The speed of the two boats are 7 miles per hour and 24 miles per hour.
Explanation:
Let the speed of the first boat be x miles per hour and second boat be x+17 miles per hour.
As they move at right angle to each other, this problem can be solved using Pythagoras theorem.
The two boats will form a right angle with hypotenuse 25 miles after one hour.
Applying the theorem we get,
∴ x= -24 and 7
As speed cannot be negative,
We get speed of first boat = 7 miles per hour and
Speed of second boat = 7+17 = 24 miles per hour.
Answer:Developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete- Niels Bohr
Discovery of energy quanta made him the originator of quantum theory -Max Plank
Formulated the wave equation; stationary and time-dependent Schrödinger equation- Erwin Schrödinger
Best known to the general public for his "mass–energy equivalence formula" ; E = mc^2-B Albert Einstein
Postulated the wave nature of electrons and suggested that all matter has wave properties- Louis de Broglie
Explanation:
All the names mentioned above contributed towards the development of the wave mechanical model of the atom. Their names were matched with their contributions as required by the question.
Answer:
the answer is push and friction
Explanation:
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Answer:
62.5m
Explanation:
Given parameters:
Mass of the ball = 0.5kg
Initial velocity = 35m/s
At the maximum height final velocity is 0m/s
Unknown:
Height of the rise of the ball = ?
Solution:
To solve this problem, we apply the right motion equation which is shown below;
v² = u² - 2gh
v is the final velocity
u is the initial velocity
g is the acceleration due to gravity
h is the height
Now insert the parameters and solve;
0² = 35² - 2(9.8)(h)
-1225 = -19.6h
h = 62.5m
Answer:
Gravity,momentum & friction are examples of FORCE.
Explanation:
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