Aplacekicker kicks a football upward at an angle of 30 and a speed of 5.0 m/s at what other angle will he have to kick a second ball with the same speed to reach the same distance downrange ignore air resistance

60

90

45

15

Which energy transformation occurs in the core of a nuclear reactor? nuclear energy mechanical energy nuclear energy - thermal energy thermal energy -- nuclear energy mechanical energy - nuclear energy

Which sound characteristic is not affected by the relative motion of an object

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.