Ajet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. after traveling 3.1 km , the jet is moving with a speed of 400 m/s. part a what is the jet's acceleration, assuming it to be a constant acceleration? express your answer to two significant figures and include the appropriate units. a a = nothing nothing request answer

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?

If frequency goes down, what happens to wavelength? does it get shorter or longer?