Answer:
This is because of the first Newton's law:
If an object is at rest or at moving with constant velocity, it will remain doing that untill a force is applied on the object.
Now, if the car is still, and then it speeds, the box will want to keep the movement that it was doing before, so it will slide in the seat until the box gets the same speed as the car (this can happen when the box hits the back of the seat, and the back of the seat "pushes" the box)
Now, the same happens when the car stops, now the box has a velocity and when the car stops the box will keep moving forward, because there is no force that stops the box.
True or false
Answer:
The borders of played never change.
True or false
true
Answer:
The correct answer is actually false.
Explanation:
Took the quiz
a ball being thrown straight up would excel faster.
nonmetals and metals
metalloids and metals
nonmetals
Answer:
Nonmetals typically combine to form covalent compounds.
Explanation:
The octet rule states that the atoms of the elements bond each other in the attempt to complete their valence layer with eight electrons. That is to say, the atoms will tend to yield or share electrons to complete eight electrons in the valence layer.
In other words, the objective is to have the closest noble gas electronic configuration, thus having the last complete electron layer and acquiring stability.
The covalent bond is the chemical bond between atoms where electrons are shared, forming a molecule. Covalent bonds are established between non-metallic elements. These elements have many electrons at their outermost level (valence electrons) and tend to gain electrons in order to comply with the octet rule mentioned and be stable. The shared electron pair is common to the two atoms and holds them together.
Then, nonmetals typically combine to form covalent compounds.
Answer: ionic bonds can form between nonmetals and metals, while covalent bonds form when electrons are shared between two nonmetals.
Explanation:
A plant species that develops the ability to excrete salt through the leaves of the plant could survive in soils that have high concentrations of salt.
A rodent species that develops the ability to hibernate, or remain inactive during the winter months, would be able to conserve energy when little food is available.
Which of the following is true?
Hello. You forgot to enter the answer options. The options are:
"A)Adaptations increase the probability of an organism surviving and reproducing in a specific environment. B)Sudden environmental changes are always necessary for the development of new adaptations. C)The inherited characteristics of a species change over time based on the use or disuse of particular characteristics. D)Adaptations allow individual organisms to change their structures based on environmental conditions."
Answer:
A)Adaptations increase the probability of an organism surviving and reproducing in a specific environment.
Explanation:
The adaptations of living beings do not occur by chance, much less occurred overnight. Throughout the evolutionary process, some organisms have undergone transformations that have given them greater chances of survival in the environment, adjusting morphologically and physiologically to the ecosystem in which they live.
To these transformations, selected by the environment and caused by mutations, we call adaptation, related to the defense mechanism, reproduction, locomotion, food and unfavorable weather conditions.
Answer:
20 m/s
Explanation:
The speed of a wave is given by:
where
is the wavelength
f is the frequency
v is the speed
For the wave in this problem,
f = 10 Hz is the frequency
is the wavelength
So the speed is