Round the following to the numbers of sig figs shown in parentheses. (1 point each) . a. 152.654 meters (four) b. 0.001983 meter (two) c. 3456 meters (two)

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

The achilles tendon connects the muscles in your calf to the back of your foot. when you are sprinting, your achilles tendon alternately stretches, as you bring your weight down onto your forward foot, and contracts to push you off the ground. a 70 kg runner has an achilles tendon that is 15 cm long and has a cross-section area of 110 mm2 typical values for a person of this size. part a by how much will the runner's achilles tendon stretch if theforce on it is 8.0 times his weight? young's modulus for tendor is 0.15*1010n/m2. express your answer to two significant figures and include the appropriate units. part b what fraction of the tendon's length does this correspond.