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A dolphin emits an ultrasonic waves with a frequency of 2.5 x 105 Hz and a wavelenght of 0.020 ft. What is the speed of sound in sea water?
to measure the speed of light fizeau used a rotating disk with equally spaced holes through which light could pass.
Scarlet has taken a summer job at a water park. In her act sheglides up a 2.0 m high frictionless ramp then sails over a 5 m widecage filled with hungry sharks. What is the minimum speed at whichshe can begin her ascent of the ramp in order to avo..
A 10 g particle is undergoing simple harmonic motion with amplitude of 2.0 x 10-3 m and a maximum acceleration of magnitude 8.0 x 103 m/s2. What is the period of the particle
In this section assume the temperature is 20unless directed otherwise. A submarine 79 deep emits a sonar (sound) wave. How deep is the ocean at that point
A projectile is fired at 30° above the horizontal. Any effects due to air resistance are negligible. What is the horizontal component of the initial velocity
A long straight horizontal wire located on the equator carries a current. What direction should current be
A construction worker uses a steel tape to measure the length of an aluminum support column. what is the measured length when the temperature rises to 29.4°C
Consider a proton confined to a region of typical nuclear dimensions, about 5 fm. Use the uncertainty principle to find its minimum possible kinetic energy in MeV, suppose that its moves in only one dimension
A common flashlight bulb is rated at 0.300 A and 2.60 V, what is the temperature of the filament when the bulb is on? Calculate in deg Celsius
A typical nuclear power plant delivers heat from the reactor to the turbines at a temperature of 480°C. what is the maximum possible efficiency of these turbines
A satellite orbits at a distance from the Earth's center of about 6.20 Earth radii and takes 21.7 hours to go around once. What distance (in meters) does the satellite travel in one day
An asteroid of mass 1.00 x 10^9 kg comes from deep space and fallstoward Earth. Assume the asteroid started the fall from rest very far from Earth, and find the change in potential energy when it reaches a point 4.00 x10(8) m from Earth (that's jus..
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