Timed

which statement correctly compares radio waves and microwaves?

radio waves have shorter wavelengths and lower frequencies than microwaves.

radio waves have longer wavelengths and higher frequencies than microwaves.

radio waves have longer wavelengths and lower frequencies than microwaves.

radio waves have shorter wavelengths and higher frequencies than microwaves.

which statement correctly compares infrared light to ultraviolet light? infrared light has a lower frequency and shorter wavelength than ultraviolet light. infrared light has a higher frequency and longer wavelength than ultraviolet light. infrared light has higher radiant energy but a shorter wavelength than ultraviolet light. infrared light has a lower frequency and longer wavelength than ultraviolet light.

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

If y gets smaller as x gets bigger and y have an relationship?

Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas