A quantidade de uma partícula, varia com o tempo de acordo com a lei: p=(1+5t)ī + (1-10t+5t2)j, em unidades do S. I Determine: a)Entre os instantes t= 4,0s, o impulso da força resultante sobre a partícula.
b) Qual é o valor resultante no instante t=4.0s

Acylindrical specimen of a nickel alloy having an elastic modulus of 207 gpa (30 × 106psi) and an original diameter of 10.2 mm (0.40 in.) experiences only elastic deformation when a tensile load of 8900 n (2000 lbf) is applied. compute the maximum length of the specimen before deformation if the maximum allowable elongation is 0.25 mm (0.010 in.)

Write the correct abbreviation for each metric unit

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.