Two straight and infinitely long conductors are on the same plane and are perpendicular to each other, as shown in
figure. The distances are AM = 4.0 cm and QA = 2.0 cm, and the
current strengths i1 = 48 A and i2 = 42 A. The module of
magnetic field vector at point A is from:

What is binding energy and separation energy

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

According to newton’s first law of motion, which force is expected to cause a body to accelerate?