PHY-202-01 Intro to Physics 2 - Mid-Term, DateName&HUID; Instructions: nswer mul
ID: 1783566 • Letter: P
Question
PHY-202-01 Intro to Physics 2 - Mid-Term, DateName&HUID; Instructions: nswer multiple-choice questions by circling your choice of boludface lener. Awr pqestions n the space provided Math work, sketches and needed word explanations must be shown excqt S4 Ex paper can be used if additional space is needed You have 50 minutes to complete the Exam Answer all. The extra over 100 is your hoa 1. 110 pts] An explosion took place at point A (see the figure below). Three persons located at point B, figure below). Three persons lxcated at point B C and D. Assuming the distances AB, AC and AD are the same, what is the order for them to hear the sound of explosion (earliest to latest ]? lal D, B and C lbj C, B and D lel C, D and B Id] B, C and D lel D, C andB Air Land Water tunnel 2. 120 pts] As shown in figure, a positive charge of +3.0 pC is located at point A. (a) If a charge of-0 C is placed at point B, how much force and which direction (draw an arrow in the picture) does the charge at point A experience? (b) If another charge of -2.0pC is placed at point C, how far shoukd be placed so that the charge at point A experiences zero net force (ie find ? (c) What is the electric field at point B created by the charge (+30 pC) at point A (magnitude and direction)? (d) What is the electric field at point C created by the charge (+3.0 pC) at point C (magnitude and direction)? d ? 3. 120 pts! Two point charges, +3.40 pC and-610 pC. are separated by 1.2 m, (a) what is the electric potential midway between them? (b) If a test charge of 2.0 uC is moved to that point, how much work must be done?Explanation / Answer
D B C
D because it is in a straigh line path,
B because it is higher refractive index material but still the path is straight.
C because the wave has to suffer multiple reflections and refractions to reach the point C
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.