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A car is driven east for a distance of 51 km, then north for 30 km, and then in a direction 31° east of northfor 29 km. Draw the vectordiagram and determine the total displacement of the car from its starting point.
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. If radar waves have a wavelength of 3.0 cm.
An elevator cable breaks when a 975 kg elevator is 24.5 m above the top of a huge spring (k = 8.00 x 10^4 N/m) at the bottom of the shaft. Calculate the amount the spring compresses
The maximum current in a 26?F capacitor connected to an ac generator with a frequency of 110Hz is 0.15 A. What is the maximum voltage of the generator
An object with mass 2.7 kg is executing simple harmonic motion, attached to a spring with spring constant k=280N/m. Calculate the maximum speed attained by the object
bob whose mass is 36 kg stands at the center of a 200 kg merry-go-round that is spinning at 30 rpm. What is the spinning rate now
A ship sets out to sail to a point 212 km due north. An unexpected storm blows the ship to a point 156km due east of its starting point. How far must it now sail to reach its original destination.
A model rocket fired vertically from the ground ascends with a vertical acceleration of 4.0 m/s2 for 5.8 s, What is the maximum altitude reached
A block resting on a smooth surface explodes into three pieces. A 465 gram piece travels at 1.7 m/s, a 1999 gram piece travels 0.7 m/s, calculate the mass and direction of the third piece.
1200 kg car at velocity 25m/s brakes and stop moving after 40m. What is the coefficient friction between the tires and road
A 430 gram rock is whirled on the end of a string 45 cm long which will break under a tension of 22 N. What is the highest speed the rock can reach before the string breaks? (Neglect gravity.)
Soles of boots that are designed to protect workers from electric shock are rated to pass a maximum rms current of 1.3 mA when connected across an 1.7×10^4V AC source.
You are driving in one direction on a long straight road. You drive in the positive direction at 126 km/h for 30.0 minutes, How far did you drive
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