which is a correct step in scientific experiment involving acids and bases? Mixing two acids to form a neutral solution. using an indicator to measure the hydrogen ion concentration of a solution. Pouring acid into an indicator to measure the pH of the indicator. Dissolving an indicator is an acidic solution to increase its pH

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?