Which of the following is a metal?

Calcium (Ca)

Iron (Fe)

Sodium (Na)

all of these

Ball A is dropped from the top of a building of height h at the same instant that ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions, and the speed of A is 5 times that of B.

How is energy related to the change of state represented by the model? Atoms gain energy as a gas changes to a solid. Atoms gain energy as a gas changes to a liquid, Atoms lose energy as a gas changes to a solid.

What does an object have a different weight on the moon than it does on earth

What is the opposite force to pushing off the ground to jump

7. Two liquid density 1100kg/m³ and 850kg/m³are mixed in equal volumes. The mixture is a tank of 3m by 0.4m by 50cm to the brim What is the mass of each liquid

Why does the closed top of a convertible bulge when the car is riding along a highway? Why does the closed top of a convertible bulge when the car is riding along a highway? The air pressure is greater outside the car than inside.

Is a white shirt cooler or warmer in the sunlight?

A stone is thrown vertically upward with a speed of 18.0. (a) How fast is it moving when it reaches a height of 11.0? (b) How long is required to reach this height? For part A) I did: y=11m, g=9.

What object or class of objects makes up most of the solar systemâs mass?

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup