Which one of these tips for power walking from the unit is NOT correct: Options:

A. Posture: Stand tall, with your shoulders back.

B. Arms: Keep your arms bent. Pump your arms to help you walk with power.

C. Hands: Make a fist

D. Feet: Land heel first, roll through the foot, and then push off from the ball of your foot.

E. Breathing: Maintain regular and steady breathing.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

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.)