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1. A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 0.73 kg sample of carbon from the wood has an activity of 2330 decays per minute. Find the age of the charcoal. Living material has an activity of 15 decays/minute per gram of carbon present and the half-life of 14C is 5730 y. Answer in units of y 2. The asymptotic wavelength (λlimit) for the Brackett series is 1500 nm. What is the wavelength of the first emission line? Answer in units of nm 3. asymptotic wavelength (λlimit) for the Lyman series is 91.1 nm. What is the wavelength of the third emission line?
The potential in a region between x = 0 and x = 6.00 m has a linear relation, Calculate the potential at the following positions: x = 0, 3.00 m and 6.00 m and also find magnitude and direction
A coal fired plant generates 600 MW (5.18 x 10^13 J/day) of electric power. The plant burns 4.8 x 10^6 kg of coal each day. what is the ideal efficiency of this plant
Standing on the surface of a small spherical moon whose radius is 6.85·104 m, What maximum height above the surface of the moon will the rock reach
While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.31-m piece of fishing line. What is the angle that the fishing line makes with the vertical
An unknown piece of material with a mass of 5.1 kg and density of 1422 kg/m3 is suspended from a string, Determine the volume of the piece of material
A pocket ion chamber is built with an internal volume of 10 cc and a capacitance of 20 pF. calculate the minimum gamma-ray expose to which the pocket chamber will be sensitive
The Mini Cooper is rated at the maximum power of 115. hp (1 hp=746 W), when moving at 80km/h. Suppose that the net force accelerating the car is constant.
A runner accelerates to a velocity of 5.36 m/s due west in 3 s. His average acceleration is 0.64 m/s2, also directed due west. What was his velocity when he began accelerating
A transformer has 900 turns on its secondary and 100 turns on its primary. The primary is connected to a 11-V source. What is the voltage output of the secondary
An object has a kinetic energy of 317 J and the momentum of magnitude 24.0 kg · m/s.
A generator has a square coil consisting of 580 turns. The coil rotates at 51 rad/s in a 0.28 T magnetic field. What is the length of one side of the coil
A meteor streaking through the night sky is located with radar, its has moved to point B, Find the x component of its average velocity between A and B
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