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Transform the following sinusoids into phasor form and draw a phasor diagram. Use the additive property of phasors to find v1(t) + v2(t).
(a) v1(t) = 100 cos(ωt - 45°) V
(b) v2(t) = 200 cos(ωt + 135°)V
A soccer ball of mass 450 grams is initially moving horizontally east at 16 m/s. You kick it so that it moves horizontally north at 17 m/s. The collision lasts 0.05 s. Find the magnitude and direction of the average force you apply to the ball.
A 0.42-kg object travels from point A to point B. If the speed of the object at point A is 6.0 m/s and the kinetic energy at point B is 8.0 J, determine the following. (a) kinetic energy of the object at point A (b) speed of the object at point B.
suppose one of the resistor in the bridge circuit was heated by baking it in an oven. how would this effect the current
A hypothetical charged particle passes without deflection through crossed electric and magnetic fields of strengths 6940 V/m and 0.125 T, respectively. What is the particle's charge-to-mass ratio
Two trains are traveling toward each other in still air at 27.6 m/s relative to the ground. One train is blowing a whistle at 330 Hz. The speed of sound is 343 m/s.
The index of refraction of a certain liquid is 1.6. What is the critical angle for a light ray traveling in this liquid toward a flat layer of air above it
A copper sheet with length 1.77 m, width 0.587 m, and thickness 1.27 mm is oriented so that its largest surface area is perpendicular to a magnetic field of strength 4.93 T. What is the magnitude of the force on this sheet
A concave mirror has a radius of curvature of 40 centimeter. An object is located 10 centimeter in front of the mirror. Find what are the image distance and magnification
High-speed stroboscopic photographs show that the head of a 200-g golf club is traveling at 45 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
What multiple of the energy needed to escape from Earth gives the energy needed to escape from (a) the Moon and (b) Jupiter?
a block of mass m18 rests on a frictionless surface and is attached to a light cord that is wrapped around a solid
A resistor of 2 ? and another of 3 ? are connected in parallel, and this combination is joined in series with a 4-? resistor across a battery. what is the potential drop across the 3-? resistor
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