I think the answer you are looking for A compression wave.
Answer:
Well, the options are not given in the questions. But the correct option is:
"Gamma rays do not completely penetrate earth atmosphere."
Explanation:
Most of the gamma rays coming from the stars and sun can not penetrate the earth's atmosphere because atmosphere is as thick to the gamma rays as a 12 foot thick plate of aluminium. They rather absorb in the atmosphere and knock out electrons by reacting with the atoms and produce ions and electrons. These secondary ions and electrons then came to earth during rain fall. Due to this reason gamma ray telescope was not get funded for the study of black holes.
Answer:
4.5 x 10^6 miles
Calculations can be viewed on the snapshot attached to this reply.
Thanks
Answer:
When mass is greater, the force needed must be greater keeping the acceleration of the wheel chair constant
Explanation:
force is directly proportional to the mass
Answer:
The amount of Potential Energy lost in the form of Thermal Energy is equal to 41.64 MJ.
Explanation:
mass of the cart and passengers = m = 3.5*10⁴ kg
Height = h = 126.5 m
g = 9.8 ms⁻²
v = 10 ms⁻¹
At the top position the Total energy of the ride is in the form of potential energy given as:
P.E = mgh
= 3.5*10⁴*9.8*126.5
= 43389500 J
At the bottom of the drop, all the Potential Energy will be converted into K.E as the ride develops speed given as:
K.E = 0.5*m*v²
= 0.5*3.5 x 10⁴*100
= 1750000 J
The K.E is much less than the P.E energy even though all the P.E of the ride has been converted. The loss of energy is due to the formation of thermal energy which can be calculated as:
Thermal Energy lost = Total energy in the form of P.E(top) - Total energy in the form of K.E(bottom)
= 43389500 - 1750000
= 41639500 J
= 41.64 M J approx M J = mega joule = 10⁶ J
