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Speeding ticket? You are driving your car uphill along a straight road. Suddenly you see a car run a red light and enter the intersection just ahead of you. You slam on your brakes and skid in a straight line to a stop, leaving skid marks 5 feet long. A policeman observes the whole incident and, much to your shock, gives you a ticket for exceeding the speed limit of 80 mph. When you get home, you consult your Physics notes and estimate that the coefficient of kinetic friction between your tires and the road was 2 and the coefficient of static friction was 1. You estimate that the hill made an angle of 40 degrees with the horizontal. You look up in your owner's manual and find that your car weighs 3000 lb. Will you fight the traffic ticket in court?
A strip of copper 10 mm wide and 900µm thick is placed in a uniform magnetic field B vec of magnitude 0.30 T, with B vec perpendicular to the strip. A current i = 23 A is then sent during the strip such that a Hall potential dissimilarity V appears a..
question1a woman walks 290 m in the direction 37deg east of north then 177 m directly east. finda magnitude andb angle
question1consider an array of parallel wires with uniform spacing of 1.30 cm between centers. in air at 20.0degc
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gasses called air. how many gas molecules does the flask contain
A 3*5 card containing two pinholes, 0.08mm in diamter andseparated center to center by 0.10mm, how far away should the screen be
A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of 0.120 rad/s2. After making 2876 revolutions, its angular speed is 139 rad/s. What..
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
You are given five light bulbs designed to operate on 160 mA current at 3.0 V (rms values), and want to connect them in parallel, through an ideal transformer, to 120 V rms AC household power. Draw a circuit diagram showing the AC power source (a ..
What is the tension in the cord in the original situation. A cube of ice is taken from the freezer at -9.3°C and placed in a 95 g aluminum calorimeter filled with 297 g of water at room temperature of 20°C. The final situation is observed to be all..
A 78.3 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 522 (food) Calories. How high must the person climb
A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 4.50 cm2 and a large one of cross-sectional area 220 cm2. find what minimum force must be applied to small piston
A radar antenna is tracking a satellite orbiting the earth. At a certain time,the radar screen shows the satellite to be 162 km away.The radar antenna is pointing upward at the angle of 62.3 degrees from the ground.find the x and y components(in k..
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