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Two automobiles of identical mass approach an intersection. One car is traveling with velocity 14.5 m/s toward the east and the other car is traveling north with speed v2i. Neither driver sees the other. The vehicles collide in the intersection and stick together, leaving parallel skid marks at an angle of 52.5 degree north of east. Find the initial speed of the northward-moving vehicle?
______ mi/h
Two divers jump from a 2.90 m platform. One jumps upward at 1.80 m/s, and the second steps off the platform as the first passes it on the waydown.
An 8 Ohm speaker is connected across the output terminals of a power amplifier that delivers 72 W. What is the current supplied to the speaker
q1. if the create has a mass of 90 kg and is 1.6 m tall and 0.80 m in depth and width what is the minimum force needed
At the Earth's surface a projectile is launched straight up at a speed of 8.4 km/s. To what height will it rise
A 16.0-? resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 170-V generator. At what frequency is the current a maximum
Assume that the reservoir is 200m deep, held back by the dam wall . A small horizontal pipe at the base of the dam transfers water to the generator hall, where it gushes out at high speed and is used to turn the turbines that generate electricity.
Filament is heated to 2000K and is a blackbody of area 1cm^2. Thermal power radiated is 90.7 W. At what wavelength is it peaked
a 250 kg flatcar 30 m long is moving with a speed of 3.0 ms along horizontal frictionless rails. a 61 kg worker starts
A playground ride consits of a disk of mass M = 47kg and radius R = 1.6 m mounted on a low friction axle. A child of mass m = 18kg runs at speed v =2.7 m/s on a tangential to the disk and jumps onto the outer edge of the disk.
A siphon tube is filled with gasoline and closed at each end. One end is inserted into a gasoline tank 0.15 m below the surface of the gasoline. What is the corresponding rate of flow of the gasoline
Theradius changes from 10.0 cm to 20.0 cm in a time of 8.0 s.The magnetic field is 3.0 T. The loop has a resistance of 5.0 ohms. what is thevalue of the current while the radius is changing
a ball is pushed with an initial velocity of 6 m/s. the ball rolls down a hill with a constant acceleration of 2 m/s^2. what is the balls velocity at the bottom of the hill
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