Smooth ice reduces the unbalanced forces that would slow the hockey puck.
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</span>I<span>llustrative writing refers to a kind of prose writing that explains a topic thoroughly in straightforward manner, providing adequate information and facts. An example of an illustrative writing piece could be an essay or article on "The Rules of Playing Badminton" or "How to Lose 10 pounds in a Month".</span>
Answer:
F = 1908 N
Explanation:
GIVEN,
Incident water stream has a velocity = U = +18.0 m/s,
Exiting water stream has a velocity = V = -18.0 m/s.
Mass of water per sec : M / t = 53 kg /s
Change in velocity d v =18 m / s – ( -18 m / s)
= 36 m / s
Magnitude of the average force exerted on the water by the blade
F = ( M / t ) x dv
=( 53 kg /s ) x ( 36 m/s )
F = 1908 N
Yes for an object moving on a horizontal plane, R = mg (where mg = weight). therefore, for an object moving on a horizontal plane: F = μmg
Answer:
Given:
Temperature, T = 3.13 K
molar mass of molecular hydrogen, m = 2.02 g/mol =
Solution:
To calculate the root mean squarer or rms speed of hydrogen molecule, we use the given formula:
where
R = rydberg's constant = 8.314 J/mol-K
Putting the values in the above formula: