Answer:
d) 289.31 m
Explanation:
Energy provided by potential energy = mgh = m x 9.8x 200 sin10.5 = 357.18m
Energy used by friction = μmgcos 10.5 x 200 = .075 x m x 9.8 x cos 10.5 x200 = 144.54 m .
Energy used by friction on plain surface = μmg x d.( dis distance covered on plain ) =.075x m x 9.8 xd = .735 m d
To equate
357.18 m -144.54 m = .735 m d
d = 289.31 m .
Answer:
The effect of gravity on object makes objects stable and not floating in the air . It also makes any object thrown up to return back
Answer:
Explanation:
The enegy of a single photon is given by:
where
h is the Planck costant
c is the speed of light
is the wavelength of the photon
In this problem,
so the energy of one photon is
1 mole of photons contains a number of Avogadro of photons:
therefore, the total energy of 1 mole of these photons will be
D as that's the only negative shown out of those choices.
