Astudy is made of the effect of curing temperature on the compressive strength of a certain type of concrete. five concrete specimens are cured at each of four temperatures, and the compressive strength of each specimen is measured (in mpa). based on the data, does the mean strength change with temperature? (show your work).

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)