One of Newton's laws uses the equation F= ma. Which statement describes.
the meaning of this equation?

A. Velocity is a change in speed or direction.

B. Objects will change motion when unbalanced forces are applied.

C. An object can move only if no forces are applied to it.

D. It takes more force to move something that has more mass.

Answer:

C and D

Explanation:

have a great day

Answer:

There are two forces acting in opposition to the driving force, so  the friction and the road and the air resistance. The air resistance is much greater than the friction with the road when a vehicle is in motion. When a vehicle is at rest, all of the forces acting on it are balanced.

Given the values of wavelength and frequency of the wave, the speed at which it was travelling is 150ms⁻¹.

Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

Expression from the wavelength, frequency and speed relation;

λ = v ÷ f

Where λ is wavelength, v is velocity/speed and f is frequency.

Given the data in the question;

We substitute our values into the above expression.

λ = v ÷ f

15m = v ÷ 10s⁻¹

v = 15m × 10s⁻¹

v = 150ms⁻¹

Given the values of wavelength and frequency of the wave, the speed at which it was travelling is 150ms⁻¹.

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A4 B2 C1 D3

A- it's at the top and not moving so its all potential

B- Bottom so no potential, a little is lost to friction- a little thermal, it's moving so ther'es kinetic

C- in the middle hieght- some potential, lost more to friction so more thermal, not moving so no kinetic

D- bottom, so no potential. more energy lost to friction. still moving so some kinetic

Answer: D

Explanation: Its a type of white blood cell that moves by amoeboid

Answer:

1) Coal is a natural resource, so is wood, wind energy, soil, salt, fluorite, water, and copper

2) Solar energy, natural gas, and wind energy are all renewable

3) Salt is non - renewable as is synthetic diamonds and plastic  

4) I think it would be number

5) Based on their mineral, chemical, and textural composition

Explanation:

Hope this helps :)

Answer:

Situation -- Predicted Motion

How is motion predicted?

Newton's second law of motion says that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. You can use it to predict the motion of an object. The net force is the vector sum of all the forces that act on the object.

Rolling down an open

space

What causes an object to roll down a ramp?

When you lift an object up off the ground, it has potential energy due to gravity.  So when you roll a ball down a ramp, it has the most potential energy when it is at the top, and this potential energy is converted to both translational and rotational kinetic energy as it rolls down.

Throwing in the air

Analyzing motion for objects in freefall

For example, when a ball is thrown up in the air, the ball's velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration g, the magnitude of velocity decreases as the ball approaches maximum heigh.

Dropping on the floor

The force of gravity causes objects to fall toward the center of Earth. The acceleration of free-falling objects is therefore called the acceleration due to gravity. ... The direction of the acceleration due to gravity is downward (towards the center of Earth). In fact, its direction defines what we call vertical.

Explanation:

Answer : This is an example of Kenitic and potential energy

Explanation:

kenitic: the act of moving or motion

potential: not. moving YET

he was not moving when he was on the plane and had potential energy cause he wasn't getting pulled down and kenitic energy was when he was getting pulled down from force of gravity when he was getting pulled to the ground when he was skydiving

1. D: the ability to cause a change or do work

The others dont make sense for energy.

2. C: Lamp

A lamp uses the electric current to light up a room, or area.

3. B: foil will bend away

The same charges repel each other that is why a magnet is repelled by the same pole of another magnet.

4. A: Sound

You can’t hear light or any of the other options.

5. A: gravity

Gravity is a force of nature that pulls on everything.

6. C: static electricity

The opposite charges stick to each other, a battery again is an example of this.

7. B: a copper nail

Metal is one of the best electric conductors.

8. C: closed circuit

This is because if a circuit is closed the electricity flows through perfectly but for example an open one would not work or it would leak energy.

Hope this helps

The work input = Fi × di

To solve for work input, you need to know the force acting on an object and the distance it moves in the direction of the force. Work input is defined as the product of force and distance, given by the formula:

Work Input = Force × Distance × cosθ

Where θ is the angle between the force vector and the direction of motion. If the force is applied in the direction of motion, then θ = 0 and cosθ = 1, so the formula simplifies to:

Work Input = Force × Distance

For example, if you are pushing a box with a force of 50 newtons over a distance of 10 meters, the work input would be:

Work Input = 50 N × 10 m × cos(0°) = 500 Joules

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Answer: F i × d i

Explanation:

Answer:

Explanation:

A fishing pole maybe?

Answer:

A aieplane

Explanation:

Because brittle means hard but liable to break or shatter easily.

Answer:

Explanation:

Radiation is the transfer of heat energy through space by electromagnetic radiation.

Answer:

A

Explanation:

warm air rises creating low presure

cold air sinks creating high presure

so this means that temprature is realated to presure.

Answer:

39 m/s

Explanation:

speed = frequency x wavelength (All SI Unit)

speed = 100 Hz x 0.30 m = 30 m/s

Answer:

Generally, in science scale is used to describe the size or volume of something.

Explanation:

I'm not sure what science you're talking about but in chemistry, scale the range in mass or volume of a chemical reaction.

Also there isn't a 'science section' but there are separate sections for different types of sciences like chem and bio.

Answer: Room temperature

Explanation: it makes sense (sorry if its wrong)

Answer:

A falling object is in free fall when the only force acting on the force is gravity.

Explanation:

Because the only force acting on you is gravity, the scale no longer is pushing your cart up. Or in other words - your no longer pushing down onto the scale.

Air

In the case of your helium balloon, it most likely floated away before you could catch it because helium is much lighter (or less dense) than the air in our environment.

Answer:

Tampa, FL would experience precipitation in form of rain.

Explanation:

This is because in the key, it shows that it has low pressure and according to the passage, if there is low pressure, clouds would form, giving the area a higher chance of rainfall.

Answer:10

Explanation:

In the context of the Moon model, the fraction of the Moon that was always lit up by the light is half, or 1/2.

The explanation for this is that the Moon model discussed previously most likely depicts the Moon's phases as seen from Earth. The phases of the moon are caused by distinct areas of the lit side of the moon that are visible from Earth at various times during its orbit.

The Sun always illuminates half of the Moon's surface, leaving the other side in darkness. From Earth, we can only see the bright portion; the unlit portion is invisible. Different phases result from variations in the visible fraction of the lighted half of the Moon as it revolves around the Earth.

Therefore,  the fraction of the Moon that was always lit up by the light is half, or 1/2.

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Answer: hope this helps ♡

A: Parallel

Explanation:

It's a parallel circuit because it has two or more paths for the electricity to flow through (the paths are parallel).

Answer:

A

Explanation:

Earth is revolving around the sun in an elliptical orbit, with sun as one of its focus. So, the correct shape is A.

Newton's law of gravity states that, every body in the universe attract each other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Here,

Earth is revolving around the sun in an elliptical orbit, with sun as its focus.

According to Kepler's law of orbits, every planet moves in an elliptical orbit with sun as one of its focus.

From, Newton's law of gravity and Kepler's law of orbital motion, we can say that the earth is moving in an elliptical orbit because, the earth is experiencing gravitational force of attraction due to the sun at the centre and also due to the other planets revolving in the solar system.

Due to the overall gravitational force, the earth will have to adjust the orbital motion in order to attain stability. As a result, the orbit of earth will have a distortion from its circular shape, forming an elliptical shape for orbit, which is a stable shape.

Hence,

Earth is revolving around the sun in an elliptical orbit, with sun as one of its focus. So, the correct shape is D

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Answer:

C. Beats

Explanation:

When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.

Answer:

beats

Explanation:

got it right

Answer:

 The topic of the story is about how woodpeckers can peck without causing damage to their brains.

"The average woodpecker smashes its beak against a hard surface more than 10,000 times a day."

"This traumatic brain injury is caused by a blow to the skull."

"So why doesn’t the constant hammering turn woodpeckers’ brains into mush?"

The conclusion of the story is that woodpeckers don't get brain damage from pecking because their brains are small, which allows them to handle the force of the pecks.

"Small masses can tolerate stronger impact forces without being damaged,"

"The hits aren’t that dangerous because the birds’ brains are so small."

"To answer this question, the researchers calculated how harmful the blows from pecking actually are."

Explanation:

Answer:

When considering the environmental impact of a sewing machine, it is unlikely that this common household appliance immediately conjures images of ecological threat. However, the sewing machine plays a leading role in the fashion industry, which, according to a report by the Ellen MacArthur Foundation, is one of the largest sources of pollution in the world. The report suggests that the textile and fashion industries produce more pollution than aviation and international shipping combined.

Also, with the production of sewing machinery projected to exceed $7 billion this year in China alone, the distribution of those machines will have a massive impact on greenhouse gas emissions. The mass production and distribution of sewing machines, both industrial and domestic, also requires tons of packaging material which negatively impacts the environment. Lonely Whale and the Point Break Foundation estimate that by 2025 there will be one ton of plastic for every three tons of fish in the ocean. Even more alarming, the United Nations suggests that by 2050 there will be more plastic than fish.

Modern domestic sewing machines are made from plastics and polymers, which increases affordability. It also increases the likelihood that consumers will replace rather than repair, especially in the case of handheld sewing machines, which are a growing novelty. With sewing machines constituting an increasing proportion of the millions of tons of household appliances which end up in landfills, this also poses a significant environmental concern.

Explanation:

Hope that helps