cube group Same volume Different quality Physics experiment teaching apparatus free shipping rice cooker dark purple

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and the remanence is also 460mT

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cube group Same volume Different quality Physics experiment teaching apparatus free shipping rice cooker dark purplecube group Same volume Different quality Physics experiment teaching apparatus free shipping The cube group consists of six different materials (aluminum, zinc, lead, copper, brass and iron), which are composed of three different specifications: 10 * 10 * 10 mm, 20 * 20 * 20 m and 20 * 30 * 10 mm. It is used to measure the density of an object and determine the volume of an object on the premise of knowing the density of an object, so as to calculate