Answers: 3
Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 16:40
The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?
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Physics, 22.06.2019 18:30
In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.
Answers: 2
Physics, 22.06.2019 19:00
Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe
Answers: 1
The speed of a 500 g cricket ball changes from 10m/s to 30m/s in just 7 seconds. What is the force a...
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