Earthquake S-wave, radio waves, X Ray's, Visible light are examples of transverse waves.
Wave can be defined as any form of disturbance which is transmitted through a medium and energy is transferred from one medium to another thereby causing displacement of the medium.
A Transverse wave is a type of wave in which the wave there is a vibration of the wave medium which is as a result of the wave movement which now become perpendicular to the direction of the wave.
Therefore, Earthquake S-wave, radio waves, X Ray's , visible light are examples of transverse waves.
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b. glass.
c. filament.
d. vacuum.
Answer:filament
Explanation:
Weight is defined as a body's mass multiplied by its acceleration due to gravity.
Test Book's weight on mars = 8.1 N.
Weight = (mass) x (gravity)
= (2.2 kg) x (3.7 m/s^2)
= 8.1 newtons
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new terminal velocity of 10 m/s. She falls at that speed for 3 seconds before landing on the ground.
Sketch the following graphs:
Position vs. Time
Velocity vs. Time
Acceleration vs. Time
During freefall, the position and velocity of the skydiver increase at a constant rate until reaching terminal velocity. After opening the parachute, the position and velocity decrease to a new terminal velocity. The acceleration is constant during freefall and becomes negative when the parachute slows the skydiver down.
Position vs. Time:
During the first 5 seconds, the skydiver is in freefall and her position increases at a constant rate. After opening the parachute, her position still increases but at a slower rate due to the decrease in terminal velocity. When the parachute slows her down, the position increases at a slower rate again. The position remains constant during the final 3 seconds as the skydiver lands on the ground.
Velocity vs. Time:
During the freefall, the velocity of the skydiver steadily increases until it reaches the terminal velocity of 50 m/s. After opening the parachute, the velocity decreases to the new terminal velocity of 10 m/s. The velocity remains constant until the skydiver lands.
Acceleration vs. Time:
At the start of the jump, the skydiver experiences a constant acceleration due to gravity. After reaching terminal velocity, the acceleration becomes zero since there is no net force acting on the skydiver. When the parachute is opened, the skydiver experiences a negative acceleration due to air resistance, slowing down until the new terminal velocity is reached. The acceleration then becomes zero until the skydiver lands.
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An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutrons in addition to the number of protons that distinctively defines the element. The nuclei of most atoms have neutrons as well as protons.
Answer: An atom valence electron shell determines its chemical reactivity.
Explanation:
An atom's valence electron shell determines its chemical reactivity. The amount of electrons in the outermost shell of an atom is its valence electron and it determines how reactive the atom is.
The reactivity of an atom depends on the number of electrons in its outermost shell. Atoms that has their outermost electrons full e.g noble gases like argon, krypton etc are unreactive because there is no room for the atom to donate or accept any electron.
Elements like sodium and chlorine are reactive because they possesses 1 and 7 electrons in their outermost shell respectively as such they can donate and accept electrons making them reactive elements.
The valence electron shell of an atom determines its chemical reactivity. This is due to the role these outermost electrons play in the formation of chemical bonds. Atoms aim to achieve a stable state, typically with eight electrons in their outermost shell, through accepting, donating, or sharing electrons.
The correct answer to the multiple choice question about the atom's valence electron shell is '2. determines its chemical reactivity'. The outermost shell of an atom is known as the valence shell. This shell, holding the valence electrons, is essential in determining an atom's chemical reactivity. This is because it's the valence electrons that are engaged in the formation of chemical bonds.
Chemical reactivity refers to the ease with which an atom gains, loses, or shares electrons. Stable atoms, like helium or larger atoms with eight electrons, are less likely to participate in chemical reactions. They already have a filled valence shell. However, other atoms, those with less than eight electrons, will strive to complete their outer shell by interacting with other atoms, either accepting, donating or sharing electrons to achieve stability.
Importantly, not all elements have enough electrons to completely fill their outermost shells and so they form chemical bonds by sharing, accepting, or donating electrons to other atoms. The formation of these bonds is largely determined by what is often referred to as the 'octet rule', which states that atoms seek to fill or have eight electrons in their outermost electron shell to achieve greater stability.
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