From the information given, cannon ball weighs 40 kg and has a potential energy of 14000 J.
We need to find its height.
We will use the formula P.E = mgh
Therefore h = P.E / mg
where P.E is the potential energy,
m is mass in kg,
g is acceleration due to gravity (9.8 m/s²)
h is the height of the object's displacement in meters.
h = P.E. / mg
h = 14000 / 40 × 9.8
h = 14000 / 392
h = 35.7
Therefore the canon ball was 35.7 meters high.
The height of the cannon ball to have 14000 J of potential energy is approximately 357.14 meters. This is calculated using the formula for potential energy: PE = mgh, and solving for 'h'.
The potential energy (PE) of an object is given by the formula PE = mgh, where 'm' is the mass of the object, 'g' is the acceleration due to gravity (standard approximate value is 9.8 m/s² on Earth), and 'h' is the height. In your question, we want to find the height 'h'. Given that the potential energy is 14000 J and the mass of the cannon ball is 40 kg, we can rearrange the formula to solve for 'h': h = PE / (m*g).
So, inputting the given values, h = 14000 J / (40 kg * 9.8 m/s²). Solving this, we find that the height is approximately 357.14 meters. This means the cannon ball was at around this height to have 14000 J of potential energy.
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Answer:
1.28 s
Explanation:
Given:
Δy = 8 m
v₀ = 0 m/s
a = 9.8 m/s²
Find: t
Δy = v₀ t + ½ at²
(8 m) = (0 m/s) t + ½ (9.8 m/s²) t²
t = 1.28 s
trough
crest
swell
trough because the horozontal distance between successive crest
Answer:
Explanation:
Hope this helps
A type of electricity only found in some atoms
The total number of electrons in an atom
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A property of electrons that give them a negative charge
Answer: An atom's ability to attract other electrons and form a chemical bond
Explanation:
The electronegativity of an atom tells of its power to attract electrons. Electronegativity values of elements ranges from 0 to 4.0, a high value means higher ability to attract electrons while a lower value means lower ability to attract electrons. Also, a wider difference in electronegativity between two atoms gives an ionic bond unlike a covalent bond with narrow difference.
Thus, nonmetals like chlorine higher electronegativities than metals like potassium.
Answer:
An atom's ability to attract other electrons and form a chemical bond
Explanation:
I took the test and got the answer right