The US had 264 billion barrels of oil in reserve at the end of 2019. Us annual energy consumption is 1.0 x 1020 joules and energy released by burning a liter of oil is 1.2 x 107 joules. How long can the US run on its reserves? Use the conversion 1 barrel = 159 liters.

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A: The distance of a man from the cliff is given as d=12 m

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A: Given the surface: S:  x2+y2+z2=4   thus, the expression:  ∇x2+y2+z2=4=2xi+2yj+2zk   Hence, the unit…

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Q: Q10 In the figure, one end of a uniform beam of weight 310 N is hinged to a wall; the other end is…

A: GIVEN: weight of beam = 310N  θ=270

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A: Solution :-

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Q: A train is 340 m long runs at 48 m/s. Calculate the time ?

A: Introduction :   In this question we are provided with value of distance and speed . With these data…

Q: Calculate the value of force applied if work done is 145 J and displacement is 4.3 m.

A: Introduction :  In this question we are provided with value of work done and displacement . with…

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Q: High–power lasers in factories are used to cut through cloth and metal. One such laser has a beam…

A: Given : d = 1 mm Eo = 1.79 MV/m = 1.79 × 106 V/m

Q: mechanical advantage ?

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Q: reason for your answer.

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Q: The direction of the vector A = 4 i +4j is O 0° O 45° O 90° none of these

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Q: How would I solve for Fnetx and Fnety for problems 2 to 9?

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Q: A 0.643 kg cat sits at the end of a 15.7 kg, 11.2 m long beam. An accident occurs and the support…

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Q: Same situation as before. This time it s a block of mass 1.07 kg sliding with a constant velocity of…

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.