Iwill mark brainliest 1. ) allena and charissa were discussing whether cl2 is an element or a compound. allena said that it is an element because it has only one type of atom. charissa said that it is a compound because it has more than one atom. who is correct? allena is correct. it is an element because it is only one atom. charissa is correct. it is a compound because it has a two. charissa is correct. it is a compound because it is made of more than one atom. allena is correct. it is an element because it is only made of chlorine atoms.2.) when a block of steel at 90 degrees celsius is placed in a bucket of water at 30 degrees celsius, what happens? the temperature of the steel decreases and the temperature of the water increases. the temperature of the steel increases and the temperature of the water increases. the temperature of the steel decreases and the temperature of the water decreases. the temperature of the steel increases and the temperature of the water decreases.3. ) what law states that energy can neither be created nor destroyed, but it is transformed? law of thermal energylaw of thermonuclear energy law of conservation of energylaw of kinetic energy

What is the role of the ocular lens?

Dinate system, and a charge q = - 2.00 nc is placed s2 10 n> c. (a) what is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to es from parallel to perpendicular? (b) at what absolute temperature t is the average translational kinetic energy 32 kt of a molecule equal to the change in potential energy calculated in part(: abovethistemperature,thermalagitationprevents the dipoles from aligning with the electric field.) placed in a uniform electric field e with magnitude 1.6 * 6 on the positive x-axis at x = 4.00 cm. (a) if a third charge q3 = +6.00 nc is now placed at the point x = 4.00 cm, y = 3.00 cm, find the x- and y-components of the total force exerted on this charge by the other two. (b) find the magnitude and direction of figure p21.62 ll uu 21.55 . torque on a dipole. an electric dipole with dipole moment ps is in a uniform external electric field es. (a) find the orientations of the dipole for which the torque on the dipole is zero. (b) which of the orientations in part (a) is stable, and which is unstable? (hint: consider a small rotation away from the equi- librium position and see what happens.) (c) show that for the stable orientation in part (b), the dipole’s own electric field tends to oppose the external field. 21.62 ..

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?