Which object has the greatest inertia?
(1) a 15-kg mass traveling at 5.0 m/s
(2) a 10.-kg mass traveling at 10. m/s
(3) a 10.-kg mass traveling at 5.0 m/s
(4) a 5.0-kg mass traveling at 15 m/s

If a substance cannot be physically separated into component parts, it is likely to be answers a mixture a pure substance an alloy a heterogeneous mixture

A60-gram sample of radioactive isotope is measured after two half-lives have passed. what pair of percentages describe the sample after two-half lives? a.) 50% unchanged and 50% stable b.) 25% unchanged and 75% stable c.) 12.5% unchanged and 87.5% stable d.) 75% unchanged and 25% stable

Consider three resistors with unequal resistances connected in parallel to a battery. which of the following statements are true? check all that apply: the current flowing through each of the resistors is the same and is equal to the current supplied by the battery. the voltage across each of the resistors is the same and is equal in magnitude to the voltage of the battery. the algebraic sum of the currents flowing through each of the three resistors is equal to the current supplied by the battery. the algebraic sum of the voltages across the three resistors is equal to the voltage supplied by the battery. the equivalent resistance of the combination of resistors is greater than the resistance of any one of the three resistors. the equivalent resistance of the combination of resistors is less than the resistance of any one of the three resistors.