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A police officer is waiting near an intersection. He sees a truck running a red light. The truck is traveling with a constant speed of 18.0 m/s. The police officer immediately starts to chase the truck. The police officer accelerates with a constant acceleration of 3.0 m/s^2, after which he maintains a constant speed until he catches up with the truck.
What is the final velocity of the police car after accelerating for 10s?
A 169× astronomical telescope is adjusted for a relaxed eye when the two lenses are 1.33 m apart. What is the focal length of each lens
At a certain instant, the earth, moon, and a stationary 1500-kg spacecraft are at the vertices of an equilateral triangle of length 3.84 × 108 m. What is the magnitude of the net gravitational force acting on the spacecraft
Two people stand 3 m away from a large plane mirror and spaced 3.8 m apart in a dark room. At what angle of incidence should one of them shine a flashlight on mirror so that the reflected beam directly strikes the other person.
The fastest measured pitched baseball left the pitcher's hand at a speed of 42.0m/s. what acceleration did he give the ball
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, determine the energy of the electromagnetic radiation
An arc 14.0 cm in length on the circumfrence of a circle subtends an angle of 126 degrees. What is the radius of the cirlce
Thermal expansion increases the length of a clock's pendulum by a fractional increase of 4.9×10-5. Under these conditions, how much error in timekeeping accumulates over 1 day
q1. how many 95w light bulbs can you use in a 120v circuit without tripping a 17a circuit breaker? the bulbs are
The displacement of a wave traveling in the positive x-direction is D(x,t)=(3.5cm)sin(3.2x-132t), where x is in m and t is in s . Part A What is the frequency of this wave? Part B What is the wavelength of this wave? Part C What is the speed of this ..
evaluate what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?
A parallel-plate capacitor has circular plates of 10.4 cm radius and 1.67 mm separation. Calculate the capacitance in picofarads
If random samples, each with n = 36 scores, are selected from a normal population with µ = 80 and ? = 18, how much difference, on average, should there be between a sample mean and the population mean?
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