Num dado instante, uma espira circular de diâmetro 20 cm está sob a influência de um campo magnético uniforme de módulo 0,15 T. Qual é valor do ângulo entre o plano da espira e a direção do campo magnético para o qual o fluxo do campo magnético é nulo?

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver