a body initially moving at 25ms-1 in 24 seconds accelerates uniformly at a velocity of 80ms-1 in 10 seconds. it then maintains a constant velocity for 50 seconds before going to in 16 seconds. sketch a velocity time graph for the body and use it to determine the total distance travelled and the acceleration in each section of its journey.

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .