Answer:
6.7 x 10^8 mi/hr
Explanation:
Do the math with units ONLY
km/s * miles/ km * s/hr = mi / hr ( ...as the km and s cancel out)
now.... put in the numbers
3 x 10^5 km/s * .62 mi/km * 3600 s / hr = 6.7x 10 ^8 mi/hr
Answer: demesne lands
Explanation:
" (demesne lands) which were for the personal use of the lord of the manor."
Answer:
It's may help you to answer
Answer:
Explanation:
Ignoring friction, the initial kinetic energy will convert to maximum potential energy at its highest point.
PE = KE
mgh = ½mv²
h = v²/2g
h = 36.4²/ (2(9.81))
h = 67.53109...
h = 67.53 m
The book's position is changing linearly with time, so its velocity is constant. This means that the net force acting on the book in the direction <u>parallel</u> to the surface is
∑ <em>F</em> = 10.0 N - <em>n</em> = 0
where <em>n</em> is the magnitude of the normal force on the book due to the wall, and the net force perpedicular to the surface is
∑ <em>F</em> = <em>f</em> - (0.550 kg) <em>g</em> = 0
where <em>f</em> is the mag. of kinetic friction, and <em>f</em> = <em>µn</em> where <em>µ</em> is the coefficient of kinetic friction.
Then
• <em>n</em> = 10.0 N
• <em>f</em> = (0.550 kg) <em>g</em> = 5.39 N
• 5.39 N = <em>µ</em> (10.0 N)
==> <em>µ</em> = 0.539