Wednesday

April 16, 2014

April 16, 2014

Number of results: 63

**Physicss**

a) m (9.8+2.3) b) m (9.9 -1.7)
*Wednesday, February 2, 2011 at 7:06pm by Damon*

**Physicss....**

Thank you(((:
*Thursday, December 15, 2011 at 11:13pm by Marie*

**physicss**

12
*Monday, November 1, 2010 at 4:38pm by Nonoo*

**physicss**

12
*Monday, November 1, 2010 at 4:38pm by Nonoo*

**physicss help!**

120
*Wednesday, November 2, 2011 at 5:58pm by Anonymous*

**physicss**

cvv
*Monday, November 1, 2010 at 4:38pm by Anonymous*

**PHYSICSS**

idk
*Sunday, October 3, 2010 at 4:51pm by Anonymous*

**physicss**

434
*Monday, November 1, 2010 at 4:38pm by john*

**physicss**

Noo It was 31 seconed Pls I need a help
*Sunday, October 16, 2011 at 5:07am by saly*

**Physicss **

This looks like a duplicate post. Look for the answer in the thread of one of your other posts.
*Thursday, July 15, 2010 at 2:51pm by drwls*

**physicss**

What average force is required to stop an 1100 kg car in 9.1 s if it is traveling at 83 km/h?
*Monday, November 1, 2010 at 4:38pm by Devon*

**physicss**

an. Electron travels in a circular orbit of radius 0.5 a and frequency of 5.5*10^7hz. Findthe magnetic field produced At center
*Wednesday, April 27, 2011 at 4:12am by A*

**physicss**

an. Electron travels in a circular orbit of radius 0.5 a and frequency of 5.5*10^7hz. Findthe magnetic field produced At center
*Wednesday, April 27, 2011 at 4:13am by A*

**physicss**

A child sits on a swing supported by ropes of length 3.0 m. With what frequency will she need to apply the driving force to maintain swinging?
*Tuesday, December 4, 2012 at 10:44am by jad*

**PHYSICSS...more CLARIFICATION PLZ**

2.5 *10^4/V - 10^3 ]dV from V=1 to V=3 DOn't GET HERE
*Wednesday, November 12, 2008 at 10:42pm by Kimora*

**physicss**

divide the charge by the charge on one electron. This does not change. The information on the positive cork, and distance, is a distractor, ignore it.
*Sunday, November 15, 2009 at 5:12pm by bobpursley*

**Physicss**

a car brakes to a halt in 5 seconds. The position of the car versus time is given by: x = 10t - t^2 a) What is the average speed between 0 s. and 4 s.? Thank you
*Tuesday, September 20, 2011 at 6:12pm by Rafael*

**physicss please help**

Suppose m1 = 9.52 kg, m2 = 11.99 kg and vf = 5.71 m/s. If v1i = 10.1 m/s, what was v2i
*Saturday, April 4, 2009 at 2:00am by cbrown*

**Physicss**

Fast pleaseee Calculate speed of a 50 kg boy travelling on his bike his kinetic e is 1250 J I did v= 2KE/m i got 50? Help
*Thursday, June 20, 2013 at 10:17am by Katherine :))*

**physicss**

A cube with sides each 3cm long has 8 charges of Q = 25nC at each corner. What is the electric potential \Delta V at the center of the cube with respect to infinity, which is defined to have V=0 V?
*Wednesday, October 17, 2012 at 3:41pm by Anthony*

**physicss**

How long will it take a 2.30 x 10^3 kg truck to go from 22.2 m/s to a complete stop if acted on by a force of -1.26 x 10^4 N? what would be its stopping distance?
*Monday, November 2, 2009 at 7:05pm by arriell*

**PHYSICSS.. someone help plz.**

A football is kicked at 15 m/s with an angle of 35 degrees with the ground. How long is it in the air? How far will it land? Can someone help plz... Thanks!
*Monday, December 3, 2007 at 8:59pm by Dan*

**PHYSICSS!!!!!**

Subtract the two vector velocities from one another and divide the difference by 2.00 s to get the vector acceleration. Since acceleration is said to be constant, it will be valid at all t.
*Tuesday, November 4, 2008 at 1:10am by drwls*

**PHYSICSS**

its KE will equal the change in PE 1/2 m 3.4^2=mg*d/sin31.1 solve for d How long? its average velocity is 3.4/2, the distance above, so t=distance/avgvelocity when it returns to bottom, same speed as started, opposite direction.
*Sunday, October 3, 2010 at 4:51pm by bobpursley*

**Physicss....**

4.24 * 4.55 - 2.22 * 3.16 = (4.24+2.22) v
*Thursday, December 15, 2011 at 11:13pm by Damon*

**physicss**

the mass is important for part b. they must have just not included it. but it asks for the power in part b. you need the mass to find the inertial factor(mass/length)
*Friday, May 21, 2010 at 6:22am by Anonymous*

**physicss please help**

M g = (1/2) * (density) V^2 * Area * Cd They tell you to assume the drag coefficient (Cd) is 1. Compute the baseball's area and solve the above equation for V. Then convert m/s to miles per hour. We will be glad to critique your work
*Saturday, February 14, 2009 at 12:42am by drwls*

**PHYSICSS**

[2.5 *10^4/V - 10^3 ]dV is what the P dV integral is. The expression in brackets is P. Do the algebra. Integral PdV is the definition of work.
*Wednesday, November 12, 2008 at 10:42pm by drwls*

**PHYSICSS!!!**

yeah i get the whole equation you're telling me to set up but its gets confusing because there ends up being like X^4 because its X^2 on one side and on the other its (3.72*10^8-X)^2 so either you lose all the X's or you have X^4 can you help with the algebra?
*Wednesday, December 26, 2007 at 12:09am by Rory still need help damon and others*

**physicss**

Potential is scalar, so figure the potential at the center due to one charge, the multiply it by 8. Scalars add. distance to charge is tricky. The diagonal in the cube is 3sqrt3, check that, so distance will be half that.
*Wednesday, October 17, 2012 at 3:41pm by bobpursley*

**Physicss**

Not quite KE = mv^2/2 v = √(2KE/m) = √(2*1250/50) = √50 = 2√5
*Thursday, June 20, 2013 at 10:17am by Steve*

**Physicss....**

Two carts with masses of 4.24 kg and 2.22 kg move toward each other on a frictionless track with speeds of 4.55 m/s and 3.16 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*Thursday, December 15, 2011 at 11:13pm by Marie*

**PHYSICSS**

A block is projected up a frictionless inclined plane with initial speed v1 = 3.40 m/s. The angle of incline is è = 31.1°. (a) How far up the plane does it go?(m) (b) How long does it take to get there? (s) (c) What is its speed when it gets back to the bottom?(m/s)
*Sunday, October 3, 2010 at 4:51pm by ashley*

**physicss**

A small cork with an excess charge of +6 . 0 μ C is placed 0 . 18 m from another cork, which carries a charge of − 3 . 2 μ C. What is the magnitude of the electric force between the corks? The Coulomb constant is 8 . 98755 × 10 9 N · m 2 / C 2 . Answer in units...
*Sunday, November 15, 2009 at 5:12pm by Anonymous*

**PHYSICSS**

The work done is the integral of P dV, with P a function of V. That is the integral of [2.5 *10^4/V - 10^3 ]dV from V=1 to V=3 = 2.5*10^4 ln 3 - 1000 (3-1) = 25,500 J
*Wednesday, November 12, 2008 at 10:42pm by drwls*

**physicss**

A small cork with an excess charge of +5.0 μC is placed 0.12 m from another cork, which carries a charge of −3.2 μC. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 × 109 N · m2/C2. Answer in units of N.
*Sunday, November 15, 2009 at 5:12pm by maria*

**physicss**

A 0.190 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferred as heat to the copper is 6.62 x 10^4 J. If the specific heat of copper is 387 J/kg x °C, what is the change in temp of the copper?
*Sunday, November 1, 2009 at 7:17pm by arriell*

**physicss**

a small cork with a excess charge of +6.0 μC (1 μc = 10^-6 C) is placed 0.12 m from another cork, which carries a charge of -4.3 μC.... how many electrons are on the negative cork?
*Sunday, November 15, 2009 at 5:12pm by abbigail*

**physicss**

F*time=mass*changeinvelocity solve for time. for distance... 1/2 m vi^2= force*distance solve for distance.
*Monday, November 2, 2009 at 7:05pm by bobpursley*

**Physicss**

Chapter 4, Problem 40 A 94.9-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 2.30 m/s^2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of 1...
*Wednesday, February 2, 2011 at 7:06pm by Tiffany*

**physicss**

A car traveling 84 km\h is 150 m behind a truck traveling 67km\h. How long will it take the car to reach the truck?(Second) I'll got the answer and it was 30 second But I really dono how It was solved I need the wayyy;((
*Sunday, October 16, 2011 at 5:07am by saly*

**physicss**

A long string carries a wave; a 5.40-m segment of the string contains three complete wavelengths and has a mass of 180 g. The string vibrates sinusoidally with a frequency of 45.0 Hz and a peak-to-valley displacement of 19.0 cm. how do you go about writing a formula in the ...
*Friday, May 21, 2010 at 6:22am by pam*

**physicss please help**

Calculate the terminal velocity for a baseball. A baseball's diameter is approximately d = 0.073 m, and its mass is m = 0.146 kg. Express your answer in meters per second and miles per hour. (Assume a drag coefficient of 1 and air density of 1.3 kg/m3.) __ m/s __ mph
*Saturday, February 14, 2009 at 12:42am by kj*

**Physicss**

A guy playing basket-ball needs to make the penalty shot for his team to win. Given that the ball is thrown from a height of 2 meters at an angle of 60 degrees, that the post is situated at a distance of 7 m and standing at 3.5 m: a) What does the initial velocity have to be? ...
*Friday, November 18, 2011 at 4:42pm by Brian*

**Physicss**

1. Carlos jogs in a straight line at a constant speed of 1.5 m/s. He passes by Victoria, who, 10 seconds after Carlos had passed her, starts accelerating at a constant rate of 0.50 m/s^2 a) How much time after the passing of Carlos does it take Victoria to catch up to him? b) ...
*Tuesday, October 18, 2011 at 2:51pm by Raf*

**PHYSICSS!!!!!**

At t = 0, a particle moving in the xy plane with constant acceleration has a velocity of vi = (3.00 i - 2.00 j) m/s and is at the origin. At t = 2.00 s, the particle's velocity is v = (6.60 i + 4.00 j) m/s. Find the acceleration of the particle at any time t. (Use t, i, and j ...
*Tuesday, November 4, 2008 at 1:10am by jacky*

**PHYSICSS.. someone help plz.**

The horizintal distance travelled t seconds following the kick is X = 15 cos 35 * t The vertical height is Y = 15 sin 35 * t - (g/2) t^2 g = 9.8 m/s^2 is the acceleration of gravity You should be familiar with these formulas. Solve the Y equation for the time T when Y = 0. ...
*Monday, December 3, 2007 at 8:59pm by drwls*

**PHYSICSS!!!**

Well, what I see is 1/[3.72*10^8 - x]^2 = 1.2*10^-2/x^2 so x^2 =1.2*10^-2 [3.72*10^8 - x]*2 x*2 = 16.6*10^14 - 8.93*10^6 x + 1.2*10^-2 x^2 or .988 x^2 + 8.93*10^6 x - 16.6*10^14 = 0 solve that quadratic and use the positive answer (after checking my arithmetic carefully)
*Wednesday, December 26, 2007 at 12:09am by Damon*

**physicss**

A 0.005kg bullet is fired at 400m/s straight into a stationary 1.0kg block of wood. The bullet exits the far side of the block and continues on the same straight line. The block also moves off in this same direction with a velocity of 1.2m/s. Calculate the velocity of the ...
*Tuesday, October 2, 2012 at 11:52pm by taryn*

**physicss**

vivian is walking to the hairdresser's at 1.3 m/s when she glances at her watch and relizes that she is going to be late for her appointment. Vivian gradually quikens her pace at a rate of 0.090 m/s2(squared) What is vivians speed after 10.0s? At this rate is Vivian walking ...
*Tuesday, September 11, 2007 at 8:20pm by confusedd!HELPP!!!*

**Physicss**

a typical woman gives off heat at rate of about 8000 calories per hour. how long would a woman have to stay in a bath of 60L (60,000 g) of 26 C water in order to raise the water temperature to 30 c ? presume that all the heat given off by the woman is transferred to the water...
*Thursday, May 9, 2013 at 10:20am by mary*

**Physicss**

We did not find results for: a typical woman gives off heat at rate of about 8000 calories per hour. how long would a woman have to stay in a bath of 60L (60,000 g) of 26 C water in order to raise the water temperature to 30 c ? presure that all the heat given off by the woman...
*Thursday, July 15, 2010 at 2:51pm by mary*

**physicss help!**

m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with the spring unextended...
*Wednesday, November 2, 2011 at 5:58pm by joe*

**physicss**

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the spring scale on the moon...
*Friday, January 25, 2013 at 4:30pm by MIKE*

**physicss**

To get an answer, you have to assume that the field is uniform everywhere along the orbit, not just use a value at the center. You also must assume that the B field is perpendicular to the circular orbit. Then use m V^2/R = e V B V = (e/m) B R P (Period) = 2 pi R/V B = (m/e)*(...
*Wednesday, April 27, 2011 at 4:13am by drwls*

**physicss**

The squared business means Vivian is walking at 1.3 m/s. When she quickens her pace, the next second she is walking at 1.3 + 0.09 m/s and the next second at 1.3 + 0.09 + 0.09 m/s etc. The m/s^s is read meters per second squared OR you can think of it as meters per second per ...
*Tuesday, September 11, 2007 at 8:20pm by DrBob222*

**Physicss **

Please show work You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 270 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the stove. (a) Is this a ...
*Thursday, July 15, 2010 at 2:51pm by Anonymous*

**PHYSICSS**

Question In an experiment a gas was found to obey the following equation of state: (P + 10^3)V = 2.5 x 10^4 J Find the work done when the gas expands from 1 m3 to 3 m3. _______ the answer is suppose to be 2.55 x 104J ____________ what i did so far 2 ways i approached this ...
*Wednesday, November 12, 2008 at 10:42pm by Kimora*

**Physicss**

Assuming that Victoria was standing still when Carlos passed her, we have the following equations, calling t=0 when he passes her: Carlos: s = 1.5t Victoria: s = .25(t-10)^2 set them equal to find when they have traveled the same distance -- that is, when she passes him. 1.5t...
*Tuesday, October 18, 2011 at 2:51pm by Steve*

**physicss**

The question states: A 5.2 kg box is on a frictionless 36 degree slope and is connected via a massless string over a massless, frictionless pulley to a hanging 2.1 kg weight. What is the tension in the string if the 5.2 kg box is held in place, so that it cannot move? I summed...
*Thursday, December 9, 2010 at 10:36pm by Taylor*

**physicss**

on earth we are given that W = m g = 9.81 m = 17.1 N so m = 17.1/9.81 = 1.74 kg F = m a in static case a = 0 so m g - k x = 0 x = m g/k .044 = 17.1/k so k = 389 Newtons/meter on moon Gmoon = g/6 = 9.81/6 = 1.64 m/s^2 mg moon = (1/6) mg earth = 17.1/6 stretch moon = stretch ...
*Friday, January 25, 2013 at 4:30pm by Damon*

**physicss**

Which of the following is true for a photon? A photon of wavelength 3000 x 10-10 m has momentum twice than a photon of wavelength 6000 x10-10 m. A photon of wavelength 3000 x 10-10 m has momentum twice than a photon of wavelength 6000 x10-10 m. A photon of wavelength 3000 x 10...
*Sunday, February 3, 2013 at 1:36pm by physics student*

**PHYSICSS!!!**

still cant get this one? so damon i know you wanna help! or anyone else im open for suggestions haha Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at that point, the tugs on the spaceship from ...
*Wednesday, December 26, 2007 at 12:09am by Rory still need help damon and others*

Pages: **1**