Objects A, B and C are three insulated, spherical conductors of radii R, 2R and 3R respectively. Originally, A and B have charges of +3 mc whereas C has a charge of -6 mc. Objects A and C are touched and moved apart. Calculate the new charges appears over A, B and C.​

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.

A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.