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I'm working on this problem out of my book and I'm come to a problem that I'm very confused on. I'm not really sure where to even start with it. The problem is:
Problem: Radium 88Ra224 has a half-life of about 3.6 days. Given 1 gram, how much will still be present after 1 day? After 1 year?
Please explain each step and equations used.
a laser beam is reflected by a plane mirror. it is observed that the angle between the incident and reflected beams is
A 0.0100 kg wire, 2.00 m long, is fixed at both ends and vibrates in its simplest mode under a tension of 185 N. What could be the frequency of the tuning fork
a potters wheel is rotating at 3.2 rads in a counterclockwise direction when the potter turns it off and lets it slow
A 1.23-kg box slides up an incline plane with a speed of 8.6 m/s. how long will it take for the box to come to rest
A certain rain cloud at an altitude of 1.90 kilometer contains 3.20 x 107 kilogram of water vapor. Determine how long would it take for a 3.17-kW pump to raise the amount of water
suppose that the steel gas tank in your car is completely filled when the temperature is 14deg c. how many gallons
An insect sit's on the edge of a spinning record that has aradius of .15m. What is the insect's acceleration
what is the charge on the surface of a conducting sphere of radius 0.20 m whose potential is 450 v with v 0 at
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 3781 kg), which is made of steel (? = 7850 kg/m3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-p..
A projectile is shot straight up from the earth's surface at a speed of 11000 kilometer per hour. Determine how high does it going
The depth of the potential well for free electron in a metal can be determined by noting that the photoelectric work function represents the energy necessary to remove an electron in such a state has the Fermi energy.
When you take a bath, how many kg of hot water (49 oC) must you mix with cold water (13 C) so that the temperature of the bath is 36 oC? The total mass of the water (hot and cold) is 191-kg.
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