Energy Transformations You will be given a transformation in words. You will record what object produces tha transformation. Remember that there are many correct answers. = 1. Electrical -> sound = 2. Electrical -> mechanical 3. Chemical -> mechanical = 4. Nuclear -> electrical 5. Chemical -> thermal = 6. Thermal -> mechanical = 7. Electrical -> radiant = 8. Chemical -> thermal = 9. Gravitational -> electrical = 10. Radiant -> electric = =

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?