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An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 950 m, horizontal distance 19.2 km, and 25.5° south of west. The second aircraft is at altitude1300 m, horizontal distance 18.0 km, and 16.0° south of west. What is the distance between the two aircraft?
A car is moving to the left at 20 m/s while a truck is moving to the right at 25 m/s. what is the perceived frequency, in Hz, of the sound by the driver of the car
A 1.50 ? 103-kg car starts from rest and accelerates uniformly to 16.5 m/s in 12.4 s. Find the average power developed by the engine
If the magnitude of the drift velocity of free electrons in a copper wire is 9.12 10-4 m/s, what is the electric field in the conductor
A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20g bullets at 975m/s. Find the recoil speed of the hunter if he fires the rifle horizontally
A 200-kg roller coaster car travels over the top of a 40-m high hill (Hill A) traveling at 10 m/s. find the speed of the car at the top of the second hill
A tractor tows a plane from its airport gate, doing 8.9MJ of work. How far does the tractor move the plane
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. find How long will the mortar shell remain in the air
A rectangular loop of wire has dimensions 0.5m by 0.3m. The loop is pivoted at x axis and lies in the xy plane. A uniform magnetic field of magnitude 1.5 T is directed at an angle of 40° with respect to the y axis with field lines parallel to the ..
A proton moves with a speed of 0.955c. Calculate its rest energy and Calculate its kinetic energy
A 1 041-kg satellite orbits the Earth at a constant altitude of 103-km. What is the change in the system's potential energy
An archer shoots an arrow with a velocity of47.5m/s at an angle of50.5° with the horizontal. What is the initial speed of the apple
A 1000 watt hair dryer is connected to 120 V source. Find the current drawn by the hair dryer
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