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The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, with x in meters and t in seconds. 1) At what negative time does the particle pass through the origin? 2) At what positive time does the particle pass through the origin?
find out kinetic energy of ball at the highest point of motion.
A 1.4 kg object at x = 2.00 m, y = 3.10 m moves at an angle 45° north of east. Compute the magnitude of the object's angular momentum about the origin.
An airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the least radius of the circular path? (b) At this radius, what is the force causing the centripe..
A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops?
A 110 g cube of ice at 0°C is dropped into 1 kg of water that was originally at 90°C. What is an final temperature of the water after the ice has melted.
What is the minimum coefficient of friction between tires and road that would allow cars to take the turn without sliding off the road.
A planet of mass 8 × 10^24 kg is at location ‹ -4 × 10^11, 7 × 10^11, 0 › m. A star of mass 7 × 10^30 kg is at location ‹ 5 × 10^11, -5 × 10^11, 0 › m. What is the force exerted on the planet by star? (It will probably be helpful to draw the diagr..
Find out the speed of a 56.7 kg thrill seeker at the bottom of the slide, assume no friction. If the thrill seeker has a speed of 24.1 m/s at the bottom, find out the change in mechanical energy due to friction.
what is the equivalent resistance between points A and B?
A college campus features a large fountain surrounded by the circular pool. Two students start at the northernmost point of pool and walk slowly around it in opposite directions.
A particle of mass M decays into two identical particles each of mass m, where m = 0.4M. Prior to the decay, the particle of mass M has a total energy of 4 Mc2 in the laboratory reference frame. The velocities of decay product are along the directi..
In uniform circular motion, a particle undergoes motion in a circular path with a constant speed. Which of the following statement is false and why?
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