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A particle slides around a circle on the banked surface. There is no friction or air resistance, the mass is m=20kg. How fast must it go to stay in the circle? l=8.7m theta=30 degrees
Two satellites are in circular obits about earth. one is 150 kmabove the surface, the other 160 km. A)which satellite has thelarger orbital period? B)which one has the greater speed?
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. What is the maximum acceleration that the plane can have
The normal airflow over the Rocky Mountains is west to east. The air loses much of its moisture content and is chilled as it climbs the western side of the mountains. What is its temperature at the end of the descent
A point mass, M, is rotated at a distance R about an axis. Ifthe mass is increased to 2M, what is the new moment ofinertia? If the distance R is doubled to 2R, what is the new moment of inertia
The laser used in cornea surgery to treat corneal disease is the excimer laser, which emits ultraviolet light with a wavelength of 193 nm in air. The index of refraction of the cornea is 1.376. What are the wavelength and frequency of the light in th..
A 675 kg elevator starts from rest. It moves upward for 3.48 s with constant acceleration until it reaches its cruising speed, 1.86 m/s
List the differences between radio waves and microwaves in terms of wavelength, wave frequency and health hazards this is the question why it wants more text i do not know
When you normally drive the freeway between Sacramento and San Francisco at an average speed of 115km/hr (71.5 mph), How much longer does the trip take on Friday
A toy of mass 0.155 kg is undergoing SHM on the end of a horizontal spring with forces constant 305 N/m. When object is a distance 1.20×10-2 m from its equilibrium position, it is observed to have the speed of 0.255 m/s.
How many electrons must be removed from each of two 4.4-kg copper spheres to make the electric force of repulsion between them equal in magnitude to the gravitational attraction between them?
A distant galaxy emits light that has a wavelengthof 500.7 nm. On earth, the wavelength of this light ismeasured to be 503.7 nm. Find the speed of the galaxyrelative to the earth
A copper bar 2.5 m long has a circular cross section of radius 2 cm. One end is kept at 80oC, what is the temperature gradient along the length of the bar
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