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Canada-0-COMPASSES ไดเรกทอรีที่ บริษัท
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ข่าว บริษัท :
- What is the circumference of a circle that has radius #7cm#
About 1500 years ago, a Chinese mathematician named Zu Chongzhi (祖沖之) calculated #pi# to approximately #7# decimal places and identified two useful rational approximations One is #22 7#, which is common in use and the other is #355 113 ~~ 3 1415929#, which is less well known but very accurate for the number of digits you have to remember
- What is the circumference of the sun in meters? | Socratic
4376246000 meters The equatorial diameter of the Sun = 1392684000 meters The circumference of the solar disc is nearly the circumference of the Sun;s equator = # (pi) ( diameter ) = 4376246000 meters
- Answers created by Tom M. - Socratic
An aircraft lands and brakes, slowing from 250 m s to 5 m s in 30 secs What is its acceleration? How do you factor #- 6t - 16+ t ^ { 2}#? If we start with Q milligrams of radium, the amount (q) remaining after T years is given by q=Q (2)^ (-T 1600) Express T in terms of q and Q? How much kinetic energy is lost in the collision?
- An object with a mass of # 3 # #kg# is lying on a surface . . . - Socratic
An object with a mass of # 3 # #kg# is lying on a surface and is compressing a horizontal spring by #10 # #cm# If the spring's constant is # 9# #kgs^-2#, what is the minimum value of the surface's coefficient of static friction?
- A photographic slide is 35 mm wide and 22 mm high. The . . . - Socratic
Projected image is 105 cm When a photographic slide is projected, its dimension increase proportionately e ratio between width and height remains same As height has grown from 22 mm to 66 cm (or 660 mm), the ratio is 22:660 or 1:30 Hence 35 of the width of slide, when projected becomes 35xx30=1050 mm or 105 cm
- What is the density of a #200*g# mass of material, that has . . . - Socratic
rho_"density"=5 0*g*mL^-1 By definition, "density" is the "mass" per unit "volume", and so we take the quotient rho_"density"= (200*g) (40*cm^3)=5 0*g*cm^-3-=5 0*g*mL^-1 Since we are in the chemistry section often, in order to deliver a precise mass of liquid reagent, we measure the volume of the reagent and add this volume to the reaction mixture Note also that 1*mL-=1*cm^3
- How quickly is her radius growing (in cm day) when she cant fit . . .
Consider a spherical cow (!) that is consuming a GREAT deal of hay She is fattening herself up at a rate of 200 liters day How quickly is her radius growing (in cm day) when she can't fit through the circular stall door (which is 2 meters wide)? Calculus
- We have a trapeze ABCD AD=big base, BC= little base m ( lt;BAC . . . - Socratic
midle line = 12 cm There are many possible solutions Which should be described in detail?
- What mass is contained in 75 cm^3 of a substance whose . . . - Socratic
Notice how the units match up: "620 g" "cm"^3 vs "75 cm"^3 All you have to do is multiply by the given volume and you will cancel out the volume units ("cm"^3 = "mL") Therefore, you just get: "620 g" cancel ("cm"^3) * "75" cancel ("cm"^3) = color (blue) ("46500 g") Or, you could have used the equation for the density rho as it relates to mass m and volume V rho = m V, and solved for mass m
- If the length of a #49 cm# spring increases to #84 cm# when . . . - Socratic
If the length of a #49 cm# spring increases to #84 cm# when a #5 kg# weight is hanging from it, what is the spring's constant?
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