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In a drag race, the position of a car as a function of time is given by x=bt2, with b = 2.045m/s2 . In an attempt to determine the car's velocity midway down a 400-m track, two observers stand at the 165-m and 235-m marks and note the time when the car passes. What value do the two observers compute for the car's velocity over this 70m stretch?
The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically ur=0.002. How far will the locomotive move during this time
A parallel-plate capacitor has plates with an area of 850 cm2 separated by 0.8 mm. What is the electric field between the plates when they are charged with 1.600e10-6 C
A 5.97kg block is traveling on a one-dimensional frictionless surface. The block strikes a second block of mass 5.08kg that was initially at rest, What was the initial momentum of the first block
Would it be correct to claim language as a distinguishing feature of H. sapiens? Why or why not? What evidence exists for the uniqueness or non-uniqueness of human language?
question a ruby laser produces radiation of wavelength 633 nm in pulses with a duration of 1.0010-9s. if the laser
My car has rear defrosters that are made of 13 wires embedded into the rear window. They can melt a thin layer of ice, What is the cross-sectional area of each wire
A 0.16-kg ball on a stick is whirled on a vertical circle at a constant speed. Find the tension in the stick
If the energy removed from an engine as heat during one cycle is3.4x102 J, how much energy should be added to the engine through one cycle in order for it to operate at 25 percent efficiency? Answer in units of J.
while driving in your car with a constant speed of 15.0 ms you encounter a bump in the road that has a circular
Light with a wavelength of 390 nanometer shines on a metal surface, which emits electrons. Determine what the work function and identify the metal
An object with mass m1 = 8 kg traveling with an x-velocity of V1x = 15/17 collides with an object with mass m2 = 12kg traveling with an x-velocity of V2x = - 15/13, Find the other object's x-velocity
a 20 Kg block slides along a frictionless table at 20 m/s. What will be the final momentum and kinetic energy of the joined blocks
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