Manny uses 250ml of water for a lab experiment in his physical science class. calculate the amount of heat required for manny to raise the temperature of this water from 20°c to 100°c? water has a specific heat capacity of 4.184 j/g×°c.

What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?