1) Students are comparing mineral samples, and they are stumped. Eli suggested they calculate the density of the mineral since it is a property unique to any pure substance. To calculate density the students had to record two important measurements. First they used the balance to measure the mass of the mineral. What was the purpose of the graduated cylinder?
A) They used water displacement to find the volume of the mineral sample.
B) They used water displacement to calculate the weight of the mineral sample.
C) The students wanted to see if the mineral would float. That helps them figure density.
D) Because they could not measure the sample with a ruler, they had to find the mass using water displacement.

CAN SOMEONE PLEASE HELP ME!!

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Which two particles are found in the center of an atom