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A ball is launched directly upward from ground level with aninitial speed of 19 m/s. (Air resistanceis negligible.)a) How long is the ball in the air?b) What is the greatest height reached by the ball?c) How many seconds after launch is the ball 4 m above the release point?after being thrown (first time)after being thrown (second time)
The filament of a light bulb has a temperature of 2.96E+3 °C and radiates 50 watts of power. The emissivity of the filament is 0.376. Find the surface area of the filament
A string with a mass per length of 2.00 gm/m is stretched with a force of 120 N between two points that are 0.40 m apart. What is the length of the organ pipe
A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. What is the minimum velocity so the string will not go slack as the ball moves around the circle
A heat engine with an efficiency of 35% performs 160j of work, how much heat is discharged to the lower temperature
Recent studies have raised concern about `heading' in youth soccer (i.e., hitting the ball with the head). A soccer player `heads' a size 5 ball, deflecting it by 36.0 deg, but keeping its speed of 10.40 m/s constant. A size 5 ball has a mass of a..
A 60.0 gram golf ball is dropped from a height of 2.00 meters. how much energy did the ball lose
An object of mass 126.309172 g executes SHM with an amplitude of 12.426183 cm, Find the force acting on the object at time 1.487176 s
A turntable of mass 5.01 kg has a radius of 0.129 m and spins with a frequency of 0.530 rev/s. What is its angular momentum? Assume the turntable is a uniform disk.
The Boeing 777 aircraft has a takeoff mass of 255000kg and a takeoff speed of 115m/s, What airflow speed across the top of the wing is necessary for the plane to fly
On average, each person in the industrialized world is responsible for the emission of 10,000 kg of carbon dioxide () every year. This includes that you generate directly, how long would each edge of the cube be
Two identical 0.13 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, where x2 = 0.04 m.
An automobile cooling system holds 16 L of water. How much heat does it absorb if its temperature rises from 20C to 86C
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