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A highway is to be built between two towns, one of which lies 87.0 km south and 50.0 km west of the other. (a) What is the shortest length of highway that can be built between the two towns, and (b) at what angle would this highway be directed, as a positive angle with respect to due west?
what are the three longest wavelengths for standing waves on a 300-cm-long string that is fixed at both ends in meters?
A 1100 kg car increases it speed from 40 km/hr to 60 km/hr in 5 seconds. What is the resultant work done on the car
A boulder has 300J of potential energy sitting on the edge of cliff. What is the boulder's kinetic energy as it hits the ground.
A 94 g stone is whirled in a horizontal circle on the end of a 73 cm long string. The stone takes 1.10 s to make each complete revolution. Conclude the angle that the string makes with the horizontal.
the intensity of electromagnetic radiation from the sun reaching the earths upper atmosphere is 1.37 kwm2assuming an
A fly wheel with a radius of 0.400m starts from rest and accelerates with a constant angular acceleration of 0.300 rad/sec^2. find the resultant acceleration of a point on its rim after 2 sec
A rotating wheel requires a time t = 4.32s to rotate 37.0 revolutions. What is the constant angular acceleration (rad/s2 of the wheel
a proton is released from rest inside a region of constant uniform electric field e1 pointing due north. 22.3 seconds
a singly ionized helium atom he has only one electron in orbit about the nuclues. what is the radius of the ion when it
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.
A diffraction grating is made up of slits of width 290 nm with separation 910 nm. How many maxima are there in the full diffraction pattern
a uniformly charged sphere which carries a total charge q radius r is rotating along z axis with an angular speed ?.
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