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What cosmological problem is “dark energy” believed to solve?

How do I determine the pressure in the column BC due to the gas supply? (there is a picture with question when you open)

Question #387d0

Question #afeec

What is the name of #h# in the PlanckEinstein relation, and how do you solve for it?

Question #03eda

How do you calculate the de Broglie wavelength of an electron traveling at #2.0 times 10^8# #m##/s#?

Question #4df84

Question #dc463

Specific heat is a physical property. ls it intensive or extensive?

What is the vertex form of #y= x^2 + 10x +25 #?

Question #a1440

How do you find the value of a given the points (8,2), (5,a) with a distance of 3?

What does bounded above or below mean in precaculus?

Question #58932

What is the equation of the line that goes through #(5,9)# and #( 0, 8)#?

Harry is standing 2 m in front of a flat mirror. How far behind the mirror is his image and what is the magnification of the image?

Question #d6e9e

A coffee maker which draws 13.5 A of current has been left on for 10 minutes. What is the net number of electrons that have passed through it?

Question #6e960

How do you simplify #(2a^2 b^4)(3a^2 b^5) #?

How do you differentiate #f(x)=e^(sin(2/x)# using the chain rule.?

The water level in a plastic pool changed by 8 gallons each hour due to a small hole in the bottom. After 6 hours, the pool contained 132 gallons. How much water was in the pool originally?

#"Ionic bonding always occurs between....?"#

What is the moment of inertia of a pendulum with a mass of #2 kg# that is #12 m# from the pivot?

If A= A1i + A2j + A3k and B= B1i + B2j + B3k. Prove that A.B= A1B1+A2B2+A3B3?

The gas inside of a container exerts #48 Pa# of pressure and is at a temperature of #320 ^o K#. If the pressure in the container changes to #64 Pa# with no change in the container's volume, what is the new temperature of the gas?

There are 10 bicyclists entered in a race. In how many different orders could these 10 bicyclist finish?

How much 25% antifreeze and 50% antifreeze should be combined to give 40 gallons of 30% antifreeze?

Question #c3fe6

An object has a mass of #4 kg#. The object's kinetic energy uniformly changes from #640 KJ# to # 160 KJ# over #t in [0, 12 s]#. What is the average speed of the object?

How do you find the slope of 3x=6y2?

How do you find the domain and range of #y=tan x#?

How are electric and magnetic fields related?

How many electrons in ONE MOLE of carbon dioxide?

Question #271ba

How much calcium hydroxide (#Ca(OH)_2#), in grams, is needed much produce 1.5 L of a 0.25M solution?

If an ideal gas has a pressure of 7.05 atm, a temperature of 379 K, and has a volume of 54.75 L, how many moles of gas are in the sample?

Question #ecdbc

How do you find the domain and range of #(x3) (3x2)#?

How do you solve #abs(5x+2)4=18#?

A magnesium atom reacts to produce a magnesium ion. Which diagram shows a magnesium ion?

How are electric and magnetic fields related?

How does the sun's atmosphere differ from its interior?