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The eye of a hurricane passes over Grand Bahama Island in a direction 60.0° north of west with a speed of 38.0 km/h. Three hours later, the course of the hurricane suddenly shifts due north, and its speed slows to 26.0 km/h. How far from Grand Bahama is the hurricane 4.20 h after it passes over the island?
Find the speed and acceleration of an electron in the first two Bohr orbits of the Li++ Ion. Also find the acceleration of an electron in the first two bohr orbital of the H atom.
A real image 1.5 cm high is 18.0 cm from a thin lens. The image is on the opposite side of the lens, 32.2 cm from the object. How big is the image
two skaters each of mass m are standing a slight distance apart on a nearly frictionless horizontal surface of ice
What is the electric potential energy of three equal positive charges of 1.33 µC while they are arranged to form a triangle 2.10 x 10-3 m on a side.
A string of length 2.6 m is fixedat both ends. When the string vibrates at a frequency of84.0 Hz, a standing wave with6 loops is formed. What is the wavelength of the waves that travel on the string
Dirk pushes on a packing box with a horizontal force of 52.0 N as he slides it along the floor. How much total work is done on the box in moving it 3.20 m along the floor
A future geosynchronous space station will be used to collect solar energy. The energy is transmitted back to earth as an electromagnetic beam. how large are the station's solar panels
An electron experiences a magnetic force of magnitude 4.20 10-15 N when moving at an angle of 45.0° with respect to a magnetic field of magnitude 3.90 10-3 T. Find the speed of the electron
Light precedes through three polarizing sheets. Unpolarized light enters the 1st sheet and the resultant vertically polarized beam continues through the 2nd and 3rd. What percent of the original intensity emerges from filter #1
The cylinder of a bicycle pump has an interior diameter of 2.0 cm and a length of 40 cm. How far down (in cm) must you push the piston before air begins flowing into the tire
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
A skydiver reaches a "terminal velocity" of 120 km/h. If the skydiver has a mass of 59kg, what is the magnitude of the upward force on the skydiver
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