Pelicans tuck their wings and free fail straight down when diving for fish. Suppose a

Principles of General Chemistry 2
Problem 1P The atomic mass of Cl is 35.45 amu, and the atomic mass of A1 is 26.98 amu. What are the masses in grams of 3 mol of A1 atoms and of 2 mol of Cl atoms?

Fundamentals of Physics 10
In Fig. 5-64, a force of magnitude 12 N is applied to a FedEx box of mass m2 " 1.0 kg. The force is directed up a plane tilted by u " 373. The box is connected by a cord to a UPS box of mass m1 " 3.0 kg on the floor. The floor, plane, and pulley are frictionless, and the masses of the pulley and cord

Fundamentals of Physics 10
The space between two concentric conducting spherical shells of radii b ! 1.70 cm and a ! 1.20 cm is filled with a substance of dielectric constant k 23.5. A potential difference V ! 73.0 V is applied across the inner and outer shells. Determine (a) the capacitance of the device, (b) the free charge

BSCS Biology: A Molecular Approach 9
In what ways is photosynthesis important to humans?

BSCS Biology: A Molecular Approach 9
Describe the steps in the Oparin-Haldane hypothesis for the origin of life.

Physics for Scientists and Engineers with Modern Physics 9
Five particles with equal negative charges 2q are placed symmetrically around a circle of radius R. Calculate the electric potential at the center of the circle.

Life-Span Human Development 9
Laura Carstensens socioemotional selectivity theory suggests that adults narrow their social networks with age to better meet their emotional needs. Develop some alternative hypotheses about why elderly adults have smaller social networks than young adults.

Plant Systematics 3
What is the difference between antipetalous, antisepalous, and diplostemonous?