Physics, 09.10.2019 22:30 evanwall91
A2000 kg pick up truck experiences a 150 n of air resistance and a 200 n of rolling resistance(this is due to the deformation of the tires). how large is the force exerted by the road on the drive wheels if the car is traveling (a) at a constant speed of 30 m/s and (b) with an acceleration of 0.1 m/s^2 .
Answers: 1
Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 3
Physics, 22.06.2019 09:00
Sobre transformações cíclicas, são feitas algumas afirmações, determine quais estão corretas. i – a variação de energia interna em uma transformação cíclica é nula; ii – o trabalho, em uma transformação cíclica, é sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cíclica é, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocórica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
Answers: 1
A2000 kg pick up truck experiences a 150 n of air resistance and a 200 n of rolling resistance(this...
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