The temperature of a body falls from 30°C to 20°C in 5 minutes. The air temperature is 13°C. Find the temperature after a further 5 minutes.

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Decreased sensitivity to an unchanging stimulus is known as

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point