Two liquids are mixed and bubbles form. Is this a chemical or physical change? Explain.

chemical change

Explanation:When the liquids are mixed they cause a chemical change causing them to have a reaction which allows the air particles in the water to join together and form the big bubbles u see

d. platinum would have the greatest temperature increase because it has the lowest specific heat.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft