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A 460-m-wide river has a uniform flow speed of 2.1 m/s during a jungle and toward the east. An explorer wishes to leave a small clearing on the south bank and cross the river in a powerboat that moves at a constant speed of 7.9 m/s by respect to the water. There is a clearing on the north bank 46m upstream from a point directly opposite the clearing on the south bank. A0 at what angle, gauged relative to the direction of flow of the river, should the boat be pointed in order to travel in a straight line and land in the clearing on the north bank? B) How long will the boat take to cross the river and land in the clearing?
A person running a fever has a temperature of 39.6°C. What is this temperature on the Fahrenheit scale
In an experiment designed to measure the speed of light, a laser is aimed at a mirror that is 58.0 km due north. A detector is placed142 m due east of the laser. The mirror is to be aligned so thatlight from the laser refelects into the detector.
A tether ball moves around the pole in a horizontal circle with radius 1.5m. If the mass of the ball is 1.3 kg, what angle does the rope make with the pole
An arrow is shot at 30.0 degrees above the horizontal. Its velocity is 49 m/s and it hits the target. What is the maximum height the arrow will attain
A uniform disk that has a mass M rotates freely about a horizontal axis that goes during the center and is perpendicular to the plane of the disk. A particle of mass m rests at the top of the disk on the rim directly above the pivot. As the particle ..
When a 58 g tennis ball is served it accelerates from rest to a constant speed of 42 m/s the impact with the racket gives the ball a constant acceleration over a distance of 37 cm illustrate what is the magnitude of the net force acting on the ball..
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. How far is each spectator from the player
When an air capacitor with a capacitance of 350 nF (1 nF = 10-9F) is connected to a power supply, the energy stored in the capacitor is 2.00×10-5J, What is the dielectric constant of the slab
R-134a is flowing at 1kg/s and throttled from 850 kPa and 40 C to - 40 C. Heat is gained at a rate of 1 kJ/s from the surroundings at 25 C
A simple harmonic oscillator is undergoing oscillations with an amplitude A. How far is it from its equilibrium position when the kinetic and potential energies are equal?
An iron anchor of density of 7870 kg/m^3 appears 200 N lighter in water then in air. Determine the weight of the anchor in air
the metlife blimp snoopy one is moving at a constant velocity of 18.93 ms. its velocity vector makes an angle of 15
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