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In reaching her destination, a backpacker walks with an average velocity of 1 m/s, due west. This average velocity results, because she hikes for 6 km with an average velocity of 3 m/s due west, turns around, and hikes with an average velocity of 0.3 m/s due east. How far east did she walk (in kilometers)?
A dockworker loading crates on a ship findsthat a 18 kg crate, initially at reston a horizontal surface, requires a 78N horizontal force to set it in motion. However, after the crate isin motion, a horizontal force of 56 Nis required to keep it m..
A wire of radius 0.5 cm carries a current of 150 A that is uniformly distributed over its cross-sectional area. find the magnetic field at the surface of the wire
A 2kg package is released on a 53.1 degree incline, 4m from a long spring with force constant 120 n/m that is attached to the bottom of the incline. What is the maximum compression of the spring
You are piloting a small plane that can maintain an air speed of 136.5 kt (knots, or nautical miles per hour) and you want to fly due north (azimuth = 000°) relative to the ground.
The number of turns in the primary and the secondary of a step-up transformer are 93 and 439 respectively. what is the output voltage of this transformer
two forces f1 and f2 are acting on a mass m6.0 kg. the force f1 5.0i 7.0j 2.0k in n. the acceleration of the mass is
An automobile tire has a radius of 0.430 m, and its center moves forward with a linear speed of v = 14.0 m/s. Determine the angular speed of the wheel
Suppose an RLC circuit must be created by choosing an inductor and capacitor to place in series with a 1200 ohm resistor. To tune in the AM band frequencies, calculate an appropriate value for the inductance and determine the max and min capacitance..
Two resistanceless rails rest 37 cm apart on a 4.0 degree ramp. They are joined at the bottom by a 0.55 ohm resistor. What is the terminal (steady) velocity of the bar
In order to get that pesky pig you launch a bird at an angle large enough to pass over the barrier. The pig is 80m from the launching point and the barrier is 30m from the launching point. What is the initial horizontal speed
A heavy mass in free fall does not fall faster than a light mass. The extra weight is compensated for by extra resistance. A heavy mass on a frictionless plane does not slide down faster than a light mass. A heavy ring and a light ring both roll d..
Continuation of Problem 8 and Problem 37. Another explanation for the sliding stones of Racetrack Playa in Death Valley, what is the required wind speed near the sheet
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