Is this a chemical or physical property chalk forms bubbles when put into vinegar

A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second? A. 5.1 meters B. 9.8 meters C. 25 meters D. 15 meters

When performing Tai Chi, The breathing technique utilized is called "Belly Breathing" True or False

1 give reason A. melting of snow can both be a desirable and undesirable change b. appearance of hailey comet once every 72 year is a periodic change

A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a speed of 0.550 m/s. The total mass of the sled, man, and rock is 96.5 kg. The mass of the rock is 0.

An object's weight is dependent upon its location in the universe. Why is this true? A. This is true because gravitational force is the magnitude of weight acting on an object's mass and since weight varies in different places in the universe, both

Suppose a car is moving in a straight line and steadily increases its speed. It moves from 35 km/h to 40 km/h the first second and from 40 km/h to 45 km/h the next second. What is the car acceleration?

Why can crevasses in glaciers only be 50 meters deep? A. Plastic flow occurs below that depth. B. Glaciers cannot be thicker that 50 Meters. C. Surges prevent plastic flow below that depth. D. Basal slip occurs below that depth.

What are the changes to Earth's surface that occur as a result of plate movement

Two spaceships are approaching each other. (a) If the speed of each is 0.9c relative to Earth, what is the speed of one relative to the other?

Mechanical work is done an object when a force displaces the object in the direction of the force or a component of the force. True or false?