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The speed of sound in air is 331 m/s. During the next thunderstorm, try to estimate your distance from a lightning bolt by measuring the time lag between the flash and the thunderclap. You can ignore the time it takes for the light flash to reach you. Why?
For your senior project, you are designing a Geiger tube for detecting radiation in the nuclear physics laboratory. This instrument will consist of a long metal cylindrical tube that has a long straight metal wire running down its central axis.
A 300g rock tied to a string is rotated in a vertical circle (up and down, so gravity is important) with radius 0.5m. what is the rotation rate of the rock
A Thermopane window of area 6.8 m2 is constructed of two layers of glass, each 5.4mm thick and separated by an air space of 2 mm. If the inside is at 12?C and the outside is at ?36?C, how much heat is lost through the window? The thermal conductivity..
q1. a unit of area often used in measuring land areas is the hectare defined as 114 m2. an open pit coal mine consumed
A source produces sound waves of time period .001 second and wave length of 20 cm. find the time taken by sound waves to travel a distance of 800 metres.
A modern sculpture has a large horizontal spring, with a spring constant of 274 N/m, By how much has the spring stretched
A box at rest has the shape of a cube 3.5m on a side. This box is loaded onto the flat floor of a spaceship, What is the volume of the box as we observe it
A science student is riding on a flatcar of a train travellingalong a straight horizontal track at a constant speed of 10.0 m/s.The student throws a ball along a bath that she judges to make aninitial angle of 60.0 degrees with the horizontal and ..
A 100kg football player is moving at 5.8m/s to the east; a 140kg player is moving at 5.2m/s to the west. While they are still in the air, which way is the pair moving
What lengths of ship three sides according to the observer
Nitrogen is a gas of diatomic molecules (N2) that behaves approximately like an ideal gas at standard temperature and pressure (STP: T = 273.15 K, P = 1.0 atm = 1.013x10^5 Pa). The atomic mass of nitrogen is 14 g/mol.
An elevator moves downward in a tall building at a constant speed of 4.00 m/s. Estimate the highest floor from which the bolt can fall if the elevator reaches the ground floor before the bolt hits the top of the elevator
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