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A spring is hung from a ceiling,and an object attached to its lower end stretches the spring by adistance of 5.00 cm from its unstretched position when the systemis in equilibrium. If the spring constant is 43.2N/m, determine the mass of the object.
kg
A square loop 15 cm on a side in the xy plane. Its resistance is 0.55 ohms. determine the direction of the induced current in the loop
A researcher heats a 100g piece of unknown material to 150 C,and then drops it into an insulated cup holding 300g of water at25C. What is the specific heat of the material
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava
As shown on the right, a uniform boom with a mass of 30.0 kg and a length of 2.00 meters is suspended at its left end by a low friction bearing and supported at its right end by a low mass horizontal steel wire of diameter 4.00 mm. A 20.0 kg mass ..
An electric eel develops a 460V potential difference between its head and tail. What is the energy delivered by this pulse
A 4000 kg lunar lander is in orbit 50 km above the surface of the moon. How much work must the thrusters do
A thin film of polystyrene is used as an antireflective coating for fabulite, What is the minimum thickness of film required, Assume that the wavelength of the light in air is 510 nanometers
The index of refraction for a certain kind of glass is 1.645 for violet light and 1.615 for red light. A ray of violet light and a ray of red light are both incident on this glass from air and both have the same refraction angle of 31.12o. What is th..
A beam of laser light (? = 741 nm) hits a black wall and is fully absorbed. what is the total force exerted by the photons on the wall
Suppose a distant world with surface gravity of 6.24 m/s^2 has an atmospheric pressure of 7.16 x 10^4 Pa at the surface. What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean
q1. a force does 150 j of work when it acts on a moving object and its direction is in the identical direction as the
In recent years, a number of nearby stars have been found to possess planets. Find the mass of the star
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