Tuesday

May 3, 2016
Number of results: 72,930

**Physics**

Near the surface of the Earth there is an electric field of about V=150 V/m which points downward. Two identical balls with mass m= 0.550 kg are dropped from a height of 2.30 m, but one of the balls is positively charged with q1= 800 microCoulombs , and the second is ...
*February 7, 2010 by Ambrie*

**Physical science **

ONE SECOND after ball A is projected upwards with a velocity of 16 m/s, a second ball, B, is thrown vertically downwards at a velocity of 9 m/s from a balcony 30 m above the ground. 1.Calculate how high above the ground ball A will be at the instant the two balls pass each other?
*March 27, 2016 by Khutso*

**Stats**

A basketball player makes 80% of her free throws. Recently during a very close game, she shot 5 free throws near the end of the game and missed 3 of them. The fans booed. What is the probability of her missing 3 (or more) free throws out of 5? Set up and conduct a simulation (...
*February 8, 2015 by Maddie*

**Physics**

a major league outfielder throws a baseball horizontally with a velocity of 22 m/s, released from a height of 1.8m. how far does it go before it hits the ground ?
*November 1, 2012 by Tavani*

**Math**

One person can complete a piece of work in 8 days while other person can complete the same work in 4 days(if both works 10 hours per day). how many hours are required to complete the same work if both persons do it combined?
*January 6, 2016 by Tehseen*

**Physical science.**

A skydiver who jumps out of a plane that has a forward velocity of 40 m/s. That means that the skydiver has a forward velocity of 40m/s. Ignore the air resistance. The questions: What difference is there between the downward velocities of the skydiver who jumped out of the ...
*September 28, 2012 by Hannah *

**English**

I left out a few things. Thank you very much for helping me. 1) Amnesty works by collecting information. When it has a proof that a person is a 'Prisoner of Conscience', then a person's case is handed over to a local group. Question: Amnesty gathers information a) to determine...
*April 14, 2012 by Matthew*

**Physics**

A car of mass 1390 kg rests on a hydraulic lift with a piston of radius 0.26 m that is connected to a second piston of radius 0.033 m. If the car is just barely lifted off the ground, what is the force at the second piston? I Tried F1/F2 = r1^2 / r2^2 ==> 1390x10 / F2 = 0....
*November 20, 2015 by Noel*

**physics**

A basketball of mass 0.602 kg is passed to a player of mass 83.0 kg who jumps off the floor while catching the ball. The player's center of mass is instantaneously at rest just before he catches the ball, which is initially moving at a velocity of 11.5 m/s, directed 30.0° ...
*November 29, 2012 by Anthony*

**math **

A person flying a kite holds the string 4 feet above ground level. The string of the kite is taut and makes an angle of 60° with the horizontal (see the figure). Approximate the height of the kite above level ground if 700 feet of string is payed out. (Round your answer to one...
*September 28, 2011 by STEPHANIE *

**AP Physics**

A hot air balloon is ascending at the rate of 13 m/s and is 75 m above the ground when a package is dropped over the side. How long does the package take to reach the ground? With what speed does it hit the ground?
*September 9, 2007 by Kristen*

**physics**

A hot air balloon is ascending at the rate of 13 m/s and is 75 m above the ground when a package is dropped over the side. How long does the package take to reach the ground? With what speed does it hit the ground?
*September 9, 2007 by Kristen*

**physics**

A hot-air balloon is ascending at the rate of 13 m/s and is 73 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?
*November 26, 2009 by john*

**Physics**

A hot-air balloon is ascending at the rate of 13 m/s and is 62 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?
*January 16, 2011 by Ethan*

**physics**

A hot-air balloon is ascending at the rate of 11 m/s and is 51 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?
*March 10, 2011 by gemmma*

**linear equations in two variable**

A person going at a rate of 5 km/hr in still water,takes thrice as much time in going 40km upstream as in going downstream. Find the speed of the stream.
*July 2, 2015 by pankaj khanna*

**Math**

If a person was locked in a perfectly insulated room 8ft by 8ft by 10ft, how long would it take the room temperature to increase from 75 degree Farenheit to 100 degree Farenheit? The density of air is 1.2 Kg/Cubic meter and 1 watt sec is its specific heat. A person's body heat...
*February 27, 2011 by Anonymus*

**calculus**

a light sitting on the ground is shining onto a wall 20 feet away from the light. if a 5 foot person is walking toward the light at 4 ft/sec., how fast is the shadow moving up or down the wall when he is 15 feet from the wall?
*December 4, 2011 by Anonymous*

**Physics**

A person with a mass of 110 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator accelerates upward at 3.4 m/s2 , what does the scale read?
*October 30, 2011 by UD*

**Health**

What does the U.S. government use to estimate a person’s body weight status? A. Scale B. Ruler C. Body mass index D. Health related illnesses c?
*August 30, 2012 by Sam*

**health**

What does the U.S. government use to estimate a person’s body weight status? A. Health related illnesses B. Body mass index C. Scale D. Ruler
*October 30, 2014 by Anonymous*

**physics**

the most common reasons for rear - end collisions are too short a following distance, speeding and failing brakes. car A of mass 1000 kg, stationary at a traffic light, is hit from behind by car B of mass 1200kg, travelling at 18m.s. immediately after the collision car A moves...
*April 26, 2011 by anonymous*

**Khudu secondary **

Car A of mass 1 000 kg,stationary at a traffic light,is hit from behind by car B of mass 1 200 kg,traveling at 18 m.s-1. Immediately after the collision car A moves forward at 12 m.s-1. 1. Assume that linear momentum is conserved during this collision. Calculate the speed of ...
*March 10, 2013 by Antony*

**physics gr 12**

A flower pot is dropped from the balconey of an apartment 28.5 metres above the ground. At a time of 1 second after the pot is dropped a ball is thrown vertically downwards from the balconey one story below 26 metres above the ground. The initial velocity of the ball is 12 ...
*February 21, 2011 by just wondering*

**physics**

A person walks first at a constant speed of 4.50 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 3.00 m/s. (a) What is her average speed over the entire (b) What is her average velocity over the entire trip? trip?
*February 7, 2010 by babidi*

**Physics**

I have a quick question, If a ballplayer catches a ball 3.0s after throwing it vertically upward. With what speed did he throw it, and what height did it reach?
*September 13, 2010 by Jenna*

**Physics**

Two groups of canoeists meet in the middle of a lake. After a brief visit, a person in canoe 1 pushes on canoe 2 to separate the canoes. Suppose the speeds of the two canoes after they are pushed apart are 0.65 m/s for canoe 1 and 0.47 m/s for canoe 2. If the mass of canoe 1 ...
*October 23, 2012 by RoCu*

**Religions of the World**

I need some help. for my finial project which is due in 6 weeks I am to pick a religion and write about it as well as find a person from that religion and conduct an online or in person interview with. In this interview I am to ask questions such as What do they believe is ...
*January 20, 2008 by Trish*

**college physics**

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the ...
*January 31, 2010 by tina*

**college physics**

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the ...
*January 31, 2010 by tina*

**physics**

While standing on a bridge 18.5 m above the ground, you drop a stone from rest. When the stone has fallen 2.80 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take...
*February 7, 2011 by shaknocka*

**Physics**

While standing on a bridge 19.1 m above the ground, you drop a stone from rest. When the stone has fallen 3.40 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take...
*September 9, 2012 by jhockens*

**Physics**

While standing on a bridge 18.3 m above the ground, you drop a stone from rest. When the stone has fallen 2.60 m, you throw a second stone straight down. What minimal initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take...
*September 9, 2012 by jhockens*

**Physics**

A person on horseback moves according to the velocity-versus-time graph shown in Figure 2-32. (The vertical axis is marked in increments of 1 m/s and the horizontal axis is marked in increments of 7 s.) Find the displacement of the person for each of the segments A, B, and C. ...
*October 12, 2009 by Robert C*

**Math 134**

A single person could expect to pay $4,760 in income taxes on an adjusted gross income of $34,000 how much more tax should the person expect to pay if her adjusted gross income increased by $2,000, knowing that this owuld not move her into the higher tax bracket
*March 16, 2014 by In need of help*

**psychology 220**

1.74 (1 pts.) You are a therapist and one of your clients has just told you that he is planning to murder his neighbor. Based on the principle of "duty to warn" what is the primary thing you should do? A) Ignore your client's threat. B) Notify the potential victim's family. C...
*December 10, 2012 by G. KAY*

**Spanish: PLEASE HELP**

Please help. Thank You. 1. The stem-changers in the current section are similar to those in the previous section except these stem-change "o" to "oe." *A.) true B.) false 2. Of the following, which is not a stem-changing verb? A.) almorzar *B.) comer C.) volver D.) contar E.) ...
*February 26, 2013 by James*

**calculus - INTEGRATION**

A balloon, rising vertically with a velocity of 16 feet per second, releases a sandbag at the instant it is 64 feet above the ground. a. How many seconds after its release will the bag strike the ground? b. At what velocity will it hit the ground?
*February 2, 2011 by Gabriel*

**math**

If x represents the total number of bags a person checks and each person checks more than two bags, the equation below can be used to determine C, the total fee for all the bags. 20 + 25 + 50(x - 2) = C Arianna paid a total of $145 to check all her bags on a flight. How many ...
*July 12, 2011 by Kelvin*

**physics**

a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? what is the deceleration of the rock when it hits the ground?
*September 21, 2011 by Taylor*

**physics**

a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? what is the deceleration of the rock when it hits the ground?
*September 21, 2011 by Taylor*

**English**

Tell what person, what type, and how you know. Mr. Morton knew the students were running out of time, but he felt that he needed to give an example of the activity, so he did. One of his students raised his hand. "Yes?" Mr. Morton asked. "I know I'm going to have problems with...
*April 7, 2014 by Anonymous*

**mathhhhh**

For a person of height h (in inches), a healthy weight W (in pounds) is one that satisfies this system of inequalities: W is greater than or equal to (19h^2)/703 and W is less than or equal to (25h^2)/703 Graph the system for 0 is less than or equal to h which is less than or ...
*April 25, 2012 by cheyanne marie*

**math**

Two restaurants have rooms to rent for dinner parties. One restaurant charges $100 to rent a room and $20 per person. The other restaurant charges $25 to rent the room and $25 per person. Which of the following is the number of people for which the cost of a dinner party would...
*July 13, 2014 by Roberta*

**algebra **

in a recent year a single person could expect to pay 4160 in income taxes on an adjusted gross income of 26,000. how much more tax should the person expect to pay if her adjusted gross income increased by 4,000 knowing that this would not move her into the higher tax bracket.
*May 15, 2015 by Ann*

**Algebra**

A person riding a Ferris wheel with a diameter of 64 feet travels once around the wheel in 25 seconds. What is the average speed of the rider in miles per hour? (Round your answer to one decimal place.)
*March 27, 2015 by Vicki*

**Science**

In humans, the allele for curly hair and the allele for straight hair show incomplete dominance. The offspring of a curly-haired person and a straight-haired person will have... I think it is curly and straight hair. Help please ?
*January 30, 2015 by Ruby :)*

**math**

A certain antibioyic reducesthe number of bacteria in your body by 10% each dose a) if four doses of the antibiotic are taken, what percent of the original bacterial population is left. b) biologists have determined that when a person has a bacterial infection, if the ...
*December 23, 2012 by Riana*

**physics**

Q. A person wants to shoot a rocket off of a mountain 3.26 km high so that the rocket, when shot at 31.3¡Æ above the horizontal from the very top of the mountain, lands at the foot of the mountain 9.37 km (horizontal distance) away. a) What initial speed must the rocket have...
*October 17, 2010 by Lyn*

**physics**

A person pulls on a 41 kg table with a 203 N force acting at an angle of 27.1 degrees above the horizon. The frictional force on the table is 120 N. What is the speed of the desk after it has moved 2.3 m?
*December 10, 2009 by Cory *

**geometry**

A person riding the original Ferris Wheel is traveling at a speed of 0.495 mph. If one revolution takes 9 minutes, what is the diameter of the Ferris Wheel? Show your work.
*March 19, 2014 by Brittany*

**projectiles**

two children ride bicycle towards each other with instant velocity of 20m/s and 10m/s. Each child releases a ball 6m above the ground with forward horizontal velocity of 40m/s relative to the bicycle. if the two balls collide in above the ground. what was the seperation when ...
*April 29, 2012 by ridhi*

**physics**

two children ride bicycle towards each other with instant velocity of 20m/s and 10m/s. Each child releases a ball 6m above the ground with forward horizontal velocity of 40m/s relative to the bicycle. if the two balls collide in above the ground. what was the seperation when ...
*May 3, 2012 by ridhi*

**physics**

An airplane of mass 1.5x10^4kg is moving at 60m/s. The pilot then revs up the engine so that the forward thrust of the propeller becomes 7.5x10^4 N, find the speed of airplane after it has traveled 500m. Assume that the airplane is in level flight through this motion.
*October 28, 2007 by Anonymous*

**art**

Jennifer throws a fair six-sided die, what is the probability that she throws either 1,2,3,4,5,or 6?
*January 5, 2015 by Anonymous*

**physics!!**

The two masses (m1 = 4.96 kg and m2 = 2.90 kg) in the Atwood's machine shown in the figure below are released from rest, with m1 at a height of 0.800 m above the floor. When m1 hits the ground its speed is 0.203 m/s. Assuming that the pulley is a uniform disk with a radius of ...
*October 21, 2012 by Emily *

**Intergated chemistry/physics**

A car is accelerated at a rate of 2.5 meters/second^2. If the starting speed is 5.0 meters/second, how many seconds will it take the car to reach a final speed of 27.0 meters/second?
*October 3, 2012 by Laura*

**phy**

An 90 kg person steps into a car of mass 2600 kg, causing it to sink 2.35 cm on its springs. Assuming no damping, with what frequency will the car and passenger vibrate on the springs?
*December 4, 2010 by klk*

**physics**

Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 10^7 m.
*June 5, 2014 by grey*

**physics**

a 145g baseball is dropped from a tree 13.0m above the ground. with what is the velocity of the baseball at the ground after it falls 13.0m? B. If it actually hits the ground with a speed of 8.0o m/s, what is the average force of air resistance exerted on it?
*November 12, 2009 by Sasha*

**physics**

A clump of soft clay is thrown horizontally from 78.40 m above the ground with a speed of 27.0 m/s. Where is the clay after 4.5 s? Assume it sticks in place when it hits the ground. horizontal ....m from the launch position vertical ....m from the ground
*January 21, 2010 by Sandhya*

**Physics**

An air-hockey puck of mass m floats across the table essentially frictionless on a cushion of air. This puck bumps nearly head-on into a second puck that has 3 times the mass, moving in the opposite direction but with the same speed, v i , as the lighter puck. Immediately ...
*August 6, 2012 by Joe*

**Math**

A fish and game worker catches, tags, and releases 120 trout in a lake, Later she catches 84 trouts and finds tags on 30 of them. Estimate the total number of trout in the lake a.43 b.234 c.336 d.3,600
*May 21, 2015 by Dominique*

**Physics**

A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. If the walls are at 13.8° C and the rate of radiation is 96.0 kcal/h (a typical basal metabolic rate), what is the ...
*December 10, 2013 by BrandiB123456789*

**physics**

A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. If the walls are at 11.5° C and the rate of radiation is 75.2 kcal/h (a typical basal metabolic rate), what is the ...
*June 17, 2014 by Anonymous*

**12th grade**

You're riding on a train that's moving at 50 km/h, and you roll a ball down the aisle at 2 km/h in the same direction as the train is moving. If a person standing on the ground near the train track could see the ball, how fast would it appear to be moving?
*November 2, 2010 by Anonymous*

**Physics (Tension)**

A uniform plank of length 2.00 m and mass 35.0 kg is supported by three ropes, as indicated by the blue vectors in the figure below. Find the tension in each rope when a 690-N person is d = 0.725 m from the left end.
*November 7, 2012 by Alex Baker*

**social studies**

Lloyd is sitting in the waiting area of a swank restaurant anticipating a dinner meeting with a new client whom he has never met. All he knows is that the new client is named Chris. When he first meets Chris, which one of the following pairs of characteristics will Lloyd ...
*January 17, 2013 by phia*

**Physics**

A 0.51-kg mass is attached to a horizontal spring with k = 108 N/m. The mass slides across a frictionless surface. The spring is stretched 26 cm from equilibrium, and then the mass is released from rest. (a) Find the mechanical energy of the system. (b) Find the speed of the ...
*June 2, 2012 by Vladimir*

**Physics**

A 0.53-kg mass is attached to a horizontal spring with k = 106 N/m. The mass slides across a frictionless surface. The spring is stretched 27 cm from equilibrium, and then the mass is released from rest. (a) Find the mechanical energy of the system. (b) Find the speed of the ...
*June 2, 2012 by Jimmy*

**Proofread!!**

This is my conclusion to my persuasive paper please check my grammer. As one can see there are many benefits and advantages of going to college. College gives one the opportunity to question everything and teaches one how to think on their own. College provides one with a ...
*March 27, 2008 by Britney*

**anonymous**

I need help solving these problems. I tried but my teacher did not teach it to us so it is very difficult for me. Thanks. "Projectiles launched at an angle" 1. A golfer can hit a golf ball a horizontal distance of over 300 m on a good drive. What maximum height will a 301.5 m ...
*October 25, 2006 by PHYSICS.....confused*

**physics**

A 14 kg body is moving through space in the positive direction of an x axis with a speed of 220 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 6.4 kg, moves away from the point of explosion with a speed of 190 m/s in the positive y...
*March 29, 2011 by john*

**Physics**

As measured from centre ice, a single wildly cheering hockey fan can produce a sound intensity level of 60dB. What sound intensity level would be produced by 20 000 cheering fans? --------- If sound waves travel through the ground with an average speed of 6150 m/s and a ...
*May 15, 2012 by HelpMeWithPhysics*

**Physics**

While warming up in her tryout as a pitcher for the Montwood softball team, Anabel Parga throws a softball horizontally with a speed of 22m/s. a. If home plate is 19m away, how far should the softball fall from its initial straight-line path on its way to home plate? b. The ...
*September 16, 2012 by sam*

**math**

Consider the following students method of solving the proportion 8/5 = 20/x and determine whether the methods were correct: Richie: First I divided 20 by 8 and got 2 1/2. Then I multiplied 2 1/2 by 5 and got 12 1/2 for my answer. Martha: I think of it this way. Every time a ...
*August 11, 2010 by Ella*

**physics**

From a tree that is 15m tall, a fruit of mass 2kg falls to the ground. (a) find the initial GPE (b) find the speed at impact (c) find the KE at impact (d) how much energy was lost to heat and sound after the mass came to rest?
*March 15, 2011 by Madi*

**physics**

As you hurry to catch your flight at the airport, you encounter a moving walkway that is 85m long and has a speed of 2.2 m/s relative to the ground. If it takes you 68s to cover 85m when walking on the ground, how long will it take you to cover the same distance on the walkway...
*October 2, 2011 by Erin*

**mathmodeling**

Person A opens an IRA at age 25, contributes $2000 per year for 10 years, but makes no additional contributions thereafter. Person B waits until age 35 to open an IRA and contributes $2000 per years for 30 years. There is no initial investment in either case. a) Assuming an ...
*August 18, 2011 by fazilah*

**Math**

At Chaniel's school, one cafeteria helper is chosen from each class by a random drawing. In Chaniel's class, the probability of the chosen person being taller that five feet is 1/5. Find the odds in favor of the chosen person being taller than five feet.
*February 1, 2011 by Briella*

**college physics**

Now assume that the pitcher throws a 0.145 kg baseball parallel to the ground with a speed of 32 m/s in the +x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line. What is the ball's velocity just after leaving the bat ...
*March 11, 2010 by Anonymous*

**math**

Can someone explain this to me. Determine if the given rule is a function, and if not, explain why. a. People assigned to their fathers b. Numbers assigned to the sums fo their digits. c. Mothers assigned to their children. a) Here the rule defines a function from the set of ...
*April 18, 2007 by Priscilla*

**Physics**

An automobile tire has a radius of 0.380 m, and its center moves forward with a linear speed of v = 19.0 m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) rad/s
*April 4, 2008 by Zay*

**english1a- my thesis, is it better?**

Many people have dreams whether it is to buy their dream car, dream house, or go on their dream vacation. Here in the land of freedom and opportunities, there is one dream that everyone strives for; the American Dream. The American Dream can mean different things to many ...
*September 29, 2009 by Kuromi*

**Biophysics**

a person is standing with there feet 0.1m apart and length from shoulders to feet(pivot point) is 1.5m what is the minimal coefficient of static friction required so that the frictional force is at least 1.5 x as large as the external force toppling the person? according to my...
*September 25, 2011 by nully*

**comprehending/english**

The question is What sources cited or quoted, and if so, to what effect? This is the paragraph: A few months back, while I was giving a workshop on LGBTQIA identities and safety, someone brought up the George Zimmerman trial. In the midst of our discussion, a white participant...
*April 17, 2014 by Blaze*

**physics**

Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 107 m.
*June 5, 2014 by grey*

**English**

It's more of a survery question where I need to ask people how they feel about advertising... Then write 250 words about it. When an author (like on T.V., newspapers, magazines) uses the word 'you' throughout the article. Do you find the second person more stylistically ...
*September 3, 2007 by Tess*

**English**

It's more of a survery question where I need to ask people how they feel about advertising... Then write 250 words about it. When an author (like on T.V., newspapers, magazines) uses the word 'you' throughout the article. Do you find the second person more stylistically ...
*September 4, 2007 by Tess*

**Comm 100 college**

Which of the following statements is true concerning finding similarities? 1. An accurate way to assess similarities is to focus on appearance and clothing. 2.Once you find similarities, you can assume the other person will have similar views on most issues. 3.It is important ...
*September 9, 2011 by Nicole*

**Physics**

A gray kangaroo can bound across a flat stretch of ground with each jump carrying it 11 from the takeoff point. If the kangaroo leaves the ground at a 18 angle, what is its takeoff speed ? What is its horizontal speed?
*October 13, 2012 by anonymous*

**physics**

A 0.44 kg object connected to a light spring with a spring constant of 22.0 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. 28.28 cm/s (b) Determine the speed of the mass ...
*January 11, 2011 by julie*

**Language Art (Please Check)**

please check....i also put the deffinitons just in case... 1.which of the following might be considered a tedious job? A.designing video games(i PICK THIS A.) B.writing an advice column C.bagging groceries 2.A person who shows bigotry is likely to have feelings of A.pride B....
*March 6, 2014 by matt*

**Math**

he physics department of a college has 9 male professors, 8 female professors, 10 male teaching assistants, and 13 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a teaching assistant or a female
*July 2, 2014 by Junior*

**physics**

A bus with a vertical windshiled moves along in a rainstorm at speed V relative to the ground. The raindrops fall vertically with a terminal speed of V' relative to the ground. At what angle do the raindrops strike the windshield?
*October 8, 2012 by ringo*

**physics**

A cart running on frictionless air tracks is propelled by a stream of water expelled by a gas-powered pressure washer stationed on the cart. There is a 1.0-m3 water tank on the cart to provide the water for the pressure washer. The mass of the cart, including the operator ...
*March 6, 2011 by HELP!!!!*

**Physics**

A ball bounces upward from the ground with a speed of 14 m/s and hits a wall with a speed of 12 m/s. How high above the ground does the ball hit the wall? Ignore air resistance.
*January 5, 2012 by Zach*

**physics**

A 0.43 kg object connected to a light spring with a spring constant of 21.4 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. (b) Determine the speed of the mass when the ...
*October 21, 2012 by roro*

**Physics**

A man of mass 75.5 kg walks down the aisle of an airplane at a speed of 1.50 m/s in the forward direction while the plane moves at a speed of 305 m/s relative to the earth. (a) Find the man's kinetic energy relative to the plane. (b) Find the man's kinetic energy relative to ...
*October 10, 2011 by Kellie *

**NCSU**

A man of mass 83.5 kg walks down the aisle of an airplane at a speed of 1.60 m/s in the forward direction while the plane moves at a speed of 295 m/s relative to the earth. (a) Find the man's kinetic energy relative to the plane. (b) Find the man's kinetic energy relative to ...
*March 24, 2012 by Amber*