Physics Answers

Aluminum-26, which decays into magnesium-26, has a half-life

of approximately 720 000 years. Use this information to answer

Questions 6 and 7.

6. (a) What type of decay does Al-26 undergo?

(b) Does Al-26 decay in the same way as C-14?

Explain.

1. Two equal positive charges q1 q2 = 4.0 μC are located at (1.20 m, 0) and (-1.20 m, 0), = respectively. What are the magnitude and direction of the total electric force that q1 and q2 exerts on a third charge q3= 7.0 μC located at (0, -0.50 m) ?

2. In problem #1, find the total electric field at (0, -0.50 m).

What type of radioactive decay is involved in carbon

dating? Explain the process of carbon dating.

Cobalt-60, with a half-life of 5.3 years, has a number of

applications, including medical therapy and the sterilization

of medical tools. Determine the mass of a 50 g sample that

would remain after

(a) 6 months

(b) 5 years

Ok so, say a giraffe and a raccoon were both running 35mph would they be running side by side or would the giraffe be much farther ahead do to it's longer legs? 

Find the total capacitance of the combination of capacitors shown in Figure

number 3. Assume the capacitances are known to three decimal places (C1 =

1.000 µF, C2 = 3.000 µF, and C3 = 8.000 µF), and round your answer to three

decimal places. (8.833µF)

A learner mass(75 kg) is standing next to the road and sees a stationary car (mass 25kgl in front of her.she decides to run towards the car and jump on it and roll down the street.The learner accelerates at a constant acceleration of 2m/s calculate the car'a velocity just after the learner jumped on it

A current of 10 A flows through a conductor and 10w is dissapted,what p.d exist across the end of the conductor

Factors affecting pressure in liquids

1 kg of nitrogen (molar mass 28 kg/kmol) is compressed reversibly and isothermally from 1.01 bar , 20℃ to 4.2 bar. Calculate the work done and the heat flow during the process. Assume nitrogen to be a perfect gas.