# Posts by Aparna

Total # Posts: 31

**Physics**

A spherical body of diameter 4cm falls freely through air with the velocity of 0.5m/s. The coefficient of velocity of air is 2*10^-5Nm/m^2.find the viscous force acting on the body.

**Physics**

Find the terminal velocity of a raindrop of diameter 3mm when it fall through atmospheric air (Appointment and is 249.7m/s)

**chemistry**

my developing solvent is hexane toluene acetic acid(5:5:1)nd my samples rf nd impurity rf is very close,my spots r not separating properly,so which hexane should hav to be used?n hexane or hexane fraction?is only hexane affect or other factor is there?

**physics**

A pistol of mass 2 kg fires a bullet of mass 50 g. The bullet strikes a stationary block of mass 1 2 kg. If the block, with the bullet embedded in it, moves with a velocity of 4 m/s, the recoil velocity of the pistol will be (Ignore friction and air resistance)

**Chinese**

what to say egg and my favorite in chinese please replay me fast

**8th grade math**

we have not learn like this fraction please help me to teach this i don't no any from here

**CHEMISTRY**

The data below has been taken for the reaction of a dye with the hydroxide ion. The reaction was performed at two different hydroxide ion concentrations while the dye concentration was kept constant. What is the rate law? [OH─] = 0.10 M [OH─] = 0.20 M t (min) Abs ...

**math ALG 2!**

x+(x-14)=300 2x-14=300 2x=314 x=157

**math ALG 2!**

4x=x+78 4(20)=20+78 80=98 no i did guess and check 4(26)=26+78 104=104

**Calc**

f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?

**algebra**

3(x-2/3)=-10 (x-2/3)=-10/3 x=-8/3

**Math**

60 degrees

**algebra**

-.1x-1>.4 -.1x>1.4 x<14 dividing/multiplying negatives switches the sign

**Calc**

f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?

**never mind! figured it out**

never mind i figured it out

**Calc**

range of f(x)= 5^(2x^2-1)^(1/2) i know that the domain of the inverse would be the range of this and i've found the inverse but it has natural logs in it and i don't know how to find the domain with that.. i feel like i'm missing something simple

**math**

the pie is 360 degrees divide that by 10 peices it gives you 36 degrees per slice 3 slices left times 36 degrees is 108 degrees

**Calc**

thank youu

**Calc**

i found A and B, just checking if they're right. C i can never remember how to do these. D i haven't tried yet but i could probably figure out but i figured since i was putting the rest up i would do it as well

**Calc**

The function f is defined by f(x)= (25-x^2)^(1/2) for -5 less than or = x less than or = 5 A) find f'(x) B) write an equation for the tangent to the graph of f at x=3 C) let g be the function defined by g(x)= (f(x) for -5<or=x<or=-3)and (x+7 for -3<or=x<or=5) D...

**Clueless in calculus**

The function f is defined by f(x)= (25-x^2)^(1/2) for -5 less than or = x less than or = 5 A) find f'(x) B) write an equation for the tangent to the graph of f at x=3 C) let g be the function defined by g(x)= (f(x) for -5<or=x<or=-3)and (x+7 for -3<or=x<or=5) D...

**Let f be the function be defined by f(x)=5^((2x^2)**

Let f be the function be defined by f(x)=5^((2x^2)-1)^(1/2) find the range of f without using a calculator

**Chemistry**

12, because there is 1 mole of c6h12o6 and 2 moles of o2 so you have a 1:2 ratio

**Calc**

they drew a diagram for it and Q is actually on the left side of the graph making the line L an upward slant, and yes i meant "write"

**Calc**

Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find the x coordinate of point Q B) right an equation for line L C) suppose the graph above were a hill (measured in feet). There is a 50 foot tree growing vertically at the top of the hill. Does a spot light...

**Calc**

A particle moves along the x-axis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3 - 3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is moving to the left. ...

**Ap calc.. Dying!! Please help!**

Given the curve x^2-xy+y^2=9 A) write a general expression for the slope of the curve. B) find the coordinates of the points on the curve where the tangents are vertical C) at the point (0,3) find the rate of change in the slope of the curve with respect to x I don't even ...

**Physics**

A hard ball dropped from a height of 1 m in earth’s gravitational field bounces to a height of 95 cm. What will be the total distance traversed by the ball?

**Physics**

What is the scientific principle involved in unmanned level crossing?

**Physics**

What is the scientific principle involved in unmanned level crossing?

**physical science**

(A)Speed = 8m/s (B)u=8m/s v=0m/s a=g=9.8m/s2 Use v=u-gt 0=8-9.8t 9.8t=8 t=8/9.8 But this is the time required by the tennis ball to reach the highest point. Time taken by the ball to return to the starting point=2t =2*8/9.8 =8/4.9 =1.632s

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