Aparticle moves along a straight line ox. at a time t(in seconds) the distance x(in metres) from the particle o is given by x=40+12t-t3. how long would the particle travel before coming to rest

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.