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A bicyclist rides at 8 m/s toward the north. A car is moving at 25 m/s also toward the north, and is initially behind the rider. A truck is moving at 15 m/s, toward the south, approaching the bicycle and the car. Calculate the relative velocities of each vehicle compared to the other two. Take north to be in the positive y direction. (Indicate the direction with the sign of your answer.)
A capacitor that is initially uncharged is connected in series with a resistor and a 406.7V emf source with negligible internal resistance, What is the resistance of the resistor
the image of a tree just covers the length of a plane mirror 3.60cmnbsptall when the mirror is held 38.0cmnbspfrom the
Two wires, each 28.15 cm long, are connected to two separate 9.00 V batteries as shown in the figure. The resistance of the first wire is 5.00 Ω, and that of other wire is unknown (R). If the separation between the wires is 4.55 mm, what value of R w..
The index of refraction in diamond is 2.42. What is the critical angle for light in diamond if air is the other medium.If the diamond is encased in glass (n1.5) and our light is still at an angle for part A, what angle does it make with the normal i..
a small glass bead has been charged to 25nc.part a what is the magnitude of the acceleration of a proton that is 3.0cm
A ball falls from a 30 meter tower. How fast is it going when it has fallen two-thirds of the way to the ground? Assume air resistance is negligible
A 100 W point source radiates yellowish-green light of wavelength 555 nm uniformly in all directions. how far from the source could the light be detected
A 460 W heating unit is designed to operate with an applied potential difference of 116 V. By what percentage will its heat output drop if the applied potential difference drops to 112 V
A typical capacitor in an MP3 player has C = 0.10 µF. If a charge ±15.0 µC is placed on the plates, What is the voltage across the capacitor
What are the work, heat, and change in internal energy for processes bc and ca? What are the work, heat, and change in internal energy for process ab?
If the potential difference between a cloud and the ground is about 17MV, how much charge is transferred in a lightning bolt that releases 1.3GJ of energy
A transformer has 683 turns in its primary winding and 109 in its secondary winding. Assuming it has 100 percent efficiency, By what factor does it change the current
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