Recent content by gnome222

(n-1)! = (x2 + x)( (n/2)! (n-2/2)! Any idea how to solve this? I tried to solve for x but got stuck. Could you multiply out the factorials?

numbers 2, 6, 20, 70, 252

I am trying to find the equation to predict the next middle number in pascal's triangle. By middle number I mean in each row that has odd number of numbers the middle number of that row. So for example row 6 which has 1,6,15,20( middle number), 15,6,1. I am trying to find that middle number, but...

Well, ok so you have one liter of water and you want to raise it by 20 kcal. The thing is that i don't know how would you go about doing that.

Suppose there is beaker filled with 1L of water. EDIT: You want to raise the temperature of this beaker by 20kcal. The thing that I don't understand is how would you go about doing so. Like one cal is energy required to raise one gram of water by one celsius. But what would you use to raise...

o ok, but under the conditions described what would be time?

yes

<< Moderator Note -- thread moved to the HH forums >> [/color] a pitcher throws a 1.5kg baseball with speed 25m/s. it hits the bat and return in opposite direction with same speed. the force that bat exerted on ball is 50N. For how long was the bat touching(in contact) the ball? I used: delat t...

OK, o fo m lab I mesure the frequency of the constant velocity car. To do it I took the number of marks (ticks on the ticker tape ) and divided it by 3 s( that is for how long my car went) But the thing i don't know what symbol to use for the ticks, Like for grams you use (g), what do you use...

I used a ticker to measure to measure the acceleration of falling object. And and now I am writing report about it and the problem is what symbol is used for the marks on the ticker tape? Like for grams (g). What would you use for marks(?) ?

well, i got a car with constant velocity and let it run for three seconds with ticker tape attached to it. Then i got a 1 gram mass and throw it from 2 meters , 1.75m, 1.5m,1.25m,1 m with ticker tape attached to it. Then i took the frequency of the constant velocity car and found the...

I used a ticker to measure to measure the acceleration of falling object. And and now I am writing report about it and the problem is what symbol is used for the marks on the ticker tape? Like for grams (g). What would you use for marks(?) ?

I mean the error in trials. The .1 g. Or it is just the precission of their instrument by which that are measuring.

Hmmm. So how would you calculate the error? Thanks for response.

This is the example that i got. how would you calculate Δmave = (mmax – mmin)/2 for this particular example. Like, i can't figure out where they got the max and min from.thanks