Una masa que pesa 10 lb está suspendida de un resorte de

2 pies. el resorte es estirado 8 pulg y luego se retira la masa.

a) encuentre el trabajo realizado al estirar el resorte

hasta una longitud de 3 pies.

b) encuentre el trabajo realizado para estirar el resorte desde

una longitud de 4 pies hasta una longitud de 5 pies.

State the right hand rule of the direction of magnetic field in a conductor carrying current

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.