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a car heading north collides at an intersection with a truck heading east. if they lock together and travel 28 m.s at 46 degrees north of east just after the collision, how fast was the car initially traveling? assume that the two vehicles have the same mass.
The drawing shows one horizontal wire with the current going up and one vertical wire with the current going to the right. Point A is dH to the right and dV above the intersection. Point B is dH to the left and dV below the intersection.
If the efficiency of a reversible engine is 28.%, what is its COP operated as a refrigerator
A herd of wild horses races across the flat, open plains of the Great Basin in central Nevada. If the horses are running at 12.1 m/s at a compass heading of 286 degrees, illustrate what is the northward component of their velocity?
Calculate escape velocity for an object started at the surface of the earth, going straight up. Neglect any complications due to the earth turning.
A 89.0 kg skydiver hanging from a parachute bounces up and down with a period of 1.50 s. What is the new period of oscillation when a second skydiver
A charge of -270e is uniformly spread through the volume of a sphere of radius 2.10 cm. What is the volume charge density in that sphere
A force vector has a magnitude of 594 newtons and points at an angle 37o of below the positive x axis. What are (1) the x scalar component and (2) the y scalar component of the vector.
An RLC circuit is set up with a 350 mH inductor, a 6.8 mF capacitor and a 550 W resistor. What is the phase angle of the circuit
A beam of parallel light, 1.50 mm in diameter passes through a lens with a focal length of 13.7 cm. What is the distance between the two lenses
An opera singer in a convertible sings a note at 600 whereas cruising down the highway at 81. What is the frequency heard by a person standing beside the road in front of car? What is the frequency heard by the person standing beside the road behi..
A certain defibrillator sends 0.12 C of charge through the heart. How much energy is released when it discharges
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -55cm. Use ray tracing to determine the height of the image
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