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1. ### A boat is pulled by two locomotives through a canal of length 1.99 km.?

Use just 1 cable tension and 1/2 the angle, to determine the normal force in the forward direction. (cos...net force in forward direction of 10,117.58N. W = (fd), = 10,117.58 x 1,999m, = 20,225,042.42 joules., or 20.225MJ.

1 Answers · Science & Mathematics · 23/09/2012

2. ### can 99-yr old man generate 1 horsepower?

A healthy 80-yr old can probably do it. 1 hp = 550 ft-lbs per sec. If he weighs 185... at a time. This is more difficult for 99-yr old but not impossible. A 200-lb athlete that runs...

4 Answers · Science & Mathematics · 21/11/2009

3. ### A 1.99 kg book slides 1.09m along a level surface. coefficient of kinetic friction(b/w book and surface)=0.128?

The friction is given by Ff = mu*N = mu*m*g Work is the force times the distance . (Ff in this case)*(1.09m in this case)

2 Answers · Science & Mathematics · 14/05/2011

4. ### Consider the optics bench shown below. The object is a light bulb, set at the 15.2 cm mark on the meterstick.?

Magnification M = -1.96 = -di/do so di = 1.96do also do + di = 99.4 - 15.2 = 84.2 cm so do + 1.96do = 84.2 = 2.96do do = 84.2 / 2.96 = 28.45 cm...

1 Answers · Science & Mathematics · 25/05/2013

5. ### Dimensional Analysis help needed!?

Two ways to do this: 1) type 99 in/s = ? mi/day into google. Result: 135 mi/day. 2) Apply conversion... I don't want and help me get toward the ones I do want. Specifically, "1ft/12in" gets rid of the "in"...

1 Answers · Science & Mathematics · 20/11/2011

6. ### HELP WITH PHYSICS PLEASE!?

1.99 * 10 ^-3 kg /(s*m) = x 1 kg = 1000 grams 1 kg * x = 1.99 * 10^-3 kg 1000 grams/(s*m) Divide by kg x = 1.99 grams...

2 Answers · Science & Mathematics · 07/03/2010

7. ### When a object reaches 99.9 percent of light speed why does the object in its self slow down? ?

There is no threshold at 99.9% of c. See table below. γ is the correction factor... by experiment many times. at 0.1c, 3e7 m/s, γ = 1.005 at 0.5c, 1.5e8 m/s, γ = 1.15 at 0.9c, 2.7e8 m/s, γ...

2 Answers · Science & Mathematics · 18/12/2011

8. ### Find the position of the center of mass?

...10^5 = 7.77 * 10^8 km Check: 7.42 * 10^5 * 1.99*10^30 = 1.47658 * 10^36 7.77 * 10^8 * 1.90*10^27 = 1.4763 * 10^36... correct. I like this method, because I do not have to memorize the center of mass equation, shown...

1 Answers · Science & Mathematics · 26/04/2012

9. ### Simple Harmonic Motion (plz help, promise 10 points)?

1.99 meters?to bend it to the middle of the spring so your talking to the right so how long is the spring this crucial if the spring has 4.99 torque rate. but if it is1.99 meters long meters long . I think...

1 Answers · Science & Mathematics · 24/01/2009

10. ### Could someone show me how to do this formula?

...! ( as G is defined in terms of seconds) doing the (r³/Gm) bit first .. r³ = (2.28*10^11)³ = 1.185*10^34 Gm = 6.67*10^-11 * 1.99*10^30 = 1.327*10^20 .............(note G has 10^-11) r³/...

2 Answers · Science & Mathematics · 03/02/2011