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a lightning flash is seen in the sky and 8.2seconds later the boom of the thunder is heard . The temperature of the air is 12 degrees celcius. what is the speed of sound at that temperature? and how far away is the lightning strike?
Billy Dee notes that her favorite record rotates at 34 rev/min. At what speed does the point on the record touching the stylus (needle) move when the stylus (needle) is 5.9 cm from the center?
An aluminum block slides along a horizontal surface. The block has an initial speed of 9.4 m/s and an initial temperature of 9.1degrees C. what is the final temperature of the block
Two isotopes having the same mass number are known as isobars. Calculate the difference in binding energy per nucleon for the isobars 23/11 Na and 23/12 Mg
each second 5e23 nitrogen molecules (m=4.65e23 g) collide with a 10cm2 wall assume that the molecules all travel with a common speed of 290m/s, What is the pressure on the wall
1 the scientific method is used by scientists to understand the natural laws that the universe obeys. scientists are
An object with a mass of m = 4.8 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.225 m, Determine the magnitude of the acceleration of the object
A thermometer can be made from a brass wire (temperature coefficient of resistivity 0.00150°C^?1 at 20.0°C), What is the resistance of the wire
A pair of speakers separated by 0.820 m are driven by the same oscillator at a frequency of 652 Hz. An observer originally positioned at one of the speakers begins to walk along a line vertical to the line joining the speakers.
A car owner forgets to turn off the headlights of his car while it is parked in his garage. how long will it take the battery to completely discharge
High-voltage power lines are a familiar sight throughout the country, What is the resistance of 15 kilometers of this wire
Use Equation m
A cylinder is rotating about an axis that passes through the center of each circular end piece. Find the magnitude of the angular deceleration of the cylinder
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