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Physics sample exam reviewer

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Physics Sample Exam Reviewer MULTIPLE CHOICES: 1. The value of ˆi · ˆj × kˆ ? A. zero B. +1 C. -1 D. 3 E √ 3 2. The electric field between two parallel plates that are 1.0 × 10– ^2 m apart is 2.0 × 10–^4 N C–^1. Which one of the following is closest to the voltage between the plates? A. 2.0 × 10–8 V B. 2.0 × 10–6 V C. 2.0 × 10–4 V D. 1.0 × 10–2 V 3. Each of four particles move along an x axis. Their coordinates (in meters) as functions of time (in seconds) are given by: Particle 1: x(t) = 3.5 − 2.7t 3 Particle 2: x(t) = 3.5 + 2.7t 3 Particle 3: x(t) = 3.5 + 2.7t 2 Particle 4: x(t) = 3.5 − 3.4t − 2.7t 2 Which of these particles have constant acceleration? A. All four B. Only 1 and 2 C. only 2 and 3 D. only 3 and 4 E. None of them 4. Three charges (–Q, +2Q, –2Q) are placed at the vertices of an isosceles triangle, as shown below. Which one of the following arrows best represents the direction of the net force on the charge –Q? A. C. B. D. 5. Two bodies are falling with negligible air resistance, side by side, above a horizontal plane. If one of the bodies is given an additional horizontal acceleration during its descent, it: A. strikes the plane at the same time as the other body B. strikes the plane earlier than the other body C. has the vertical component of its velocity altered D. has the vertical component of its acceleration altered E. follows a straight line path along the resultant acceleration vector 6. An ultralight aeroplan ...
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