solid since it has the same volume as the container, and solids have a definite volume. However, the volume of a gas can also equal the volume of its container because gases fill the space available to them, so B is not necessarily a gas just because its volume is less than that of its container. The behavior of the samples when the container changes are not specific properties of solids or gases.
Explanation:The question is asking about how to identify the states of matter of different samples based on their properties. In this case, the statements 'A is a solid because its volume is equal to the volume of the containers' and 'B is a gas because its volume is less than the volume of the containers' might be confused. Here is why: solids, liquids, and gases are different states of matter that exist. Solids have definite shape and volume, regardless of their containers. This means sample A could indeed be a solid if its volume equals the volume of the container. However, the volume of a gas is not necessarily less than the volume of its container.
Gases actually take the shape and volume of their containers, so a gas could fill the entire volume of its container if allowed. Neither of the statements 'B is a solid because it contracts as the containers change' and 'A is a gas because it contracts as the containers change' are necessarily true, as contracting is not a specific property of either solids or gases. Without more specific information about these samples, it's difficult to definitively identify their state of matter based on the provided descriptions.
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Which of the following describes how the Mid-Atlantic Ridge formed on Earth at a divergent plate boundary?
Plates moved in closer
Plates slid past each other
Plates moved with each other in the same direction
Plates moved apart
Answer:
Plates moved apart
Explanation:
Answer: Plates moved apart
Explanation:
Its a divergent boundary and that's what happens at divergent boundaries
HURRY PLEASE
When using a calorimeter, the initial temperature of a metal is 70.4C. The initial temperature of the water is 23.6C. At the end of the experiment, the final equilibrium temperature of the water is 29.8C. What is the final temperature of the metal? ____ C What is the temperature change of the water? ____ C What is the temperature change of the metal? ____ C
temperature of a metal is29.8
temp. of water is 6.2
temp. change of metal -40.6
Answer:
The final temperature of metal is [tex]29.8\degree \,\mathrm C[/tex].
The temperature change of water is [tex]6.2 \degree \, \mathrm C[/tex]
The temperature change of the metal [tex]-40.6 \degree \, \mathrm C[/tex]
Explanation:
The term equilibrium means initial temperature and final temperature will be same. Thus, the the temperature of the water at thermal equilibrium, the final temperature of the metal must be the same [tex]29.8\degree \,\mathrm C[/tex].
Find the temperature change of water.
[tex]\mathrm {Change \, of\, temperature} =\mathrm{ Final\, temperature} - \mathrm {Initial\, Temperature}\\=29.8\,\mathrm C-23.6\,\mathrm C\\=6.2\,\mathrm C[/tex]
Find the temperature change of metal.
[tex]\mathrm {Change \, of\, temperature} =\mathrm{ Final\, temperature} - \mathrm {Initial\, Temperature}\\=29.8\,\mathrm C-70.4\,\mathrm C\\=-40.6\,\mathrm C[/tex]
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Which fact is NOT true about gravity?
A. Gravity depends on distance.
B. Gravity depends on weight.
C. Gravity depends on mass.
D .The force of gravity between two objects will never be 0.
Chemical properties of a base include...
Increases the concentration of hydroxide ions when added to water, feels slippery, and forms salt when added to an acid.
Increases the concentration of hydrogen ions when added to water, reacts with metal to form hydrogen gas, and forms salt when added to an acid.
Increases the concentration of hydroxide ions when added to water, reacts with many oils and fats, and forms salt when added to an acid.
Increases the concentration of hydroxide ions when added to water, reacts with many oils and fats, and tastes bitter.
Bases are substances that increase the concentration of hydroxide ions in water. They dissolve and dissociate to release hydroxide ions, and have properties such as feeling slippery and forming salts when added to acids.
Explanation:Bases are substances that increase the concentration of hydroxide ions (OH-) in water. They do not react chemically with water but dissolve and dissociate, releasing hydroxide ions into the solution. Bases can be identified by their properties, such as feeling slippery, forming salts when added to acids, and increasing the concentration of hydroxide ions in water.
For example, when sodium hydroxide (NaOH) dissociates in water, it releases Na+ and OH- ions:
NaOH(s) → Na+ (aq) + OH- (aq)This dissociation process is complete for ionic hydroxides like NaOH, making them strong bases.
Two negative charges that are both -3.0 C push each other apart with a force of 19.2 N. How far apart are the two charges ?
The distance between the two charges is approximately 64828.5 m (or about 64.8 km).
To find the distance between two charges that exert a given force on each other, we use Coulomb's Law, which states:
[tex]\[ F = k_e \frac{|q_1 q_2|}{r^2} \][/tex]
Where:
F is the force between the charges,
[tex]k_e[/tex] is Coulomb's constant [tex](\(8.99 \times 10^9 \, \text{N} \cdot \text{m}^2/\text{C}^2\))[/tex],
[tex]q_1[/tex] and [tex]q_2[/tex] are the magnitudes of the charges,
r is the distance between the charges.
Given data:
[tex]\( q_1 = q_2 = -3.0 \, \text{C} \)[/tex]
F = 19.2 N
We need to find (r).
1. Insert the known values into Coulomb's Law:
[tex]\[ 19.2 = \left(8.99 \times 10^9 \right) \frac{|-3.0 \times -3.0|}{r^2} \][/tex]
2. Simplify the charges:
[tex]\[ 19.2 = \left(8.99 \times 10^9 \right) \frac{9.0}{r^2} \][/tex]
[tex]\[ 19.2 = 8.99 \times 10^9 \times \frac{9.0}{r^2} \][/tex]
[tex]\[ 19.2 = 80.91 \times 10^9 \times \frac{1}{r^2} \][/tex]
[tex]\[ r^2 = \frac{80.91 \times 10^9}{19.2} \][/tex]
[tex]\[ r^2 = 4.21 \times 10^9 \][/tex]
[tex]\[ r = \sqrt{4.21 \times 10^9} \][/tex]
r = 64828.5 m or 64.8 km
As a transverse wave travels through a medium, it displaces the particles:
1. perpendicular to the motion of the wave.
2. vertically along the same plane as the wave.
3. parallel to the direction of the wave motion.
4.horizontally along the plane that the waves travels.
Question 2. As a longitudinal wave travels through a medium, it displaces the particles
1.parallel to the direction which the wave travels.
2.along the opposite plane of travel.
3.vertically along the direction that the wave travels.
4.perpendicular to the path of travel.
Answer:
Transverse wave: 1. perpendicular to the motion of the wave
Longitudinal wave: 1.parallel to the direction which the wave travels.
Explanation:
Waves are periodic oscillations that carry energy withouth transporting matter.
Depending on the direction of the oscillation, there are two types of waves:
- Transverse waves: in transverse waves, the direction of the oscillation is perpendicular to the direction of motion of the wave. Examples of transverse waves are electromagnetic waves (which consist of oscillating electric and magnetic fields that vibrate perpendicularly to the direction of motion of the wave)
- Longitudinal waves: in longitudinal waves, the direction of the oscillation is parallel to the direction of motion of the wave. Examples of longitudinal waves are sound waves (which consist of periodic vibrations of the particles of a medium, such as air. The vibrations create regions of higher density of particles, called compressions, and regions of lower density of particles, called rarefactions).
Answer:
Transverse wave : perpendicular to the motion of the wave.
Longitudinal wave : parallel to the direction which the wave travels.
Explanation:
(a) As a transverse wave travels through a medium, it displaces the particles perpendicular to the motion of the wave. It travels in the form of crest and trough. Electromagnetic wave is an example of transverse wave.
(b) As a longitudinal wave travels through a medium, it displaces the particles parallel to the direction which the wave travels. It travels in the form of compression and rarefaction. Sound wave is an example of longitudinal wave.
According to the theory of plate to tonics how do two plates interact to form large mountain range
Five metal samples, with equal masses, are heated to 200oC. Each solid is dropped into a beaker containing 200 ml 15oC water. Which metal will cool the fastest? A) aluminum B) copper C) gold D) platinu Which sample of copper would demonstrate the GREATEST increase in temperature if 500 J of energy were added to the sample? A) 0.5 kg B) 1.0 kg C) 1.5 kg D) 2.0 kg Eliminate
Answer:
platinum
Explanation:
What energy transformations occur in a tv remote?
Ex: for a battery in a flashlight it's chemical energy to electrical energy to light energy
Pressing the button: Mechanical to electrical
Waste energy from this step: Mechanical to heat
Converting electrical signal to IR: electrical to electromagnetic (infrared rays)
Waste energy from this step: electrical to heat
Chemical energy from battery: chemical to electrical
When is the net force on an object equal to zero?
if you leave home at 1:00 and get to your friends house at 5:00, what was the average speed?
which of these would most likely change if the Earth's orbit around the sun becomes more rounded?
a) tilt of Earth
b) global climate
c) length of days
d) length
Answer:
b) global climate
Explanation:
Earth's orbit around the sun is elliptical. This means, in some part of the year, the earth is closer to sun than others. This effects the global climate. A difference of about 5 degree in temperature occurs when the earth is closest and farthest from the sun. If the orbit is more rounded, the global climate would most likely change. It become more uniform.
How do tests with crash dummies, seat belts, and air bags illustrate newton’s First law of motion
Answer:
Newton law of inertia.
Explanation:
Newton first law states that if any object is in the motion or is in the state of rest then it will remain in that state till the external force is applied on that object. Inertia is the main reason of having seat belts and air bags in the car.
In this case, when seat belt trapped into the passenger than passenger experience same state of motion as car has.
When the car experience any kind of the collision then the car will stop abruptly. In this case seat belt and air bag will help in stopping the motion of passenger in the forward direction.
Therefore Newton's law of inertia is illustrated in test with seat belts, crash dummies, and air bags.
A student look at ocean waves coming into the beach. An oceanwavd with more energy will
A. Have a greater height
B. Have a greater period
C. Travel toward the beach faster
D. Strike the beach with greater frequency