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512 g of an unknown metal at a temperature of 15 degrees Celsius is dropped into a 100 g aluminum container holding 325 g of water at 98 degrees Celsius. A short time later, the container of water and metal stabilizes at a new temperature of 78 degrees Celsius. identify the metal.
A wave pulse travels down a slinky. The mass of the slinky is m = 0.94 kg and is initially stretched to a length L = 7.5 m. What is the speed of the wave pulse
A ball thrown straight up at an initial speed of 14.0m/s reaches a maximum height of 7.6m. What fraction of the ball's initial kinetic energy is dissipated by air resistance as the ball moves upward?
given y 2 sin 2p x 1 find the amplitude the period and the phase shift.given y - 3 cos 4x - p 2 find the amplitude
What is speed of the car just before it lands safely
In a skating stunt known as "cracking-the-whip," a number of skaters hold hands and form a straight line. estimate the magnitude of the centripetal force that acts on him
By how much does a 10-cm-thick layer of glass wool insulation decrease the heat loss through the roof of a house (area 100 m2, Rf = 0.15 m2K/W for the roof alone, Rf = 2.5 m2K/W for 10-cm-thick glass wool)
During an adiabatic process, the temperature of 6.00 moles of a monatomic ideal gas drops from 565°C to 227°C. Find the change in internal energy
A bowling ball (mass = 7.2 kg, radius = 0.12 m) and a billiard ball (mass = 0.45 kg, radius = 0.028 m) may each be treated as uniform spheres
An alpha particle (the nucleus of a helium atom, with charge +2 and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.6 nm apart
What is the pressure change in water going from a 3.2- cm-diameter pipe to a 1.9- cm-diameter pipe if the velocity in the smaller pipe is 6.5 m/s
A 0.058 kg arrow is fired horizontally. The bowstring exerts an average force of 65 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow
If you stand next to a wall on a frictionless skateboard and pushthe wall with a force of 30 newtons, how hard does the wall push on you
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