How do you determine the number of significant digits

How would the weight of a 7-kilogram concrete block compared to the weight of a 7-kilogram metal sphere? A. the block would weigh more B. the sphere would weigh more C. the block and sphere would have the same weight D.

How much 8 grams will weigh after a physical change

A railroad car of mass 2,000 kg traveling at a velocity v = 10 m/s is stopped at the end of the tracks by a spring-damper system, as shown in fig. 1. if the stiffness of the spring is k = 80 n/mm and the damping constant is c = 20 n-s/mm, determine:

Electromagnetic waves have linear momentum as well as energy. What does this imply about electromagnetic waves?

What color dose white vinegar change red cabbage juice into

Water is a compound. O A. True B. False

How do air quality scientists ensure the air is cleaned? What steps do they take?

Is a mirrors surface opaque or transparent or translucent?

Sound waves can combine to become bigger or smaller true or false

Archimedes supposedly was asked to determine whether a crown made for the king consisted of pure gold (density of gold is 19.3 * 103 kg/m3). According to legend, he solved this problem by weighing the crown first in air and then in water.