What trends were seen in mendeleev’s periodic table?

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

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

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!