An important news announcement is transmitted by radio waves to people who are 82 km away, sitting next to their radios, and by sounds waves to people sitting across the newsroom, 4.7 m from the newscaster. Take the speed of sound in air to be 340 m/s.
What is the difference in time that the message is received?
Answer in units of ms.

Answer:

The nervous system does depend on other systems visa versa.

Explanation:

They depend on each other because the brain needs nutrients given from the system and also the systems need the sensors from the nervous system.

my bad  i clicked the wrong question to do sorry i wish i could help but im dumb lol

Answer:

d. The objects density

Explanation:

Density is the measure of how much an an object will sink or float in liquid or gas. The density of the liquid or gas is also a factor in how much the object will sink or float.

In United states,  the grasslands are seen in the great plains, prairies, and in the intermountain west regions. They are mostly seen in Oklahoma, Kansas, Nebraska, South Dakota etc.

The grasslands of Kenya are part of the East African savanna, which is characterized by warm temperatures, seasonal rainfall, and a mix of grasses and scattered trees. In the United States, similar grasslands are found in several regions, including:

The Great Plains: This region covers much of the central and western United States, and includes states such as Texas, Oklahoma, Kansas, Nebraska, South Dakota, and North Dakota. The Great Plains are characterized by a mix of grasses and scattered trees, and experience seasonal variations in rainfall.

The prairies: These are grasslands found in the central and western parts of the United States, including states such as Iowa, Illinois, Minnesota, Missouri, and Wisconsin. Like the Great Plains, the prairies are characterized by a mix of grasses and scattered trees.

The Intermountain West: This region covers parts of the western United States, including states such as Colorado, Wyoming, Montana, and Idaho. The Intermountain West is characterized by high-elevation grasslands and scrublands, which are adapted to the region's arid climate and rocky soils.

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The Great Plains in the United States are most similar to the grasslands of Kenya, as both are characterized as temperate grasslands dominated by grasses.

The areas in the United States that are most like the grasslands of Kenya, particularly the savannas of the Taita Hills Wildlife Sanctuary, are the Great Plains. The Great Plains region stretches across the central part of the US and is characterized by vast grasslands. This similarity is due to both regions being temperate grasslands, where the dominant vegetation is grasses and rainfall is moderate, creating an environment that does not support dense forests but does support a rich variety of grasses and herbaceous plants. The climate and ecology of the Great Plains share similarities with the Kenyan savannas, though there are also distinct differences in terms of specific flora and fauna due to geographical separation and varying climate conditions.

Answer:

The solution becomes more acidic.

Explanation:

As the pH of a solution decreases, the concentration of hydrogen ions [H+] increases. Acidic solutions have a higher concentration of hydrogen ions and a lower pH.

I hope this helped. :)

Answer: It evaluates personal information and career information.

Explanation:

Answer:

A.  personal information and career information

Explanation:

Answer:

nonmetals

Explanation:

Answer:1.Air, 2.the ground,3.water

Explanation:I just got it right:)

Answer:

A, B, C OR 1, 2, 3

Explanation: i got it right

Answer:

A battery

Explanation:

Answer:

The answer is 26 neutrons

Explanation:

The element with an atomic number of 22 and a mass number of 48 has 26 neutrons. This is calculated by subtracting the atomic number from the mass number.

The question asks how many neutrons does an element have, given that its atomic number is 22 and its mass number is 48. In chemistry, the atomic number represents the number of protons in an atom, in this case, 22. The mass number represents the sum of the number of protons and neutrons. Therefore, if you subtract the atomic number (protons) from the mass number (protons + neutrons), you will get the number of neutrons.

Mathematically, this can be represented as: Neutrons = Mass number - Atomic number. In this situation, the number of neutrons would be 48 (mass number) - 22 (atomic number), which equals 26 neutrons.

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Answer:

The answer is Refraction

Answer:

Refraction.

Explanation:

Refraction is where lighwaves are bent. your eye assumes that the object is where the light ray is coming from when it actually bent to come at your eye from that angle this is why straws appear slightly out of place in water.

Answer:

  The answer is C) at the very bottom of the hill because the top of a slope has the most potential energy and as it goes down it is converted to kinetic energy, so at the very bottom there is more kinetic energy.

Explanation:

Since potential energy is most concentrated at the peak of a slope and is transformed into kinetic energy as it descends, there is greater kinetic energy toward the bottom of the hill. Hence, option C is correct.

Kinetic energy is a type of power that a particle or an object possesses as a result of its motion. By exerting a net force on an item, work is done, which transfers energy; as a result, the object accelerates and obtains kinetic energy. A moving item or particle's ability to move depends on both its mass and velocity. This is known as kinetic energy. Translation (or movement along the path from one location to another), revolution about there being an axis, vibrations, or any combo of motions are examples of possible types of motion.

A body's squared translational kinetic energy, or 1/2mv², is equivalent to one the product of its mass, m, and its velocity, v.

Therefore, this concludes that option (C) is correct.

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Answer:

Reduce the force

Explanation:

By newtons third law

F=m×a

or

Force =Mass ×Acceleration

In other words

Acceleration=Force/Mass

If the mass drops, to maintain the same acceleration, you need to reduce the force too

Answer:

160N

Explanation:

Moments must be conserved - so.

[tex]20 * 0.4 = F * 0.05[/tex]

[tex]F=\frac{20*0.4}{0.05} = 160[/tex]

A driver's foot presses with a steady force of 20 N on a pedal in a car, so the force F pulling on the piston is 160 N. Hence, option D is correct.

A force in physics is an input that has the power to change an object's motion. A mass-containing object's velocity can vary, or accelerate, as a result of a force. Intuitively, a pushing or a pull can also be used to describe forces. Being such a vector quantity, a force does have magnitude and direction. The SI unit metric newton is used to measure it (N). The letter F stands for force.

According to Newton's second law's original formulation, an object's net force is equal to the speed that its momentum is changing over time.

From the given data in the question,

The momentum must be conserved,

20 × 0.4 = F × 0.05

F = (20 × 0.4)/0.05

F = 160 N

Therefore, the force is 160 N.

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Answer:

Non-metals

Explanation:

when they form ionic compounds do so by gaining electrons. This due to the fact that they have high ionization energies and high electron affinities (referring to their ability to collect electrons). When they do form ions, they are of negative charge and are called anions.

Answer:

C. 32.7%

Explanation:

% composition = ( mass S / mass H2SO4 ) × 100 = 32.08/ 98.10 × 100 = 32.7 % pls mark brainliest

Answer:

I think it is A

Explanation: Wavelength is the distance from one crest to another, or from one trough to another, of a wave (which may be an electromagnetic wave, a sound wave, or any other wave). Crest is the highest point of the wave whereas the trough is the lowest.

The first blank is matter I'm not sure about the rest

Answer:

Matter

invisible

Things

nothing

nothing

Explanation:

I sounds like it goes there. :D

Joseph is conducting an investigation on how two objects compare in mass, volume, and force with each other. When determining the  gravitational force between the two objects, the following characteristics of the objects should be considered :

MASS AND DISTANCE

Explanation:

The gravitational force between two objects is determined by their masses and the force of gravity. The volume, state of matter, and shape of objects do not impact gravitational force, as it is the interaction of objects' masses that matter.

When determining the gravitational force between two objects, the characteristics of the objects that should be considered are their mass and the force of gravity that acts upon them. The volume, state of matter, and shape do not directly impact the gravitational force between objects. According to Newton's Law of Universal Gravitation, the force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Essential Knowledge in physics tells us that gravitational force describes the interaction of one object that has mass with another object that has mass. Therefore, it is the total quantity of matter—an object's mass—that influences the gravitational force. In contrast, the volume depends on the size of an object and its shape but does not affect gravity.

Answer:

Chlorine is a respiratory irritant. The gas irritates the mucus membranes and the liquid burns the skin. As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a few deep breaths. In fact, chlorine was used as a war gas in 1915.

Explanation:

Chlorine, with the chemical symbol Cl, should be handled with caution because it can be harmful. Chlorine gas can cause respiratory problems if inhaled, while liquid chlorine can cause skin and eye burns. It can also react to form more hazardous substances.

Chlorine, represented by the chemical symbol Cl, is an element often found in various compounds and used for a broad range of applications, including water treatment and disinfection in pools. However, it's important to handle chlorine with caution because it can be harmful to human health.

As a gas, chlorine is severely irritating and dangerous, causing issues with respiratory function if inhaled. Its liquid form can cause burns on the skin and eyes. Furthermore, chlorine can react with other chemicals, which might lead to the formation of substances more hazardous than the original chlorine.

This is why proper training, correct handling techniques, and safety measures should always be implemented when dealing with chlorine to minimize risks

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Answer - A substance through which a wave can travel is a medium

Explanation:

A medium is the middle point between the crest and trough and it helps to Carry the wave or you can call it the disturbance of the wave . .

A substance through which a wave can travel is called a medium.

A medium acts as a conduit for the transfer of energy from one point to another by allowing the wave to propagate. Waves require a physical medium to transmit their energy because they rely on the interaction and displacement of particles within the medium.

When a wave passes through a medium, it causes the particles of the medium to vibrate or oscillate in a specific pattern. These vibrations transfer energy from one particle to the next, enabling the wave to travel. The type of medium determines the properties of the wave, such as its speed, direction, and behavior.

Electromagnetic waves, such as light and radio waves, can propagate through a vacuum because they consist of oscillating electric and magnetic fields rather than relying on particles for transmission. These waves can travel through space, allowing us to observe distant stars and communicate wirelessly.

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Answer:

Explanation:

On Mars, 1 kilogram would be about 3.5 Newtons. So, on Earth, the person would mass 77 kilograms, but weigh 754.6 Newtons. On Mars, the person would still mass 77 kilograms (because mass does not change with gravity), but weigh 269.5 Newtons.

Answer:

3.5 newtons

Explanation:

The weigh of the earths surface is 9.8 newtons so on mars it would be 3.5 newtons

The mechanical advantage of the bicycle is 0.1.

Explanation:

A simple machine is a machine that produces the output if we give the required input, and so the output always depends on the input force. Sometimes machines can also reduce the input force to get the required output and the ratio of output to input force is called as the mechanical advantage.

MA = [tex]$\frac{F_{o} }{F_{i} }[/tex]

Now we have the input force = 697 N

Output force = 93 N

So Mechanical advantage can be calculated by inserting those values as, MA = [tex]$\frac{93}{697}\\[/tex]

     = 0.1

So the mechanical advantage of the bicycle is 0.1.

The mechanical advantage (MA) of the bicycle is calculated by dividing the load force by the effort force, resulting in an MA of 0.1 when rounded to the tenths place.

To calculate the bicycle's mechanical advantage (MA), we use the ratio of the load force to the effort force. The formula for mechanical advantage is:

MA = Load Force / Effort Force

Given that the effort force exerted is 697 N, and the load force is 93 N, we plug these values into the formula:

MA = 93 N / 697 N

Calculating this gives us the mechanical advantage of the bicycle, which is:

MA = 0.1334

Rounded to the tenths place:

MA = 0.1

Temperature is crucial as it indicates the average kinetic energy of particles. Thermometers measure temperature using various material properties. Temperature scales allow for precise measurement of how hot objects are.

Temperature is a measure of how hot or cold an object is relative to another object. It is critical to specify how hot or cold something is because temperature indicates the average kinetic energy of the particles in matter, which directly affects various processes like chemical reactions.

Temperature is operationally defined to be what we measure with a thermometer. Thermometers rely on properties of materials like the expansion and contraction of liquid mercury or variation of resistance in wires to provide accurate temperature readings.

Using a temperature scale allows for quantitative measurement of how hot an object is, enabling us to understand changes in thermal energy content and the flow of heat between objects accurately.

Answer:

B 7200 grams

As

7.2 kg = 7.2 * 1000 gram = 7200 grams

Answer:

D

Explanation:

I believe the answer is D, but I am not an expert.

Final answer:

No work has been done when Ethan pushes against a stationary wall because, in physics, work requires displacement (transfer of energy), which does not occur here. Therefore option D. In order for work to be done, the wall needs to move is the correct answer.

Explanation:

When Ethan pushes against a brick wall for 5 minutes and the wall does not move, no work has been done despite the feeling of effort. This is because, in physics, the concept of work requires that there be displacement of the object in the direction of the applied force. Since no displacement occurs in this scenario, there is no transfer of energy to the wall, and therefore, no work is performed according to the formula W = Fd (where W is work, F is the force applied, and d is the displacement). The correct answer to why no work has been done is D. In order for work to be done, the wall needs to move. It is crucial to note that this technical definition of work may differ from the everyday usage of the term, which often includes any exertion of effort.

Answer:

yes

Explanation:

Answer:

A) The current in a parallel circuit and the voltage in a series circuit

Explanation:

Answer:

1. series circuit

2. parallel circuit

3. Watt's law

Explanation:

hope this helps someone!

Answer:

Explanation:

MODES OF HEAT TRANSFER

1) Conduction: This type of heat transfer happens when there is direct contact between the two object.

2) Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas).

3) Radiation: This type of heat transfer happens when there is direct transfer of energy through space.

A. Rubbing your hands together, is a type of energy transformation in which mechanical energy transforms to heat energy.

C. Basking in the sun: is a type of radiation as the sun energy is transferred through space.

D. Striking a match: is a energy transformation in which mechanical energy transforms to heat and light energy.

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