# Yahoo Web Search

1. ### A concave cosmetic mirror has a focal length of 38 cm . A 3.0- cm -long mascara brush is held upright 19 cm from the mirror.?

...v 1 / v = 1 / f - 1 / u 1 / v = 1 / 38 - 1 / 19 = (1 - 2) / 38 = - 1 / 38 v = - 38 cm The image distance is negative —> the image is virtual, ...

1 Answers · Science & Mathematics · 19/11/2020

2. ### The candle is 3.2 cm from the cutout; how far is the candle from the wall?

"compact" implies "point-like"; use similar triangles 3.2cm / 8.2cm = d / 16cm d = 6.2 cm

2 Answers · Science & Mathematics · 23/11/2020

3. ### Two parallel plates, each having area A = 2291 cm ?

1) By C = ɛA/d =>C = [8.85 × 10^−12 x 2291 x 10^-4]/[0.46 x 10^-2] =>C = 440.77 x 10^-12 F Now by Q = CV =>Q = 440.77 x 10^-12 x 6  =>Q = 2.64 x 10^-9 C 2) By U = 1/2CV^2 =>U = 1/2 x 440.77 x 10...

2 Answers · Science & Mathematics · 12/11/2020

4. ### How long (in ns) does it take light incident perpendicular to the glass to pass through this 8.6- cm -thick sandwich?

Solution in image.

2 Answers · Science & Mathematics · 15/11/2020

5. ### An octopus uses one sucker of diameter 2.54 cm on each of the two shells of a clam in an attempt to pull the shells apart. ?

Ptot = Patm + ρgh and A = πr² so max. force is F = PA = (Patm + ρgh)πr² Just stick values in. (If you weren't Anonymous I'd have done the whole thing, but you could be a tme-waster.)

1 Answers · Science & Mathematics · 31/10/2020

6. ### Two objects attract each other with a gravitational force of magnitude 1.01 10^-8 N when separated by 19.9 cm . ?

1.01 10^-8 N ?? is that 1.01x10^-8 N F = G m₁m₂/r² = 1.01e-8 (6.674e-11) m₁m₂/(0.199)² = 1.01e-8 m₁ + m₂ = 5.02 two eq is two unknowns m₁ = 5.02 –  m₂ (6.674e-11) m₂(5.02...

2 Answers · Science & Mathematics · 31/10/2020

7. ### A plastic ball attached to a spring moves in simple harmonic motion. The amplitude of the ball's motion is 12.5 cm .?

½kA² = ½*6*0.125² = 3/64 3/64 = ½kx² + ½mV² =  ½*6*(0.0625)² + ½*m*0.296² = 3/64 3/64 - ½*6*(0.0625)² = ½*m*0.296² 2*[3/64 - ...

1 Answers · Science & Mathematics · 05/11/2020

8. ### A solid insulating sphere of radius a = 3.4 cm is fixed at the origin of a co-ordinate system as shown?

Solution in image.

1 Answers · Science & Mathematics · 10/11/2020

9. ### Lens Physics Question?

...value for "v" to get 1/f = 1/9 - 1/13.5 1/f = 3/27 - 2/27 = 1/27 f = 27 cm B) height of the image hi/ho = - v/u hi = 2.90 * 13.5/ 9 = 4.35 cm C...

1 Answers · Science & Mathematics · 17/11/2020

10. ### Which of these wrestlers of all time are/were better overall?

... was, he doesn't have half the in-ring resume of Benoit. CM Punk or Austin Aries: I'd argue Aries...

1 Answers · Sports · 04/11/2020