a butterfly has a wingspan of 66mm and a height of 6cm which i greater its wingspan or its height
Answer:
496.7 K
Explanation:
The efficiency of a Carnot engine is given by the equation:
where:
is the temperature of the hot reservoir
is the temperature of the cold reservoir
For the engine in the problem, we know that
is the efficiency
is the temperature of the cold reservoir
Solving for , we find:
1) 4 m/s
2) 5 m/s
3) 3 m/s
4) 2 m/s
Answer: B. The earth pulls more on the shuttle
Explanation:
Gravitational pull is directly proportional to the mass of the pulling body. In this case, earth's mass is larger than moon's mass, therefore, earth's gravitational pull on satellite will be greater than moon's gravitational pull on satellite.
Answer:
C. The final kinetic energy is equal to the initial potential energy.
Explanation:
Based on the Principle of energy conservation:
Sum of the Initial Energy = Sum of the Final Energy
Initial Kinetic Energy + Initial Potential Energy = Final Kinetic Energy + Final Potential Energy..........(1)
Since according to the question:
Initial Kinetic Energy = 0
Final Potential Energy = 0
The equation (1) above reduces to
Initial Potential Energy = Final Kinetic Energy
2.00 A
they want me to put an explanation but im not bout to do that uhnuhn