The formula for Kinetic Energy is:
KE = 1/2mv^2
So, KE = 1/2(500)(10)^2
KE = 1/2(500)(100)
KE = 1/2(50000)
KE = 25,000 J
To represent in order how the animals
Answer:
The answer to your question is below.
Explanation:
Question 10.
Halogens are a group in the periodic table (VIIA), these elements have seven electrons in their outermost shell. Examples of halogens are Chlorine, Fluorine, and Bromine.
The correct answer is the first one.
Question 2.
The answer is false, in a neutral atom, the number of protons and electrons are equal but the number of neutrons is different.
Question 3
Nine is the atomic number of fluorine
Question 4
Group is correct
Question 5
True, elements with similar electron configurations are in the same group, so they have similar chemical and physical properties.
Question 6
Alkali metals and have one valence electrons.
Question 7
True
Question 8
8, elements with 8 electrons in their outermost shell are stable.
Question 9
6, due to oxygen has 6 valence electrons it is in group VIA.
Answer:
a) 10 m/s; 9.8 m/s²
Explanation:
After leaving the bench the boy undergoes a semi-projectile motion from top to bottom. Neglecting the effects of air friction, we can safely assume that the horizontal velocity remains constant throughout the motion. Thus, the magnitude of velocity is 10 m/s. The only acceleration in the boy is the acceleration due to gravity, due to free fall motion. Therefore, the magnitude of acceleration is 9.8 m/s².
Therefore, One tenth of a second after he leaves the bench, to two significant figures, the magnitudes of his velocity and acceleration are:
a) <u>10 m/s; 9.8 m/s²</u>