The waves with the LEAST energy have _____ frequencies and _____ amplitudes.
A. low; large
B. low; small
C. high; large
D. high; small

Answer:

C. Sun

Explanation:

Answer:

Fan 1, because Fan 2 cannot convert energy into sound.

Explanation:

When Two similar fans are operating in a room. Fan 1 makes a squeaking noise while running. Fan 2 is silent. Then Fan 2 has more energy efficiency because Fan 1 converts some energy into sound. Therefore correct answer is D.

Energy is nothing but the ability to do work. there are different energies in different form which are thermal energy, mechanical energy, electric energy and sound energy etc.

According to first law of thermodynamic, Energy neither be created nor be destroyed. it can only be transferred from one form into another form.

in case of Fan 1, Electric energy is given to it but it makes a squeaking noise while running. It means that it transfer some amount of total energy in sound energy and remaining for mechanical energy. Fan 1 can not transfer all the energy in the mechanical energy, there is loss in the energy in the form of sound.

in case of Fan 2, it is silent, it is converting all the electric energy into mechanical energy. there is no loss of energy. hence it is more energy efficient.

Hence option D is correct.

To know more about Energy, click :

https://brainly.com/question/1932868

#SPJ2

The air currents across the continents would determine the distribution of the air.

Air currents across the continents are primarily driven by temperature differences and the rotation of the Earth. The warm air near the equator rises and flows towards the poles, while the cooler air near the poles sinks and flows towards the equator.

This creates large-scale circulation patterns known as Hadley cells, Ferrell cells, and Polar cells. These cells are responsible for the trade winds, westerlies, and easterlies, respectively. Additionally, there are also local winds caused by differences in terrain, such as sea breezes and valley breezes.

Learn more about air currents:https://brainly.com/question/4134845

#SPJ1

Answer:

you would measure the mass and volume of the two balls.

Answer:

THE FOOTBALL IS BIGGER IN LENGTH BUT SHORTER IN SIZE

Explanation:

why you delete my answer bro :l

Answer:

Different climates caused cultures to develop different regional lifestyles

Explanation:

quiz

Answer:

1. convert=cause to change in form, character, or function

2. energy conversion=the process through which energy is changed into forms that are useful to humans

3. energy transformation=energy is changed from one form to another

4. energy can neither be created nor destroyed, it can only change forms. the amount of energy stays the same. energy in= energy out

Answer: B.) Rotational motion

Explanation: An object can be explained as exhibiting a rotational state of motion if the movement of the object occurs along a circular path such that the body is positioned about a fixed point, that is the axis of rotation is fixed. Therefore, the axis or rotation point does not change and the body moves in a circular path. Rotational motion could be observed during the motion of a fan, wheels of cars or bicycles. Here, the axis of rotation is fixed at a point and the wheel of the car or blades of the fan moves along a circular path about the fixed point.

Answer:

39,200J

Explanation:

just took the test

The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J

Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.

mass(m)  = 10kg

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

altitude(height (h)) = 400m

Meteor's Potential energy = m * g * h

                                           = 10 * 9.8 * 400 = 39200 J

correct option will be a) 39200 J

learn more about Potential Energy :

https://brainly.com/question/14404024?referrer=searchResults

#SPJ3

Answer: Explanation:

Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.

Answer: Pretty sure it is B

Explanation:

When you cook, dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun’s energy.  Heat is the correct term to use in these cases because they show that heat flows from something warmer to something cooler. So, option(B) is correct.

As a result of a temperature difference, energy is transferred from one body to another and is known as heat. The hotter body transfers energy—heat flows—from the cooler body when two bodies with different temperatures are brought together.

An increase in the temperature of the colder body and a reduction in the temperature of the hotter body are typically, though not always, the results of this energy transfer.

A substance can absorb heat without increasing in temperature by transitioning from one physical state (or phase) to another, such as melting, sublimation, boiling, or shifting from one solid form to another (usually called a crystalline transition).

Learn more about heat here:

https://brainly.com/question/1429452

#SPJ2

Answer:

This was not helpful at all i dont likle you ur not invited to my birthday party it was a sleepover too!

Explanation:

I dont want to pay for premium. give me answers for free

Answer:

its a compass rose or a temperature that tells how is it hot or cold or it is to u where to go when needed like a map.And the angles is 6

Explanation:

Answer:

What kinds of microorganisms were found on the pillow and what kinds of allergy symptoms were caused by these microorganisms?

ANSWER:

Charge flows together through the external circuit at a rate that is everywhere the same. The current is no greater at one location as it is at another location. The actual amount of current varies inversely with the amount of overall resistance. There is a clear relationship between the resistance of the individual resistors and the overall resistance of the collection of resistors. As far as the battery that is pumping the charge is concerned, the presence of two 6-Ω ;resistors in series would be equivalent to having one 12-Ω resistor in the circuit. The presence of three 6-Ω resistors in series would be equivalent to having one 18-Ω resistor in the circuit. And the presence of four 6-Ω resistors in series would be equivalent to having one 24-Ω resistor in the circuit.

POKEMON FAN HUH LUCARIO

MARK AS BRANLIEST ANSWER

Answer: its B

Explanation:

Metal abrasive disks are used as a water coolant. These are used mostly to slice stones and metals. Grit discs have several advantages over various kinds of discs. They have such a relatively fast cutting speed. The grit disc sander is not a hefty instrument that can be easily held when operating on a scaffold.

Therefore, the answer is "Option B".

Learn more:

brainly.com/question/10647666

Answer:c

Explanation: i am on study island and had that

Explanation:

\

its the 1 one

Answer:superimposition.

Explanation:it occurs when two or more waves pass through one another.

Answer:

True

Explanation:

Dominant alleles are always represented with uppercase letters

Answer:

Wind turbine since the place is often windy

Answer:

If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.

Hope my answer helps you ✌️

Mark BRAINLIEST

Answer:

Displacement versus time and acceleration versus time

The graphs which shows the straight line for the motion of a falling object are velocity versus time and acceleration versus time.

The position-time graph shows the change in position of the moving object over the timescale.

In the image attached below, the graph is plotted for the Displacement-time graph (A), Velocity-time graph (B), and Acceleration-time graph (C).

In this three graph only velocity and acceleration shows the straight lines for the motion of falling object.

Hence, the graphs which shows the straight line for the motion of a falling object are velocity versus time and acceleration versus time.

Learn more about the position-time graph  here;

https://brainly.com/question/13207278

Answer:

is a sign of a chemical change

Explanation:

The tablet reacts with the water to form carbon dioxide

Answer:

Force

If you're taking classical physics, simply stated, a force is a push or a pull of some sort. But there is one other very important thing to understand about Force. A true Force is always an interaction (at least from a classical perspective). That means that forces always come in pairs. This is stated in Newton's Third Law (equal and opposite forces). Every action must have a reaction. This is required for all true forces. Another consequence of this is that force is a vector, meaning it has a magnitude and a direction. The action and reaction will always be opposite in direction.

A lot of people will say F=ma. This is true. However, it is important to keep in mind that this definition is a calculational tool. It is more precise to say the Sum of all forces=ma. The point is that ma is not a force. Forces are things like weight, tension, normal, friction, gravity, electrostatic, magnetic, and various other applied forces. The sum of forces on an object equals the product of its mass times its acceleration.

It is important to keep in mind that the force is on the object that accelerates. Another way to state this is that objects cannot accelerate themselves. You cannot push yourself back (or forwards). But if you push a heavy object like a desk forwards, then the desk can push you back.

Energy

There are many kinds of energy. There are two important things to know.

Energy is the ability to do work. It doesn't mean work is being done, but that work can be done. (So you can see there is an intimate relationship between work and energy).

Energy is conserved. That means the total amount of energy is always constant. If the energy is a system changes somehow, that means some work was done in order to move the energy from one system to another.

Energy is also a scalar (given that Work is a scalar).

Answer: The Equator

Explanation: The Equator is the place on Earth that is the most exposed to the sun rays throughout the year, which is why the climate is constant and without changes in this part of the world. The Equator always gets the sun rays at right angle, or very near the right angle.

Answer:

Explanation:

The volume of the other glob would be 38.5 million, since 1/2 of 77 million is 38.5 million.

Answer:

38.5 million

Explanation:

Volume on one glob = 77 million

Volume of other glob = 77 x \(\frac{1}{2}\) = 38.5 million

Since they said that the vol. of other glob is half of the first one. So, we divided 77 by 2.

Hope this helped. Pls mark me the BRAINLIEST!

Answer:

Seconds

Explanation:

Seconds are used most in physics, biology and chemistry to either determine the speed of ano object or in this case for biology and chemistry used to measure rate of reaction

Answer:

The estimated braking force needed to stop the lorry is zero, based on the given information and calculations. However, it's important to note that this result is likely not accurate, as some force is required to stop a moving object. It's possible that additional information or calculations are needed to obtain a more realistic estimate of the braking force.

Explanation:

To estimate the braking force needed to stop the lorry, we can use Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a).

In this case, the lorry decelerates uniformly, so the acceleration is constant. The initial velocity is assumed to be zero since the lorry comes to a stop. The final velocity is also zero. Therefore, we can use the equation:

Final velocity squared (vf^2) = Initial velocity squared (vi^2) + 2 * acceleration (a) * distance (d)

Since vi = 0 and vf = 0, the equation simplifies to:

0 = 0 + 2 * a * d

Solving for acceleration (a), we have:

2 * a * d = 0

a = 0

Since the acceleration is zero, it means that the braking force needed to stop the lorry is also zero. This is likely not an accurate result as some force is required to stop the lorry. It's possible that additional information or calculations are needed to accurately estimate the braking force.

The braking force required to stop a 6371 kg lorry after spotting a hazard and applying the brakes is what the question is asking for. The lorry decelerates uniformly and comes to a stop 60 meters after the brakes are applied.

The following steps will guide you on how to calculate the braking force:

Step 1: Determine the mass of the lorry which is 6371 kg. This will be denoted as m.

Step 2: Determine the distance travelled by the lorry, which is 60 m.

Step 3: Determine the time taken by the lorry to stop. This can be done by using the formula for uniform deceleration, which is a = (v-u)/t where v is the final velocity, u is the initial velocity and a is the uniform deceleration. Since the lorry comes to a stop, its final velocity is zero and its initial velocity is unknown.

However, we can assume that the lorry was initially travelling at a constant speed before spotting the hazard. Therefore, we can assume that the initial velocity was equal to the average velocity of the lorry before the brakes were applied.

This can be calculated using the formula v = d/t where d is the distance travelled and t is the time taken. The average velocity can therefore be calculated as follows: v = d/t = 60 m/t

Step 4: Rearrange the formula for uniform deceleration, a = (v-u)/t, to find u which is the initial velocity. Since the lorry comes to a stop, we know that v = 0.

Therefore: u = v - at where a is the uniform deceleration and t is the time taken to stop which is also equal to the time taken for the lorry to travel the distance of 60 meters. Substituting for v, we get: u = - at

Step 5: Calculate the acceleration of the lorry using the formula a = (v-u)/t. Since the final velocity is zero, we get: a = -u/t = -(-at)/t = a The acceleration is negative since the lorry is decelerating.

Step 6: Calculate the braking force using the formula F = ma where F is the braking force and m is the mass of the lorry. Therefore: F = ma = (-ma) since a is negative = (-6371 kg) (a) Therefore, the braking force required to stop the lorry is -6371a N where a is the uniform deceleration calculated in Step 5.

For more such questions on lorry decelerates

https://brainly.com/question/16964101

#SPJ8

Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.

Explanation:

Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping