What percentage of carbon-14 remains in a sample
Carbon dating may be used todate (once living) materials that are between 100 and 40,000 yearsold. The half-life of the first-order decay of carbon-14 is 5730years. What percentage of carbon-14 remains in a sample after40,000 years.
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How many ways there are to place three electrons into an f shell?what is the ground state term for thef3 configuration, and how many states areassociated with this term?
The traffic on the freeway is moving at a constant speed of 16.0 m/s. What distance does the traffic travel while the car is moving the length of the ramp.
What is the maximum possible height above the Earth for the bottom of a thundercloud, which is at a potential 1.42 x 108 V below Earth's surface potential, if there is to be a lightning strike?
Carotenoids, present in all organisms capable of photosynthesis, extend the range of light absorbed by the organism. They exhibit maximal capacity for absorption of light in the range of 440-470 nm.
The object is pulled down, released, and allowed to oscillate. T, the time required for one complete up-and-down oscillation, is given by the equation T = 2p(m/k)1/2. What is the unit for k, the spring constant, if the unit for T is tocks, and the
A softball is hit over a third baseman's head with speed v_0 and at an angle theta from the horizontal. Immediately after the ball is hit, the third baseman turns around and runs straight back at a constant velocity V = 7.000m/s, for a time t=2.00
Helium-oxygen mixtures are used by divers to avoid the bendsand are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.508 g/L at 25 C and 721 mmHg?
What is the magnitude of the average net force that acts on the box during the collision?
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