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A boat crosses a river with a width w=160m in which thecurrent has a uniform speed of 1.50m/s. The pilot maintains abearing perpendicular to river and a throttle setting to give aconstant speed of 2.00m/s relative to the water.
a) What is the speed of the boat relative to a stationary shoreobserver?
b) How far downstream from the initial position is theboat when it reaches the opposite shore?
A solid sphere is rolling on a surface. What fraction of its total kinetic energy is in the form of rotational kinetic energy about the center of mass?
If a 350 kg object is moving with constant velocity 22 m/s due east, then what is the magnitude of the net force acting on the object
A container of cross-sectional area 107 cm2 contains liquid of density 2.35 g/cm3 to a height of 6.90 cm above a small hole of area 1.00 cm2 in the side. Find the flow rate through the hole
An air conditioner operating between 97F and 72F is rated at 3900 Btu/h cooling capacity. What horsepower is required of the air conditioner motor
Besides the traditional colorimetric acid/base indicators, there is another class that doesn't use color, the olfactory acid-base indicators! These compounds smell or don't smell based on their pH and a lot of them are plant-derived compounds
If the observer knows his/her speed is 25.0 m/s and the temperature is 30°C, and hears a frequency of 450.0 Hz, what is the frequency heard by the source
A steel cable with total length 20 m and mass 100 kg is connected to two poles. The tension in the cable is 2,000 N, and the wind makes the cable vibrate with a frequency of 2 Hz. compute the wavelength of the resulting wave on the cable.
An Olympic long jumper leaves the ground at an angle of 23 degrees and travels through the air a horizontal distance of 9.7 meters before landing
A hollow, conducting sphere with an outer radius of 0.260m and an inner radius of 0.198m has a uniform surface charge density of +6.70×10^?6 C/m^2. What is the new charge density on the outside of the sphere
An interference filter has an effective bandwidth of 10 nm. Would it be feasible to employ such a filter to isolate the calcium emission line at 422.7 nm from the potassium emission line at 404.4 nm? Assume that the signals are triangular in shape. S..
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
A closed loop of wire is given the shape of a circle with a radius of 0.483 m. find the magnitude of the average induced emf in the wire during this time
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