The initial energy stored in the circuit in Fig. 8.12 is zero. At != 0, a dc current source of 24 mA is
applied to the circuit The value of the resistor is
400 $2.
a) What is the initial value of i?
b) What is the initial value of dir/di?
c) What are the roots of the characteristic equation?
d) What is the numerical expression for if(t) when
1
+ 202

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

Who was the first scientist to measure speed as distance over time?

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".