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An eagle is flying horizontally at 5.7 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed doubles? (b) How much additional time would be required for the speed to double again?
A reflecting, spherical Christmas tree ornament has a diameter of 20 cm. A child looks at the ornament from a distance of 40 cm. define the image she sees. Where is the image locate.
A spectral line from the left side of Saturn's rings, as you see them, is at a wavelength slightly shorter than the same spectral line measured from the right side of Saturn's rings. Which way (direction) is Saturn rotating and why?
How much current does an immersion heater draw from the car
A beam of light enters the fiber from air at an angle theta1 with respect to the normal. What is theta1 if light strikes the core-cladding interface at critical angle theta c.
Two 18 cm diameter charged disks face each other, 25 cm apart. Both disks are charged to - 30 nC. What is the electric field strength at the midpoint between two disks.
The spheres are then separated so that there is a distance of 200mm between their centers. What is the force between them?
A block starting atop a frictionless hemispherical dome starts sliding from rest. Write down the two equations of motion of the block in terms of r and ? (i.e. use polar coordinates).
A gas expands from I to F. The energy added to the gas by heat is 442 J when the gas goes from I to F along the diagonal path. What is the change in internal energy of the gas.
What is the coefficient of static between crate and incline
How much work does the electric field do in moving a -7.7 microCoulomb charge from ground to a point whose potential is +positive 55V higher.
The radius of Earth is about 6.38 multiplied by 10^3 km. A 7.02 multiplied by 10^3 N spacecraft travels away from Earth. What is the weight of spacecraft at the following distances from Earth's surface: 6.38 times 10^3 km and 1.4 times 10^4 km.
A near-sighted person's eyeglasses has a focal length of ? 22.0 cm, and the lens is 1.8 cm from the eye. If the person switches to contact lenses that are placed directly on the eye, what should be the focal length of the corresponding contact len..
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