A projectile (a stale doughnut for instance) is launched with a speed of 50. 0 m/s and an angle of [03] degree s above the horizontal, from the top of a 75. 0m high cliff onto a floor at the base of the cliff.

a. How long (s) does it take the projectile to reach the valley floor?

b. What is the horizontal distance (m) between the base of the cliff and the impact point?

c. What is the (c) vertical (m/s) component of the velocity just before impact?

d. What is the (d) horizontal (m/s) component of the velocity just before impact?

Difference between series and parallel circuits

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 do some scientists and archeologists think that volta was not the first person to build a battery