What is the launch speed of a projectile

Reference no: EM138028

Q1. A cooling unit for chilling the water of an aquarium gives specifications of mechanical power of 1/10 hp and cooling power of 1270 Btu/h. Assuming the unit produces 1/10 hp at 70.0 percent mechanical efficiency (as in 70% of input electric power is converted to mechanical work), calculate its performance coefficient.

Q2. What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to five before coming to rest momentarily?

Q3. How do you calculate the angular momentum change that a planet experiences as it is struck by an asteroid vertical to the radius. I thought that I could solve it by putting the conservation of linear kinetic energy (0.5mv^2) of the asteroid equal to the change of angular kinetic energy (0.5Iw^2). Is this the correct method of solving this problem? Clarify the correct solution.

Reference no: EM138028

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