GATE ME NAT 16: A 2 kg body moves at 9 m/s. Enter kinetic energy in joules.
Correct Answer: 81
Explanation:
KE=½mv²=81.0 J.
MCQ Collection
India MCQs
Practice India questions with answers and explanations.
GATE ME NAT 17: A heat engine receives 150 kJ and rejects 50 kJ. Enter efficiency as a percentage.
Correct Answer: 66.67
Explanation:
η=(Qin−Qout)/Qin=66.67%.
GATE ME NAT 18: A constant force of 4 N moves a body 8 m in its direction. Enter work in joules.
Correct Answer: 32
Explanation:
W=Fd=32 J.
GATE ME NAT 19: A 5 kg body moves at 4 m/s. Enter kinetic energy in joules.
Correct Answer: 40
Explanation:
KE=½mv²=40.0 J.
GATE ME NAT 20: A heat engine receives 420 kJ and rejects 70 kJ. Enter efficiency as a percentage.
Correct Answer: 83.33
Explanation:
η=(Qin−Qout)/Qin=83.33%.
GATE ME NAT 21: A constant force of 7 N moves a body 3 m in its direction. Enter work in joules.
Correct Answer: 21
Explanation:
W=Fd=21 J.
GATE ME NAT 22: A 8 kg body moves at 6 m/s. Enter kinetic energy in joules.
Correct Answer: 144
Explanation:
KE=½mv²=144.0 J.
GATE ME NAT 7: A 9 kg body moves at 3 m/s. Enter kinetic energy in joules.
Correct Answer: 40.5
Explanation:
KE=½mv²=40.5 J.
GATE ME NAT 8: A heat engine receives 120 kJ and rejects 60 kJ. Enter efficiency as a percentage.
Correct Answer: 50
Explanation:
η=(Qin−Qout)/Qin=50.0%.
GATE ME NAT 9: A constant force of 3 N moves a body 9 m in its direction. Enter work in joules.
Correct Answer: 27
Explanation:
W=Fd=27 J.
GATE ME NAT 10: A 4 kg body moves at 5 m/s. Enter kinetic energy in joules.
Correct Answer: 50
Explanation:
KE=½mv²=50.0 J.
GATE ME NAT 1: A 3 kg body moves at 6 m/s. Enter kinetic energy in joules.
Correct Answer: 54
Explanation:
KE=½mv²=54.0 J.