# Posts by beckii

Total # Posts: 13

**physics: BOB or DRWLS follow up question**

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?

*November 21, 2007*

**physics**

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i got the answer to be 13062.5 N. i don't think that's right...

*November 21, 2007*

**phsycs**

8. What average force is needed to accelerate a 7.00-gram pellet from rest to 125 m/s over a distance of 0.800 m along the barrel of a rifle?

*November 19, 2007*

**calc**

hydrogen is being pumped into a spherical balloon at the rate of 250 cubic inches per minute. in a and b, you must provide an equation with their proper numerical factors when showing the relationships inquired A) write an equation showing the relationship between the rates at...

*November 15, 2007*

**precal**

i have a bunch of sunrise points, and i have to make a cosine function for it. what assumptions must be made?

*November 14, 2007*

**physics**

Q2. A box rests on the (frictionless) bed of a truck. The truck driver starts the truck and accelerates forward. The box immediately starts to slide toward the rear of the truck. Discuss the motion of the box, in terms of Newton’s laws, as seen (a) by Mary standing on the...

*November 14, 2007*

**phsycis**

Why do two objects of different mass and dropped from the same height hit the ground at the same time?

*November 11, 2007*

**history**

"roman catholicism had won the hearts, spirits, and tithes of the overhwelming majority of the population of western and central europe." i don't understand what this sentence means. please explain?

*November 10, 2007*

**math**

i am having serious optimization problems. i don't get it!!! plz help. a 216-m^2 rectangular pea patch is to be enclosed by a fence and divided into two equal parts by another fence parallel to one of the sides. what dimensions for the outer rectangle will require the ...

*November 5, 2007*

**physics**

what is the initial velocity (Vyo) of a projectile launched horizontally? why? i know that it is 0 m/s, but i don't know why/how to explain it.

*November 3, 2007*

**physics**

how do we use indirect measurements in the real world

*October 28, 2007*

**english**

i need help analyzing this poem by robert frost. what is the theme? emotions? and is the meaning that man is trying to control nature or fix it? THE AIM WAS SONG Before man came to blow it right The wind once blew itself untaught, And did its loudest day and night In any rough...

*October 24, 2007*

**chem**

how much water would you need to add to 20.0 mL of 2.0 M NaCl to make a 0.10 M solution? try the formula c1V1 = c2V2 (where c1 is the initial concentration, V1 is the initial volume, c2 is the diluted concentration and V2 is volume you are trying to find) when you have found ...

*May 22, 2007*

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