Physics, 19.10.2021 21:30 fattypickeltoefungus
1: Hai thành phố A và B cách nhau 250km. Lúc 7h sáng,2 ô tô khởi hành từ hai thành
phố đó hướng về nhau. Xe từ A có vận tốc v1 = 60km/h, xe kia có vận tốc v2 = 40
km/h. Hỏi 2 ô tô sẽ gặp nhau lúc mấy giờ? tại vị trí cách B bao nhiêu km?
Answers: 3
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Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?
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On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)
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To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r
Answers: 2
1: Hai thành phố A và B cách nhau 250km. Lúc 7h sáng,2 ô tô khởi hành từ hai thành
phố đó hướng về...
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