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A 2000 kg car moving east at 10.0 m/scollides with a 3000 kg car moving north. The cars stick togetherand move as a unit after the collision, at an angle of 36.0° north of east and at a speed of 4.94 m/s. Find the speed of the 3000 kg car before the collision.
A spider hangs from a strand of silk whose radius is5.8x10-6 m. The density of the silk is 1100kg/m3. When the spider moves, waves travel along thestrand of silk at a speed of 310 m/s. Determine the mass of the spider.
a student builds and calibrates an accelerometer, which she uses to determine the speed of her car around a certain unbanked highway curve. what is the radius of the curve
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^?2cm, Find its speed (vfinal) when it strikes the anode
You close the top of your straw with your thumb and lift the straw out of your glass containing Coke. How large is the error (in per cent) if you neglect the air in the straw
A parallel-plate capacitor with plates of area 2.15 x 10-4m2 is being designed to have a capacitance of 1330 pF. What plate separation is required if the spacebetween the plates is filled with air
The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 120 V outlet, determine how long must the wire be
A boats's motor can allow it to travel at speed 2V. The boat is aimed with a heading of 180 degrees. The river is X metes wide. The river flows at speed V at 270 degrees.
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves on a circle. Find the magnitude of the total acceleration (centripetal plus tangential) ..
Suppose you decide to take a trip in your car today. You start out and drive 32 miles in 20 minutes, What is your average speed for the entire trip including when you were parked
You're a safety engineer reviewing plans for a university's new high-rise dorm. The elevator motors draw 20 A and behave electrically like 2.6-H inductors. How much energy will the resistor dissipate
What is the mass of nitrogen in an nitrogen tank at 20C if the tank has a volume of 0,20m^3 and nitrogen pressure in the tank is 4,0 x 10^6 N/m^2
A .5kg mass attached to the end of a string swings in a vertical circle (radius =2m), What is the magnitude of the force of the string on the mass at this position
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