# Yahoo Web Search

1. ### A child is rolling 24 3 cm of clay into the shape of a cylinder. The length of the cylinder is increasing at a rate of 0.30 cm /s. ?

I assume you meant 24 cm ^3 of clay -->  call that V.  THe volume fo the cylinder must be constant as long.../(pi*l)) so dr/dt = - sqrt(V/(pi*l))/(2*l) dl/dt = -sqrt(24/(pi*9))/(2*9) *0.3 cm /s = -0.05 cm /s

1 Answers · Science & Mathematics · 09/04/2020

2. ### A green laser with a wavelength of 5.32x10^-7m is shone on a diffraction grating with 2700 lines/ cm . Screen is 35m from diffraction grating.?

...5.03m! Distance between slits (lines) is d = 1/2700 cm = 3.7037*10^-4cm =  3.7037*10^-6m. For the final answer this should be ...

1 Answers · Science & Mathematics · 12/06/2020

3. ### In triangle ABC AB is 20 cm , B is 90 degrees and angle C is 60 degrees. What is the length of BC in cm to the nearest whole cm .?

...opposite C=60°, B = 90; Find a to nearest integer value of cms ;Clearly, A = 30°;BC = a;a/sinA = b/sinB = c...

2 Answers · Science & Mathematics · 08/10/2020

4. ### A cylindrical roll of sod is being unrolled such that its volume is decreasing at a rate of 2500 cm ^3/s. If the length of the roll is ?

V= π*r^2*h, h= 45 cm dV/dt= 90πr*dr/dt 2500= 90π*12.5*dr/dt dr/dt= 250/(112.5π)≈ 0.7074 cm /s

1 Answers · Science & Mathematics · 31/03/2020

5. ### If I swing a ball from a 68.0 cm string in a horizontal circle over my head. Suppose the ball has a mass of 185 g, and during their motion ?

@amy's hints are sound. vertically, T*sinΘ = m*g T = 0.185kg * 9.81m/s² / sin13.0º = 8.07 N horizontally, T*cosΘ = mω²r = mω²LcosΘ ω² = T / mL = 8.07N / (0.185kg * 0.680m) = 64.1...

2 Answers · Science & Mathematics · 30/10/2020

6. ### Suppose that 4 J of work is needed to stretch a spring from its natural length of 26 cm to a length of 43 cm .?

Try this on for size.

1 Answers · Science & Mathematics · 15/06/2020

7. ### In the figure, a 120 g ball on a 58.0 cm rope is swung in a vertical circle about a point 245 cm  ?

minimum speed such that g = v²/r v = √(gr) = √(9.81m/s² * 0.580m) = 2.39 m/s time to fall from h = (2.45 + 0.58)m = 3.03 m t = √(2h / g) = √(2 * 3.03m / 9.81m/s²) = 0.786 s distance to right x = v*t = 1.87 m If you find this helpful, please select Favorite Answer!

1 Answers · Science & Mathematics · 30/10/2020

8. ### Calculus Question?

Circle => x cm Square => 700 - x cm Hence, 2πr = x so, r = x/2π =>...x/2π - 87.5 + x/8 = 0....at stationary value => x = 700π/(π + 4) i.e. x = 308 cm ....for the circle and 392 cm for the square :)>

2 Answers · Science & Mathematics · 17/04/2020

area of portrait = 20 * 12 = 240 cm ^2 area of border = 1/3 * area of portrait = 1/3 * 240 = 80 cm ^2 Now we have...

3 Answers · Science & Mathematics · 06/04/2020

10. ### Physics question ?

15 cm rise means that's a HUGE clock. Assume the mass of the...

1 Answers · Science & Mathematics · 20/08/2020