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Q1. Tritium (3H) decays by negative beta decay with a half-life of 12.16 years. Use an atomic weight. What is the mass in g of 1 mCi of tritium? 3.026 For 3H.To what nucleus does 3H decay?
Q2. An underground telephone cable consisting of the pair of identical parallel wires, has suffered a short somewhere along its length. The cable is 5km long and in order to discover where the short is the technician first measures resistance between the ends of two wires at one end of the cable and after that at another end of the cable. (Suppose that nothing is connected to the cable while technician is doing that) The first measurement yields 30.0 Ohm, the second yields 70.0 Ohm. Where is the short? What is the diameter of the wire if it is made of copper?
As part of the safety investigation, two 1400 {rm kg} cars travelling at 23 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.7 {rm s} to stop, and (b) car that hits..
What is change in electrical potential energy of electron
A mass m = 90 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 18.8 m and finally the flat straight section at the same height as the center of the loop (18.8 m off the ground). Because the mass would not..
A 0.39 kg iron horseshoe that is initially at 745°C is dropped into a bucket containing 24 kg of water at 46°C. What is the final equilibrium temperature? Neglect any heat transfer to or from the surroundings.
A child and sled with a combined mass of 49.20 kg slide down a frictionless hill that is 7.38 m high. If the sled starts from rest, what is its speed at the bottom of hill.
Evaluate maximum altitude?
The latent heat of fusion
Illustrate a basketball momentum vectors
pipe open at one end only has a fundamental frequency of 237 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off a portion of the open end. Currently, when both pipes vibrate at their fundamental frequencies, a beat ..
How much time is necessary for the torso to come to rest
The springs of a 1300 {rm kg} car compress 6.0 {rm mm} when its 62 {rm kg} driver gets into the driver's seat. If the car goes over a bump, what would be the frequency of vibrations.
What is the time of oscillation of block
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