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Problem:
An electron moves at a speed of v = 3 x 107 m/s parallel to and a distance d = 10 cm from a conducting wire carrying a current of I = 40 A. If the directions of the electron and current are as shown in the figure, what is the magnitude (in N) and direction of the force experienced by the electron?
A 21 g bullet travelling at 255 m/s is fired into a 0.452 kg wooden block anchored to a 100 N/m spring. How far is spring compressed to the nearest thousandth of a meter.
A toddler weighs 10 kg and raises herself onto tiptoe (on both feet). Her feet are 8cm long with each ankle joint being located 4.5cm from the point at which her feet contact the floor. What is the tension force in one of her achilles tendons
a capacitor is connected to a 240v peak 50hz power supply. if the maximum current is 430ma what is the capacitance?
a 4603.24 kg open train car is rolling on frictionless rails at 24.04 ms when it starts pouring rain. a few minutes
A 10 kg door that is 1.0m wide and 2.5m tall is supported by two hinges,each of which is 10 cm from the top(or bottom)of the door. what is the force on each hinge
A golf club strikes a 0.034-kg golf ball in order to launch it from the tee. With what speed does the ball leave the club
During the late 19th and early 20th centuries, direct observations showed that a glacier in Switzerland flowed forward in the downhill direction while its snout (terminus) was retreating higher up the valley? Which of the following describes these..
A physics student has designed a winter game. He has a platform 4.6 meters high with a rope tied to a tree at the same height, how fast are the boys and the sled moving after they "collide"
Raw sewage is raised vertically by 5.49m in the amountof 1.89*106 liters each day. What is the power output of the shift station pump
a hair dryer has a power rating of 12000w at 120v rms. assume that the hair dryer is the only resistance in the
The drawing shows a mercury barometer. Consider two barometers, one using mercury and another using an unknown liquid. assume that the pressure above the liquid in each tube is negligible. The height of the unknown liquid is 18.3 times greater tha..
an object with mass m 6.5 kg is moving with a constant velocity along the y axis v08.4 ms. suddenly a force along the x
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