A system releases 680 kj of heat and does 150 kj of work on the surroundings. what is the change in internal energy of the system?

The Force of friction between an object and the surface upon which it is sliding is 12N. The weight of the object is 20N. What is the coefficient of kinetic friction? Use equation Ffr=Uk (mg)

What are 3 ways you can save energy on earth day or any day?

A Maga Patalójika roubou a a moeda número um do Tio Patinhas e fugiu em sua vassoura com velocidade de 40m/s. Qual a distância percorrida após 2min?

What is the correct equation kinetic enery

How are contour lines used to indicate elevation

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A long distance runner has an average speed of 4m/s during a race. How far does the runner travel in 20 minutes?

Density is calculated by dividing

The one island species evolved into three different species. This is called?

Find the components of vector M shown in figure 5-7