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A 100 gram piece of gold that is heated to 160 C and placed in 200 g of 20 C water. Determine what is the equilibrium temperature if the specific heat of gold is 0.128J/gC and specific heat of water is 4.18 J/gc?
A vertical spring of spring constant 140N/m supports a mass of 80g. The mass oscillates in a tube of liquid. Estimate the damping constant b
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 28.2°, What is the index of refraction of the substance
A car chases a coyote down a road ending in a sheer cliff. What frequency does the coyote hear for the sound reflected from the cliff
A block is pushed up a 20 degree friction-less incline with an initial speed 12.0 m/s. How high up the plane does the block slide before coming to rest
A rectangular loop of wire is sitting next to a straight wire, What is the magnitude on the net force on the loop
A laboratory technician drops an 83.5g solid sample of unknown material at a temperature of 100?C into a calorimeter. Compute the specific heat capacity of the sample
The pressure inside a gas bottle at 25.5 °C is 3630 kPa. What will be the pressure inside the bottle
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a heighth=3meters and a slope of5degrees with respect to the ground. What is the initial gravitational energy of the box at the top of the ramp
Initially there are 6*10 power 9 radioactive of element w (decay constant 0.173/day) in a sample. As a nucleus of w decays, it converts 2.67*10 power -28 kg of its mass to energy and releases the energy. How much time (in days) is needed for the samp..
a field (parallel to the axis of the coil) with a magnitude given by B(t) = (4.0 + 3.0t2) T, where t is in s. What is the value of the induced current in the wire at t=3.5 s
Charges of 3.0 nC, -2.0 nC, -7.0 nC, and 1.0 nC are contained inside a rectangular box with length 1.0 m, width 2.0 m, What is the electric flux through the surface of the box
The nucleus of a promethium-145 atomcontains 61 protons. Assume that thenucleus is a sphere with radius 5.69fm and with the charge of the protons uniformly spread through thesphere. At the nucleus surface, what are the magnitude and direction of the ..
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