wukay

determine length, frequency, and length of string!

find of earth's velocity as it travels around the sun in km/s, magnitude of earth's angular velocity in s-1, magnitude of earth's centripetal acceleration. assume a year has 365 days.

http://session.masteringphysics.com/problemAsset/1...

find speed where t =2s, 4s,13s. I had originally thought it was distance / time,but it turned out to be wrong? help please?

write a null and alternative hypothesis for: we suspect that 25% of experiments to detect salmonella fail even if the bacteria are present in the sample being tested.

Thanks in advance!

15. You carefully study adjacent populations of two very similar meadow mice, one from Woodland

(about 15 km north of Davis), the other from Davis. You want to know whether the Woodland and Davis populations belong to the same biological species or to two different species. You could most

confidently decide this if you could…

a) show that where the ranges of the two mice overlap there is no hybridization.

b) bring the two types of mice into the laboratory to see if they will mate.

c) demonstrate that the natural ranges of the two types of mice are entirely allopatric.

d) show that there are statistically significant coat color differences between the two types.

e) show that the Woodland mice prefer to eat meat, but the Davis mice prefer to eat tofu.

I think the answer should be B because of the biological species concept

Carbon dioxide that is dissolved in seawater leaves the water and goes into the atmosphere when:

A. pressure is released as water upwells to the surface

B. the water warms up near the surface of the ocean.

C. the pressure increases as the water sinks deeper in the ocean.

D. the water cools down near the surface of the ocean.

To form and become strong, hurricanes need:

A. high winds at the tropopause (~12 km high in the atmosphere).

B. warm sea surface temperatures.

C. the Coriolis Effect.

D. high winds near the surface of the ocean.

E. cold sea surface temperatures.

Carbon dioxide that is dissolved in seawater leaves the water and goes into the atmosphere when:

A. pressure is released as water upwells to the surface

B. the water warms up near the surface of the ocean.

C. the pressure increases as the water sinks deeper in the ocean.

D. the water cools down near the surface of the ocean.

Which ocean currently has the highest concentration of CO2 in its surface water that came from humans burning fossil fuels (anthropogenic CO2)?

A. Indian Ocean

B. Pacific Ocean

C. All of them are the same.

D. South Atlantic Ocean

E. North Atlantic Ocean

i know it's not the pacific or that they are all the same...i'm guessing it's D, but i just wanted to be sure! Any help?

assuming that a male's genotype was EeSS, use a punnett square to predict the frequencies of genotypes of the offpsring expect if the female is eess.

grams cobalt(II) chloride hexahydrate: 2.401

moles of it: 0.01009

The theoretical yield (in grams) of product is obtained by assuming that every mole of:

Co[H2O]6Cl2 available as the starting material is converted to product:

trans-[Co(en)2Cl2]Cl. ...the value of theoretical yield of product, I got was 2.88 g ...

but how do you find the mass, in grams, of product, trans-[Co(en)2Cl2]Cl, that i collected?

supose flies were allowed to mate and produce offpsring for two weeks. The population is large, rates of mutation at the body color locus are low, and flies cannot enter or leave the source population.

what equilibrium conditions were not describe and what can you conclude about these conditions?

Many oceanic islands formed by mantle plumes or hot spots sink through time because (pick all that apply)

A. they become hotter and hotter through time.

B. they cool through time as they migrate away from the plume.

C. the plate they form on migrates away from the plume.

D. coral reefs form along their margins.

Sources of terrigenous (lithogenous) sediment to the ocean basins include: (pick all that apply)

A. wind blown dust.

B. turbidity currents.

C. deep sea hydrothermal vents.

D. primary productivity.

E. burrowing organisms.

F. volcanoes.

Earthquakes are most common

A. within the mantle

B. along divergent plate boundaries

C. along convergent plate boundaries

D. within tectonic plates

1. Convection (upwelling and downwelling) within the Earth is driven by [check all that applies]

A. variations in temperature.

B. variations in composition.

C. variations in the rotation speed of earth.

D. variations in the orbit of the moon.

A subduction margin is where: (pick all that apply)

A. oceanic crust gets forced under either oceanic or continental crust.

B. two plates diverge

C. two plates converge

D. continental crust is forming.

E. ocean crust is forming.

CaCO3 (calcium carbonate) in foram shells often records the 18-oxygen concentration of the water in which they grew because:

A. some of the oxygen in their shell comes from O2 in the atmosphere.

B. some of the calcium in the shell comes from the water.

C. They don't preserve the 18-oxygen composition of the water.

D. some of the oxygen in the shell comes from the water.

Thanks a lot in advance!!!

given that Pben is 94.6 torr and Ptoluene is 29.1 torr, where the total vapor pressure is 72 torr.

The answers are Pben 0.85 and Ptol 0.15 but i dont' understand how they came up with the answer. Could someone help with a walk through? Thanks!

what are the mole fractions of benzene andtoluene χben and χtol in both the liquid and vapor phases above a mixture where the totalvapor pressure is Ptot = 82 torr? (Note: you must calculate four separatenumbers)

help!! walk through would be nice!

Csp ice is 2.09 j/gC

Csp water is 4.184 J/gC

Csp vapor is 1.84 J/gC

change of H fusion is 6.01 kj/mol

Change of H vapor is 40.7 kj/mol

they're for my human sexuality class and i would appreciate anything :)