aavvas

Write a lab report exploring the process of radioactive decay using a laboratory procedure 

What is the magnitude and direction of the electric field at point C?

A kg mass is pushed against a horizontal spring of force constant on a frictionless air table. The spring is attached to the tabletop, and the mass is not attached to the spring in any way. When the spring has been compressed enough to store of potential energy in it, the mass is suddenly released from rest. (a) Find the greatest speed the mass reaches. When does this occur? (b) What is the greatest acceleration of the mass, and when does it occur?

A proton is traveling horizontally to the right at  .

(a) Find the magnitude and direction of the weakest electric field that can bring the proton uniformly to rest over a distance of 3.20 cm.

(b) How much time does it take for the proton to stop after entering the field?

(c) What minimum field (magnitude and direction) would be needed to stop an electron under the conditions of part (a)?

Very fine smoke particles are suspended in the air. The translational RMS speed of a smoke particle is And the temperature is 301K. Find the mass of a particle.  

A steel casting weighing has an initial temperature of . of water initially at is contained in a perfectly insulated steel tank weighing . The casting is immersed in the water and the system is allowed to come to equilibrium. What is its final temperature? Ignore the effects of expansion or contraction, and assume constant specific heats of for water and for steel.

1. In Exercises 1 and 2, find the equilibrium solutions of the differential equation

specified.

In Exercises 1 and 2, find the equilibrium solutions of the differential equation speci-

fied.

1. dy/dt =y+3/1-y

2.dy/dt = (t^2 -1) (y^2-2) /(y^2-4)