B) ¿Con qué experimentos o instrumentos se calibrarán los patrones distribuidos alrededor del mundo?

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?

3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.