Monday

June 27, 2016
Number of results: 73,773

**chemistry**

A typical adult body contains 55 \% water. If a person has a mass of 61.0kg , how many pounds of water does she have in her body?
*September 14, 2012 by Anonymous*

**math**

Two swimmers competed in a 20 mile race. Person 1 swam at a rate of 4 miles every 25 minutes. Person 2 swam at a rate of 3 miles every 20 minutes, Who won and what was each swimmers time?
*October 27, 2012 by lynn*

**calculus**

a key is dropped from a height of 30 m , If its distance from the ground at t seconds after the release is given by the position function d (t) = 30-5t², find a.its height velocity and acceleration after 1 second. b. the time it reached the ground. c. its position after 1 second
*August 11, 2011 by Anonymous*

**Physics **

A race car starts from rest in the pit area and accelerates at a uniform rate to a speed of 35 m/s in 11s, moving on a circular track of radius 500 m. Determine the tangential and centripetal components of the net force excreted on the car(by the ground) when it's speed is 15 ...
*May 19, 2013 by Martin*

**language art**

1.Chris was being OBNOXIOUS when he -told Mrs.Kelly it was a great day for a race. -insulted Gina's new haircut. -kept the little kids' ball from going into the street. -returned Mr.Cho's keys. 2.If something is STATELY, it is -impressive -informal -common -tacky 3.To NEEDLE a...
*December 18, 2013 by Chrissy*

**physics, doppler effect**

"A source of sound of frequency f0 moves horizontally at constant speed u in the x direction at a distance h above the ground. An observer is situated on the ground at the point x=0 (the source passes over this point at t=0). Show that the signal received at any time Tr at the...
*April 27, 2015 by doppler effect*

**Physics**

A stone is thrown downward with a speed of 12 m/s from a height of 20 m. (acceleration due to gravity: 9.81 m/s2) a) What is the speed (in m/s) of the stone just before it hits the ground? b) How long does it take (in seconds) for the stone to hit the ground?
*October 21, 2014 by Adub*

**Physics**

A person walks 3.0847x10^1 m East, then turns around and walks 8.677x10^0 m West. The total time to walk this distance was 7.8624x10^2 s. What is the speed of the walker, expressed to 3 significant figures? please help me im so confused
*October 11, 2010 by annonomus*

**bio**

A typical adult body contains 55 \% water. If a person has a mass of 70.0 kg, how many pounds of water does she have in her body?
*June 10, 2010 by andy*

**chemistry**

A typical adult body contains 55 water. If a person has a mass of 61 , how many pounds of water does she have in her body?
*September 6, 2012 by courtney*

**physics **

The sweeping second hand on your wall clock is 24cm long. a)What is the rotational speed of the second hand? b)Find the translational speed of the tip of the second hand. c)Find the rotational acceleration of the second hand.
*March 5, 2015 by help me please*

**Law**

"A person who has both rights and duties" is a concept that defines the most basic concept of the law. In U.S. law, a person is defined as having all of the rights specified in the first 10 amendments to the U.S. Constitution (the Bill of Rights), plus many rights that are not...
*November 4, 2011 by Colby*

**physics**

You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m above the ground, it is travelling at 25.0 m/s upward. Use the work-energy theorem to find a) its speed just as it left the ground; b) its maximum height.
*February 21, 2010 by anton*

**Math**

to determine the number of catfish in a pond, a game warden catches 131 catfish, tags them and throws them back into the pond. later, 20 catfish are caught, 10 of them are tagged. How many catfish would the game warden expect to be in the pond? 131/10 20/x
*June 15, 2015 by Kayla*

**physics**

imagine a flat, lightweight wheeled cart that's low to the ground and has well-oiled bearings. what would happen if you approached the cart, stepped onto it, and walked along its length at a constant speed? it would a) remain nearly stationary b) advance along with you c) move...
*April 10, 2011 by sw*

**physics**

imagine a flat, lightweight wheeled cart that's low to the ground and has well-oiled bearings. what would happen if you approached the cart, stepped onto it, and walked along its length at a constant speed? it would a) remain nearly stationary b) advance along with you c) move...
*April 10, 2011 by g*

**algebra**

The question I have is to solve the problem. A model rocket is launched from the ground with an initial speed of 50 feet per second. The equation that models its height, h feet, off the ground t seconds after it was fired is h=-16ft^2+50t a)How high is the rocket 1 seconds ...
*May 21, 2013 by Ressie*

**physics **

A person of mass M lies on the floor doing leg raises. His leg is 0.85m long and pivots at the hip. Treat his legs (including feet) as uniform cylinders, with both legs comprising 34.5% of body mass, and the rest of his body as a uniform cylinder comprising the rest of his ...
*February 25, 2014 by blake*

**physics**

The 20kg object is dropped from a height of 2 meters. Find its speed when it hits the ground. Give your answer in meters per second.
*February 26, 2012 by Darcie*

**Physics**

A small boy of mass 0.2kg moves uniformly in a circle on a horizontal frictionless surface, attached by a cord 0.2m long to a pin set in the surface. If the body makes two complete revolutions per second, find the force P exterted on it by the cord. The speed of the boy is V...
*April 12, 2007 by Febby*

**physics**

A truck of mass 1.0 tonne moving at 4.0 m/s catches up and collides with a truck of mass 2.0 tonne moving at 3.0m/s in the same direction. The trucks become coupled together. Calculate their common velocity
*January 20, 2014 by lalala*

**stats.**

In a transportation study of 20 large cities, it was found that the mean of the number of cars per person was 0.504. (Some of the people in the city are children.) The study also stated that the standard deviation s was 0.123. Find a 95 % confidence interval for the true mean ...
*April 4, 2013 by chris*

**physics**

a person jumps from a window 15m above a safety net. The survivor stretches the net 1.0 m before coming to rest. What was the average deceleration experienced by the person when they were slowed to rest by the net? I do know the answer is -150m/s2,but I don't know how the ...
*September 10, 2006 by Pat Battaglia*

**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 Anonymous*

**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 brittany*

**physics**

While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 5.00 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 ...
*September 9, 2010 by bethany*

**physics**

While standing on a bridge 30.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.20 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 26, 2013 by brizett*

**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*

**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*

**physics!**

Wildlife biologists fire 22g rubber bullets to stop a rhinoceros charging at 0.84 m/s. The bullets strike the rhino and drop vertically to the ground. The biologists' gun fires 15 bullets each second, at 72 m/s, and it takes 36 s to stop the rhino. What impulse does each ...
*March 23, 2012 by Eliana *

**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 *

**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*

**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*

**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**

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*

**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*

**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*

**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*

**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*

**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*

**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*

**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 *

**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*

**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**

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*

**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 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*

**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*

**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*

**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*

**Statistics**

A certain disease occurs in 4% of the population. A blood test for this disease shows a false positive 12% of the time. That means a test will show positive given that the person does not have the disease. What is the probability that a person tests positive but does not have ...
*May 25, 2016 by Ashley*

**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*

**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*

**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*

**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*

**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*

**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 *

**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*

**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*

**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 :)*

**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*

**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*

**Math**

Among a group of people, 10% are from NYC and 90% are not. All people from NYC are under 18 years old, and 70% of those not from NYC are also under 18 years old. One person is chosen at random, and he or she is under 18. What is the probability that the person chosen is from ...
*June 15, 2016 by Sarah*

**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*

**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*

**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*

**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 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*

**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 (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*

**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*