George works for a moving company. He is
paid $1 for every 1,000 Newton-meters of
work. On Thursday, George used 600 Newtons
of force moving a piano 80 meters. It took him
50 minutes to move the piano. How much
should George get paid? How fast did he move
the piano on average?

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.

Why should the wavelength scale of spectroscope be calibrated

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero