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A balloon having an initial temperature of 18.3°C is heated so that the volume doubles while the pressure is kept fixed. Determine the new value of the temperature?
A 2000kg truck traveling at a speed of 6m/s makes a 90 degree turn in a time of 4s and emerges from this turn with a speed of 4m/s. What is the magnitude of the average resultant force on the truck during this turn
A stationary observer hears 597.6 Hz change to 447.8 Hz as a source of constant frequency passes at constant speed. find the source's speed and frequency
a 8.5-kg box is being lifted by means of a light rope that is threaded through a single light frictionless pulley that
the fret closest to the bridge on a guitar is d 21.8 cm from the bridge. when the thinnest string is pressed down at
a spherical mirror is polished on both sides. when the concave side is used as a mirror the magnification is 2.0. what
An athlete executing a long jump leaves the ground at a 35° angle and travels 8.30 m. If this speed were increased by just 4.0%, how much longer would the jump be
your refrigerator has a mass of 112.9 kg including the food in it. it is standing in the middle of your kitchen and you
An airplane flying horizontally at a constant speed of 350 km/h over level ground releases a bundle of food supplies. Ignore the effect of the air on the bundle. find the bundle's initial vertical component of velocity
An airplane has an effective wing surface area of 15 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 63.9 m/s, while the air speed beneath the wings is 51.5 m/s. What is the weight of the plane?
A thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.51). When monochromatic light is incident normally on the system, What is the thickness of the film
A nuclear power plant has a power output of 1004 MW and operates with an efficiency of 32%. If excess heat is carried away from the plant by a river with a flow rate of 1e6 kg/s, what is the rise in temperature of the flowing water?
1200 kg car at velocity 25m/s brakes and stop moving after 40m. What is the coefficient friction between the tires and road
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