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1. ### 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

2. ### A 9.35 kg block is being lowered down a ramp, inclined at θ = 39 degrees, by the 4.05 kg pulley. The pulley has a radius of 45.0 cm  ?

Answer: a = 5.07 m/s² What accelerates the block is its weight, more precisely the component of weight in direction of slope F = mg sin θ What opposes this force is the inertia of the block plus inertia of the pulley. Problem...

2 Answers · Science & Mathematics · 27/11/2020

3. ### 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

4. ### Find the wavelength of light used if the 2nd order minimum is located 21cm from the central maximum on a screen 90cm away. The separation?

Treating 90 cm as "distant" y ≈ (n+½)λD / d 0.21 m ≈ (2+½)*λ*0.90m / 6e-6m λ ≈ 5.6e-7 m = 560 nm

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

5. ### Physics question conservation of energy?

...block is v m/s when the spring expands to a compression of only 2.20 cm , by the law of energy conservation: =>PE(i) of the spring = PE(of spring...

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

6. ### Cylinder capacity 4.25 L, cylinder diameter of 13 what is the height of the cylinder?

Let height of the cylinder =  h cm   and  R = Radius of the Cylinder Capacity of the...h  =  4250 => h  =  4250 divided by π (6.5)²   =   32.02 cm i.e.  =  32 cm .............. Answer

2 Answers · Science & Mathematics · 09/11/2020

.../AB² = 2/3 RS = AB√(2/3) = 18√(2/3) = 6√6 cm = 14.7cm approx.

3 Answers · Science & Mathematics · 16/11/2020

8. ### Physics Grade 10 Need urgent help  ?

...just indicating the image is real} =>di = [8 x 4.5]/6 =>di = 6 cm b)  By m = hi/ho = 4.5/6 = 0.75 c) For concave mirror, this condition...

1 Answers · Science & Mathematics · 06/11/2020

9. ### Hi I need help?

...and w = 8 and l = 9 The original box had dimensions of 7 cm by 8 cm by 9 cm .

5 Answers · Science & Mathematics · 09/11/2020

10. ### Physics questions center of mass?

...order for the missing ¼ of the pizza to "pull" the CM of the uneaten part to (0, 0), that missing part must have a CM at 3...

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