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(a)the horizontal range of the projective, R, is increasing for [0,45]o

18 / 01 / 2019 Physics

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Q 1 

Figure below shows a projectile launched from the origin with an initial speed of 50 m/s at various angles of projection, . Explain why:

(a)the horizontal range of the projective, R, is increasing for [0,45]o 

(b)the complementary values of the initial angle  result in the same value of R

Q 2 

Give an example of a process in which no heat is transferred to or from the system but the temperature of the system is changes. 

Q 3 

Using the first law of thermodynamics, explain why the total energy of an isolated system is always constant.

Q 4 . 

Expain how conservation of momentum applies to a handball bouncing off a wall ?.  

Q 5 

Escape speed from the surface of the Earth and the Jupiter is 11.2 and 60.0 [km/s], respectively. Explain why the atmosphere of the Earth does not contain significant amounts of light molecules, such as hydrogen and helium, but an atmosphere of the Jupiter does.      


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