Physics - October 2006

2006-10-10 14:41:28 · 1 answers · asked by steevzemail 1

After dropping from a height 1.50 m onto a
concrete floor, a 50.0-g ball rebounds to a
height of 0.90 m.
a. Find the impulse acting on the ball as it
dropped.
b. Find the impulse acting on the ball on its
rebound.
c. Find the impulse on the ball while it was
in contact with the floor.

2006-10-10 14:34:41 · 2 answers · asked by Kyle B 2

2006-10-10 14:23:59 · 10 answers · asked by Anonymous

2006-10-10 14:22:25 · 3 answers · asked by terry m 1

I know F = m*a but it also is equal to m*g. In this case, m is equal to 68kg and "a" is found by .61/10s. But on the other hand, would it be 68kg * 9.8m/s2?

2006-10-10 14:17:58 · 5 answers · asked by alonso_fan85 1

2006-10-10 14:14:14 · 3 answers · asked by thiru s 1

a car starts at rest and accelerates at a rate of 4 m/s/s. For 8 s. How far will it be from it's starting point?

2006-10-10 14:13:11 · 2 answers · asked by globesk8er999 1

2006-10-10 14:12:36 · 3 answers · asked by terry m 1

?

2006-10-10 14:09:27 · 5 answers · asked by globesk8er999 1

2006-10-10 13:57:47 · 2 answers · asked by terry m 1

2006-10-10 13:49:20 · 7 answers · asked by blastby2000 3

A car weighs 1.15 x 10^4 N. A force of 895 N is used to accelerate the car from rest to 25 m/s. How much time is required for the acceleration? ( ans. 33 secs )

can anyone help how the answer is solved?

2006-10-10 13:42:40 · 3 answers · asked by Bao Wow 3

2006-10-10 13:35:29 · 4 answers · asked by terry m 1

Does anyone here what state glass is in?

2006-10-10 13:26:43 · 1 answers · asked by blastby2000 3

A car traveling at 91.0 km/h approaches the turnoff for a resturant 30.0 meters ahead. If the driver slams on the breaks whith an acceleration of -6.40 m/s^2, what will be her stopping distance? I'm having trouble putting this into a formula and making it work.

2006-10-10 13:16:57 · 4 answers · asked by swimmertommy 1

A flower pot falls off the balcony of a penthouse suite 85 meters above the street. How long does it take to hit the ground?
I tried to rearrange some formulas, but can't seem to make it work out. Please help.

2006-10-10 13:08:41 · 1 answers · asked by swimmertommy 1

Could i find out the distance (just the distance, not the position) from the center of an atom to the electron without using Bohr's model of the atom, nor the strodinger equation?

because i think i came up with an equation that could find the distance (radius) using the energy levels such as ionization energy, work function, or simply hv=E.

and again this has nothing to do with Bohr or Strodinger equations.


P.S i have never seen an equation like the one i came up with.
the electron radius emerges naturally in my equation.

the solutions are the SAME as if I was using the Bohr model of the atom...

2006-10-10 12:49:22 · 4 answers · asked by Anonymous

a sphere that wieghs 100 N rests in the angle formed by two boards 90 degrees apart. the boards are very smooth so the only forces they exert on the sphere are perpendicular to thier surface. find the magnitude of each of these forces.

2006-10-10 12:45:49 · 3 answers · asked by micheal j 1

such as HELP WITH MY HOMEWORK. or they ask a mathematical question so WE could solve it. i hate when peolple do such things.

i mean i want to hear creative ideas.

2006-10-10 12:21:28 · 5 answers · asked by Anonymous

Find the uniform acceleration that will cause an object's spped to change from 32 m/s to 96 m/s in an 8.0 s period.

2006-10-10 12:08:05 · 4 answers · asked by lincolngomes301 2

I thought nothing could go quicker than the speed of light. But what happen when, for example, a car is travelling towards me at x Km/h with light on? The photons reaching my eyes should travel at C + x Km/h ? Am I missing something?

2006-10-10 12:07:50 · 5 answers · asked by Alexis (From France) 1

An ant travels entirely around a circle that has a radius of 5 cm in 45 seconds. What is the displacement of the ant?
A 10pi cm
B 5pi cm
C pi
----cm
9
D 0 cm

2006-10-10 11:47:21 · 2 answers · asked by maconheira 4

A baseball (m=140 g) traveling 32 m/s moves a fielders glove backwards 25 cm when the ball is caught. What was the average force exerted by the ball on the glove

2006-10-10 11:40:23 · 2 answers · asked by Pat M 1

This goes with Newton's Second Law. I need to know how to find mass (M) by converting this equation t2 = 2*(½ at2) / [(mg) / (M + m)] into a form where it turns into slope=*something*, then M = *something*/slope? (Frictionless Airtack on Level plane)

2006-10-10 11:32:25 · 1 answers · asked by thekorean2000 4

i know that you have to find the mass i order to solve this problem, but is it even possible and how??

a box is sliding down an incline of 38.8 degress at constant velocity. What's the coefficient of friction?

Thanks for your help!

2006-10-10 11:28:28 · 5 answers · asked by Anonymous

what is the equasion used to find acceleration?-

2006-10-10 11:24:00 · 8 answers · asked by maconheira 4

we got this in physics and i don't know how to do it. could you try to explain it to me? Thanks.

A box is sliding down a 38.8 degree incline at constant velocity. What is the coefficient of friction??

2006-10-10 11:08:40 · 6 answers · asked by Anonymous

at the top of the circle (whose radius is r), from what minimum height h must it be released?

2006-10-10 10:54:07 · 2 answers · asked by Anonymous

2006-10-10 10:51:09 · 4 answers · asked by Alexis (From France) 1

its the average force exerted by the ballon the glove.

2006-10-10 10:46:43 · 1 answers · asked by Anonymous