Physics - October 2006

Can you also show work and explain how you got the answer thanks!

I just don't get how you are suppose to solve the problem with 2 unknowns


A foul ball is hit straight up into the air with a speed of about 22 m/s.
(a) How high does it go?
m
(b) How long is it in the air?
s

2006-10-04 12:25:03 · 4 answers · asked by beast 1

2006-10-04 12:18:30 · 7 answers · asked by piti 2

Without increasing the mass.

2006-10-04 11:57:27 · 10 answers · asked by Anonymous

2006-10-04 11:52:04 · 9 answers · asked by MegN 1

Can somebody explain to me the relationship between tire pressure and friction? Specifically, I had a conversation with my professor today regarding an off-road vehicle deflating his tires a bit to lower the tire pressure and give him better grip when rock-climbing. My professor contended that the lower tire pressure did not increase the friction between the tires and the rocks. This makes little pratical sense to me since one would 'just know' that the lower tire pressure would indeed help in the rock climbing.

Please help!!

Thanks!

2006-10-04 11:39:11 · 9 answers · asked by Bumper 1

2006-10-04 11:22:08 · 11 answers · asked by STORMY K 3

From what I understand, electric field (in Newtons per Coulomb or Volts per Metre) is supposed to be an easier way to deal with the electric force between a charged object and a given point.

My question is, does the electric field vary as a function of distance from the charge, just as the force does according to Coulomb's Law?:

F = (q1*q2) / 4*Pi*(epsilon)*(r^2)

Where q1 and q2 are the charges, epsilon is the electric permittivity constant, and r is the distance.

2006-10-04 11:07:27 · 3 answers · asked by frostwizrd 2

Simple answers if possible please!

2006-10-04 11:03:20 · 2 answers · asked by Taylor H 1

and would it be easier to blame someone else?

2006-10-04 10:28:29 · 13 answers · asked by KU 4

This has to do with science and my science test is tomorrow! Oops! lol

2006-10-04 10:20:11 · 3 answers · asked by yowezz20 1

2006-10-04 10:09:01 · 21 answers · asked by simongunning2001 1

What dashboard displays would be needed to measure the average velocity of a car over an extended period of time? How would the calculations be made?

2006-10-04 09:56:56 · 1 answers · asked by Anonymous

2006-10-04 09:44:52 · 2 answers · asked by Dingaling!! 2

Thinking of cliche sci-fi laser guns. How much power (in watts) would it take for a laser beam to pierce through a human skull or sternum in a millisecond or less?

2006-10-04 09:22:27 · 3 answers · asked by Logan 5

Part a of the drawing shows a bucket of water suspended from the pulley of a well; the tension in the rope is 108.0 N. Part b shows the same bucket of water being pulled up from the well at a constant velocity. What is the tension in the rope in part b?

http://i21.photobucket.com/albums/b272/Cajunboiler/buckets.gif

2006-10-04 09:11:08 · 4 answers · asked by Confused 1

I know know how colour gets into colour, becuase of the light reflection, but how do things know what frequency to reflect so we can see the colour?

2006-10-04 09:11:00 · 12 answers · asked by Anonymous

Can we create a (toy) balloon of normal strechable rubber that could last forever?

2006-10-04 09:00:23 · 4 answers · asked by Anonymous

If I have two bottles, 1 with all the air sucked out and 1 with more air pumped in, which 1 is at a higher pressure and which 1 is at a lower pressure in comparison with the surrounding normal air pressure?

2006-10-04 08:46:04 · 4 answers · asked by benabean87 2

You are driving a 2330 kg car at a constant speed of 20.5 m/s along an icy, but straight and level road. While approaching a traffic light, it turns red. You slam on the breaks. Your wheels lock, the tires begin skidding, and the car slites to a halt in a distance of 65.0 m. What is the coefficeint of sliding friction between your tires and the road?

Thank you for any insight into this problem.

2006-10-04 08:39:01 · 3 answers · asked by justinegunderson 1

2006-10-04 08:22:53 · 13 answers · asked by Anonymous

What is the acceleration due to gravity near its surface?

PLEASE SHOW WORK. THANK YOU

2006-10-04 07:50:43 · 5 answers · asked by bulldawg771 1

A 6.5 kg particle starts from rest a x = o and moves under the influence of a single force
Fx = 6.1 + 7.6x - 1.1x^2, and Fx is n Newtons and x is in meters.

Find the power delivered to the particle when it is at x = 2.2m. answer in W.

Find the work done by this force on the particle as the particle moves from x = o m to x = 2.2m. answer in J.

Keep getting different answers. Would the work done equal the change in kinetic energy? Then how would I find the power delivered?

2006-10-04 07:20:52 · 2 answers · asked by Dee 4

Ok I have a question...you don't need to answer but just help me understand it please; it's confusing and I'm wasting too much:

A destroyer is moving due north at 8.5 metres/second when a depth charge is catapulted off the side of the ship in a direction (North 35 degrees East) relative to the deck of the ship. What is the velocity of the depth charge relative to the water if the speed relative to the deck is 28 metres/second?

Ok, what the heck do they mean by destroyer? Also, they want the velocity of the depth charge...what's a depth charge?
If you guys could please just help explain this question, you'd be a really big help. Thanks

2006-10-04 07:11:32 · 4 answers · asked by A 2

A particle starting from rest moves with constat acceleration 'a' and attains a velocity 'v' , then moves with uniform velocity 'v' for certain time and then decelerates at a constant rate 'b'. if 't' is the total time of motion, find the value of 'v' (in terms of a & b),so that 't' is minimum.

2006-10-04 06:27:15 · 2 answers · asked by Anonymous

2006-10-04 05:48:45 · 6 answers · asked by Anonymous

2006-10-04 05:46:48 · 13 answers · asked by twin city 1

In terms of science...please

2006-10-04 05:46:15 · 9 answers · asked by Helix 1

2006-10-04 05:39:02 · 5 answers · asked by lizjunocom 1

2006-10-04 05:26:00 · 7 answers · asked by lissie 2

A coin is placed on a record that is rotating at 33.3 rpm. If the coefficient of static friction between the coin and the record is 0.2, how far from the center of the record can the coin be placed without having it slip off?

2006-10-04 05:25:15 · 4 answers · asked by websterpirate1 1