The velocity of a particle moving along the x-axis varies in time according to the expression vx(t) = (40 – 5 t2) m/s, where t is in

seconds.

Find the average acceleration in the time interval t=0 to t=2.0s.

Determine the acceleration at t = 2.0 s.

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.

The energy released by a nuclear fusion reaction is produced when