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related to: SPE

1. ### How many kilocalories of heat are generated when the brakes are used to bring a 1050 kg car to rest from a spe ?

KE gets converted to Q, thermal energy KE = 1/2*m*v^2 Q = KE, assuming complete conversion to thermal energy. Thus Q = 1/2*m*v^2 Data: m:=1050 kg; v:=250/9 meters/sec; Result: Q = 405093...

2 Answers · Science & Mathematics · 16/01/2010

2. ### A student throws a baseball at a large gong 45 m away and hears the sound of the gong 1.45989 s later. The spe ?

first calculate the time it took for sound to travel 45m v = d/t so t = d/v t = 45/330 t = .13636 secs subtract this time from the total time t = 1.45989 - .13636 t = 1.32353 secs last, using the remaining time, find the average velocity of the thrown ball v = d/t v = 45/1.32353 v = 34 m...

3 Answers · Science & Mathematics · 22/12/2012

3. ### When you see a traffic light turn red, you apply the brakes until you come to a stop. Suppose your initial spe ?

You have used all of the allotted 110 characters in the first section and not completed the question. Try again putting the sentence beginning with 'Suppose' in the box marked Now add a little more detail...

2 Answers · Science & Mathematics · 09/03/2010

4. ### A solid bowling ball with a radius of 10.9 cm and a mass of 7.0 kg rolls along a bowling alley at a linear spe ?

You know the linear speed and the mass of the ball so you know the translational kinetic energy, Kt Kt = 1/2 mv^2 = 50.54 J Now to get he rotational energy Kr, you need the moment of inertia of a solid sphere taken aroun its center, and the rotational speed of the ball...

5 Answers · Science & Mathematics · 31/03/2010

5. ### True or false? If you go around a closed track coming back to the same place, during your trip the average spe ?

trulse

4 Answers · Science & Mathematics · 02/09/2012

6. ### If the frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum spe ?

v = A sqrt(k/m) f ~ sqrt(k/m), so if the frequency is doubled, the max speed is doubled.

2 Answers · Science & Mathematics · 24/04/2011

7. ### A force of 7.2 N acting on an 1.0kg object initially at rest moves it through a parallel distance of 2.5m. spe

What is the question?

2 Answers · Science & Mathematics · 25/04/2008

8. ### Water flowing through a garden hose of diameter 2.75 cm fills a 22.0-L bucket in 1.60 min. (a) What is the spe ?

(a) by the amount of time it takes to fill the bucket: 22 L / 96 seconds = 0.23 Liters (equal to 230 cm^3) coming out of the hose every second. We think of the water coming out of the hose as as cylinder with length L, surface area A and volume V...

2 Answers · Science & Mathematics · 30/03/2012

9. ### A car traveling east at 34.8 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his spe ?

Since initial velocity is 34.8 and final velocity is 25 the change is 9.8 and time is 3.5 so magnitude is 9.8/3.5 and direction is to west as slowing down b)can be caluculated by s=ut+1/2at^2

2 Answers · Science & Mathematics · 06/02/2011

10. ### A boat’s speed in still water is 1.65m/s . The boat is to travel directly across a river whose current has spe ?

Note that, after t seconds, the boat travels 1.65t m towards the short and the boat floats 1.05t m down stream. Then, the distance that the boat actually travels is: D = √[(1.65t)^2 + (1.05t)^2] = 1.96t. Therefore, the speed of the boat is: v...

2 Answers · Science & Mathematics · 18/02/2011