Tuesday

August 30, 2016
Number of results: 35,776

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 45 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by kyle(PLS HELP )*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by anon*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by anon*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by HELP(ANS PLS!!!!!!!!)*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by URGENT(could some one pls give me the answer*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by URGENT(could some one pls give me the answer*

**physics(help)**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by physics(help)*

**PHYSICS**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by PHYSICS*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by PHYSICS*

**physics**

A string under a tension of 43.0 N is used to whirl a rock in a horizontal circle of radius 2.45 m at a speed of 20.9 m/s on a frictionless surface as shown in the figure below. As the string is pulled in, the speed of the rock increases. When the string is 1.00 m long and the...
*March 12, 2013 by john*

**Physics please help ASAP!**

If you know the mass of a star and a planet’s radius and speed at perihelion (closest approach to the star), then using conservation of energy and angular momentum you can solve for the radius and speed of that planet at aphelion (farthest point from the star). Encke’s comet ...
*March 31, 2014 by Bobby*

**Physics**

Tarzan swings on a 27.0 m long vine initially inclined at an angle of 33.0° with the vertical. (a) What is his speed at the bottom of the swing if he starts from rest? (b) What is his speed at the bottom of the swing if he pushes off with a speed of 3.00 m/s? I tried to use ...
*March 10, 2010 by Kelsey*

**physics**

a race car completes 10 laps around an oval track. which of the following pairs of quantities concerning its motion would both have values of zero? a)displacement, avg velocity B)avg speed, avg acceleration c)distance, avg speed d)avg speed, avg velocity e) displacement, avg ...
*September 14, 2009 by kaaay*

**chemistry**

In a reaction involving the bromination of acetone, the following initial concentraions were present in the reaction mixture. acetone (0.8mol/L), H+ (0.2 mol/L), Br2 (0.004 mol/L) At 25 degrees C, it took 240s before the colour of Br2 disappeared. If the reaction is zero order...
*February 27, 2011 by Mal*

**Physics**

We're studying projectile motion in my Physics class right now, and last week we went outside and hit tennis balls with a bat. Now we must make graphs showing the position of the ball in both the x and y directions. I must also explain why each line has the shape that it does...
*November 11, 2007 by Lindsay*

**physics**

A person walks first at a constant speed of 4.90 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 2.70 m/s. (a) What is her average speed over the entire trip?
*August 31, 2010 by mattie*

**physics**

A person walks first at a constant speed of 4.90 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 2.70 m/s. (a) What is her average speed over the entire trip?
*August 31, 2010 by mattie*

**Physics**

A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 357m/s . The roar from the crowd behind her approaches at 341m/s . A) What is the speed of the sound? B) What is the sprinter's speed?
*April 12, 2015 by Anonymous*

**physics**

An archer shoots an arrow toward a 300 g target that is sliding in her direction at a speed of 2.35 m/s on a smooth, slippery surface. The 22.5 g arrow is shot with a speed of 41.0 m/s and passes through the target, which is stopped by the impact. What is the speed of the ...
*July 7, 2008 by Elisa*

**physics**

An archer shoots an arrow toward a 300 g target that is sliding in her direction at a speed of 2.35 m/s on a smooth, slippery surface. The 22.5 g arrow is shot with a speed of 41.0 m/s and passes through the target, which is stopped by the impact. What is the speed of the ...
*July 6, 2008 by Elisa*

**physics**

An archer shoots an arrow toward a 300 g target that is sliding in her direction at a speed of 2.15 m/s on a smooth, slippery surface. The 22.5 g arrow is shot with a speed of 38.0 m/s and passes through the target, which is stopped by the impact. What is the speed of the ...
*March 28, 2011 by Alexandria*

**physics**

An archer shoots an arrow toward a 300 g target that is sliding in her direction at a speed of 2.45 m/s on a smooth, slippery surface. The 22.5 g arrow is shot with a speed of 40.5 m/s and passes through the target, which is stopped by the impact. What is the speed of the ...
*November 28, 2012 by Anonymous*

**English**

Which quote from "The Morning of June 28, 1948" bes supports the conclusion that the public strongly disliked "The Lottery?" A. "this, as any writer of stories can tell you, is not a usual thing." B. "your story has kicked up quite a fuss around the office." C. "later that day...
*May 18, 2015 by angie*

**physics**

A small ball is set in horizontal motion by rolling it with a speed of 3.00 m/s across a room 12.0m long, between two walls. Assume that the collisions made with each wall are perfectly elastic and that the motion is perpendicular to the two walls. (a)Show that the motion is ...
*March 15, 2007 by sam*

**Chem**

Estimate the equilibrium constant for the weak base (CH3)2NH, if a 1.59×10-2 M aqueous solution of (CH3)2NH has a pOH 2.58 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (CH3)2NH + H2O = (CH3)2NH2+ + OH- I know ...
*October 22, 2010 by Kyo*

**Chemistry**

5.00 mL of 2.00x10^-3M Fe(NO3)3 is mixed with 4.03 mL of 2.00x10^-3M NaSCN and 1.08 mL of 0.1M HNO3, for a total volume of 10.11 mL. a) What is the initial concentration of the Fe(NO3)3 in the mixed solution? b) What is the initial concentration of the NaSCN in the moxed ...
*February 26, 2014 by Dan*

**Statistics**

The soccer team's shirts have arrived in a big box and people start grabbing them. The box contains 7 medium, 12 Large, and 11 extra-large shirts. What is the probability that the first 4 shirts are all extra large? I have been struggling with the problem for an hour and can't...
*October 1, 2013 by Nick*

**physics**

One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has a length of 0.48 m and is uniform. It is hanging vertically straight downward. The end of the rod nearest the floor is given a linear speed v0, so ...
*April 12, 2016 by reghuir*

**physics**

A truck loaded with cannonball watermelons stops suddenly to avoid running over the edge of a washed-out bridge (see figure). The quick stop causes a number of melons to fly off the truck. One melon rolls over the edge with an initial speed vi = 12.0 m/s in the horizontal ...
*February 16, 2011 by Anonymous*

**physics**

A truck loaded with cannonball watermelons stops suddenly to avoid running over the edge of a washed-out bridge (see figure). The quick stop causes a number of melons to fly off the truck. One melon rolls over the edge with an initial speed vi = 12.0 m/s in the horizontal ...
*February 18, 2011 by Anonymous*

**math**

A speed boat is travelling from Florida to Cuba (distance of approximately 380 km), it is directly affected by the water current. Thus, the actual speed of the boat with respect to the ground is the speed of the boat (125 km/h) plus the water current speed, c. a) Develop an ...
*February 25, 2013 by mehwish*

**Physics**

Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from the same point that ...
*September 28, 2014 by Wes*

**Physics**

Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from the same point that ...
*September 28, 2014 by Wes*

**math**

Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from the same point that ...
*September 28, 2014 by Wes*

**physics(*URGENT*)**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*October 6, 2013 by Anonymous*

**physics**

A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart. 1)Find his initial acceleration. 2)Find her initial acceleration. 3)If ...
*February 15, 2012 by HH*

**Science**

A wave is determined to have a frequency of 12 Hz and a wavelength of 8.5 meters. What is the speed of the wave? Show all of your work, including the formula and correct units. I am not really sure how to set up the equation for this. Speed= wavelength x frequency... So would ...
*January 7, 2010 by Anonymous*

**physics (PLEASE READ)**

referring to the previous problem, if you had entered the same sandy patch with a lower speed, say 7.0 m/s, would the patch have the same effect on your speed, say 7.0 m/s, would the patch have the same effect on your speed? that is, assuming the sandy patch causes the same ...
*November 18, 2011 by taylor*

**College math**

Highwq curves. If a circular curve without any banking has a radius of R feet, the speed limit L in miles per hour is L = 1.5 aqrt(R) (a) Find the speed limit for a curve having a radius of 400 feet. (b). If the radius of a curve doubles, what happens to the speed limit? (c.) ...
*April 30, 2011 by Shin*

**Maths**

A boy cycled from his home to a friend's house 24km away at an average speed of 16km/h. Finding his friend absent, he returned home immediatly at an average speed of 12km/h. Find the average speed I know how to find the average speed, just that I need to know how to find out ...
*November 3, 2011 by 10M1*

**Physics**

A 770N woman sitting on a frictionless surface throw a 2.6 kg book at a speed of 35 m/s. What is her recoil speed in m/s?
*December 11, 2009 by Nicole*

**scienced**

how does the race betweebn the tortoise and the the hare the differencde between average speed and instantaneous speed ?
*September 11, 2011 by brianna*

**chemistry**

a speed sign in England reads 30. km/hr,over what speed in mph (miles/hr) would you get a ticket?
*September 27, 2011 by Anonymous*

**Physics (1)**

A 4.1 kg rifle is suspended by strings and fires a 0.0030 kg bullet at a speed of 1500 m/s. What is its recoil speed in m/s?
*October 29, 2011 by Anonymous*

**English**

Which word has the same beginning sound as special? sunny swept sprout speed speed
*February 26, 2013 by Hayden*

**Physics science 1206**

You are coasting on your skateboard at 1.4 m/s and you decide to speed up. if you accelerate at 05 m/s2 (square) for 7.0s what is your final speed?
*March 3, 2013 by Trista*

**Physics**

a 100 gram bullet is fired from a 10 kg gun with a speed of 1000m/sec. what is speed of recoil
*June 11, 2013 by Devin Darkie*

**physical science**

A car travels through a school zone at a speed of 36 m/s was the 45 mi/h speed limit exceeded? yes or no
*January 9, 2014 by Dina*

**chemistry **

At what temperature average speed of nitrogen will be same as the RMS speed of oxygen at 300 kelvin?
*April 26, 2016 by Priyanka *

**pysics**

A BMW convertible travels on the german autobahn at the speed of 128km/h.what is the speed of the car, in m/s and in mi/h.what is the answer.
*June 25, 2016 by len*

**Math**

Over a fixed distance speed r varies inversely as time t. If the speed of a car is 30 mph when the time is 6 seconds what would the speed be of the car if the time was 4 seconds
*July 11, 2013 by Scott*

**physics**

A projectile of mass 0.874 kg is shot straight up with an initial speed of 29.0 m/s. (a) How high would it go if there were no air resistance? (b) If the projectile rises to a maximum height of only 7.70 m, determine the magnitude of the average force due to air resistance. (a...
*April 6, 2011 by Mesho*

**Algebra**

If an object is thrown downward with an initial velocity of v0, then the distance it travels is given by s=4.9t sqrt 2 +v v0t. An object is thrown downward from an airplane 100 m from the ground, with an initial velocity of 6 m/sec. How long does it take ...
*April 15, 2016 by Mai*

**Physics**

Given: Two particles are created in a high-energy accelerator and move off in opposite directions. The speed of one particle, as measured in the laboratory, is 0.580c, and the speed of each particle relative to the other is 0.920c. Problem:What is the speed of the second ...
*April 13, 2008 by Chelsea*

**Physics**

A golfer rides in a golf cart at an average speed of 3.10 m/s for 21.0 s. She then gets out of the cart and starts walking at an average speed of 1.60 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and walking, is 2.10 m/s? I need...
*October 2, 2009 by Kristina*

**physics**

A boat crosses a river of width 98.4 m in which the current has a uniform speed of 1.84 m/s. The pilot maintains a bearing (i.e.,the direction in which the boat points) perpendicular to the river and a throttle settingto give a constant speed of 2.11 m/s relative to the water...
*February 14, 2014 by Treal*

**Biology**

Can you give the speed in the capillaries as a percentage of the speed in the arteries.
*February 6, 2010 by TOM*

**physics**

An object is thrown down with a speed of 80 m/s. What is its speed 2 s later?
*June 19, 2010 by Brittani*

**Physics**

The V.A-3 had an average speed of 96 km/h. Its momentum at this speed was 4.8 x 10(4)kg x m/s. What was the mass of the V.A-3?
*September 12, 2011 by Melissa *

**Calculus(Pre)**

What is linear speed and angular speed (In Trignometry)
*November 17, 2011 by Professor Calculus*

**physics**

What is the ratio of the speed of sound in air at 0°C to the speed at 100°C?
*March 17, 2014 by shirly*

**physics**

you walk 95.0 m at a speed of 1.26 m/s and then run 95.0 m at a speed of 3.61 m/s. what is the average velocity?
*August 21, 2016 by karen*

**physics**

What is the ratio of the speed of sound in air at 0°C to the speed at 100°C?
*May 23, 2014 by tira*

**Physics**

A block of mass 4 kg, which has an initial speed of 2 m/s at time t = 0, slides on a horizontal surface. Find the magnitude of the work that must be done on the block to bring it to rest. Answer in units of J. If a constant friction force of magnitude 5 Newtons is exerted on ...
*November 18, 2015 by Madi*

**physics**

A string under a tension of 59.0 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.0 m/s on a frictionless surface as shown in the figure below. As the string is pulled in, the speed of the rock increases. When the string on the table is 1.00 m...
*February 17, 2015 by Anonymous*

**physics**

A string under a tension of 43.0 N is used to whirl a rock in a horizontal circle of radius 2.25 m at a speed of 20.0 m/s on a frictionless surface as shown in the figure below. As the string is pulled in, the speed of the rock increases. When the string on the table is 1.00 m...
*March 2, 2016 by Kevin*

**Physics**

A string under a tension of 43.0 N is used to whirl a rock in a horizontal circle of radius 2.25 m at a speed of 20.0 m/s on a frictionless surface as shown in the figure below. As the string is pulled in, the speed of the rock increases. When the string on the table is 1.00 m...
*March 2, 2016 by Jack*

**Physical Science**

Good afternoon. Can someone please check if my answers for these questions are correct? Thanks! 1.Explain in terms of force and distance how using a ramp to load boxes into a truck makes work easier. (Ans-) Less force is applied but the distance is longer. 2.A ball sitting on ...
*May 3, 2009 by mysterychicken*

**physics**

referring to the previous problem, if you had entered the same sandy patch with a lower speed, say 7.0 m/s, would the patch have the same effect on your speed, say 7.0 m/s, would the patch have the same effect on your speed? that is, assuming the sandy patch causes the same ...
*November 18, 2011 by taylor*

**Math**

Reid and Maria both play soccer. This season, Reid scored 4 less than twice the number of goals that Maria scored. The difference in the number of goals they scored was 6. How many goals did each of them score?
*February 2, 2012 by Jane*

**Physics**

A small mass attached to a spring oscillates with simple harmonic motion with amplitude of 70mm,taking 13 seconds to make 40 complete oscillations.Calculate the following showing steps; a.Its angular ferquency b.Its maximum speed c.Its maximum acceleration d.Its speed when ...
*April 5, 2012 by Nkamo*

**Differential Equations**

Driver A had been leading archrival B for a while by a steady 3 miles. Only 2 miles from the finish, driver A ran out of gas and decelerated thereafter at a proportional to the square of his remaining speed. One mile later, driver A's speed was exactly halved. If driver B's ...
*February 26, 2013 by Won*

**chemistry**

mass of the metal 7.26g volume of water in the calorimeter 10mL initial temp of water in calorimeter 21.5 degrees C initial temp of metal 95.5 d C final temp in mixture in calorimeter 23.8 D C question: calculate the energy lost by the metal taking into consideration that it ...
*February 28, 2013 by may*

**physics**

A blue puck with a mass of 3.90×10−2 , sliding with a speed of 0.170 on a frictionless, horizontal air table, makes a perfectly elastic, head-on collision with a red puck with mass , initially at rest. After the collision, the velocity of the blue puck is 5.0×10−2 ...
*October 24, 2010 by Anonymous*

**AP Physics**

Two identical, small balls are suspended by separate 0.25m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.0 x 10^-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and, as a ...
*April 13, 2016 by Ben*

**Physics**

Can someone walk me through how to solve this? Any help is much appreciated! Two masses moving along a straight line undergo a front-to-back collision. The masses are m1= 60.0 kg, with initial velocity v1 = 17.0 m/s, and m2 = 26.0 kg, with initial velocity v2 = 7.0 m/s. After ...
*March 22, 2015 by James*

**AP Physics **

Hi! Thank you very much-- I know this is a 2dimensional inelastic collision but i'm not sure how to solve-- "The mass of a blue block is 20% greater than the mass of the green block. Before colliding, the blocks approach each ther with momenta of equal magnitudes and opposite ...
*November 21, 2010 by APpreciative student*

**math**

A baseball pitcher can throw a base ball at 150 ft/s. Can this pitcher hit the 200-ft ceiling of its game dome, if he was capable of giving a baseball an upward velocity of 85 ft/s, from a height of 7 ft? (Assume the ball is traveling as a free-falling body, and g = 32 ft/s2...
*July 19, 2015 by Josh*

**physics**

Tetherball is a game played by kids. The equipment consists of a volleyball on a string, with the other end of the string tied to the top of a post. Kids hit the ball back and forth around the post. Consider a volleyball of total mass 200 g attached to the top of a post by a 2...
*April 29, 2013 by ianian*

**Grade 10 Physics (Acceleration, Speed, Time)**

I just need someone to check my answers to this one review question.. Exams are tomorow so i need them to be checked quickly. An Octopus accelerates at a rate of 0.65m/s/s for a time of 4.8s. How much will the speed of the octopus change? We are trying to find change in speed...
*January 22, 2009 by Cameron*

**Physics**

A ball is thrown vertically up and from the ground with a velocity of 20ms. Calculate: a-The maximum length reached. b-The time to reach the maximum height. c-The time to reach the ground again after the ball is thrown up. d-The velocity reached halfway to the maximum height. ...
*September 23, 2011 by Hauwart*

**Physics**

A grindstone of radius 4.0m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 12 rad/s over 4.0s. Assume that the angular acceleration is constant. What is the average angular speed of grindstone?
*April 2, 2012 by Natasha*

**Physics**

An airplane whose air speed is 600 mi/h is flying perpendicularly to jet stream whose speed relative to the Earth's surface is 100 mi/h. What is the airplane's speed relative to the Earth?
*May 20, 2014 by student 2017*

**journalism check answers**

Pictures can be used to add aesthetics to news stories and....? show emotion illustrate action Both A and B C Videos are beneficial to news stories because they provide visuals and ________. sound (audio) action scenes anchors A All of the following would be considered hard ...
*March 26, 2015 by jimm*

**physics-mechanics-collisions,momentum, impulse**

You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such protons...
*October 28, 2012 by HANNE*

**Algebra**

A can of soda is placed inside a cooler. As the soda cools, its temperature T(x) in degrees Celsius is given by the following exponential function, where is the number of minutes since the can was placed in the cooler. T(x)=-22+44e^-0.03x Find the initial temperature of the ...
*June 15, 2011 by Jessica*

**Physics**

Cn u plz gv explaination 2 d solutions steps by steps briefly? Cz i really dnt understand hw 2 apply d formula wen i revise it nw. [g=10 ms^-2 ] Two particles P & Q, of masses 0.2 kg & m kg respectively, are attached to the ends of a light inextensible string. The particle P ...
*September 29, 2008 by LingSpirit*

**Physics**

On Earth, falling objects accelerate downward at 9.8 meters per second squared. But on another planet, the gravitational acceleration might be quite different. On the Moon, for example, a ball will accelerate at about 1.6 meters per second squared. How would your roller ...
*May 15, 2011 by Jerry Macfadden*

**physics please help**

One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has a length of 0.59 m and is uniform. It is hanging vertically straight downward. The end of the rod nearest the floor is given a linear speed v0, so ...
*November 27, 2010 by roni*

**physic**

1.What is the gravitational force between two trucks, each with a mass of 2.0 x 10^4 kg, that are 2.0 m apart? (G = 6.673 x 10^11 N•m^2/kg^2) 2.Each tire of an automobile has an area of 0.026 m^2 in contact with the ground. The weight of the automobile is 2.6 10^4 N. What is ...
*December 17, 2006 by Jan*

**maths**

The ratio of speed of A and B is 2:3 and A takes 10 minutes more than the time taken by B to reach a destination. If A had walked at triple the speed, and B at half the speed, the difference between time taken by A and B will be: a) 15 minutes b) 20 minutes c) 25 minutes d) 30...
*October 2, 2015 by raj*

**maths**

There are 29 students in the class. 21 students are in base ball team and 12 students are in foot ball team...but some students play both the games..how many students play both games?
*February 8, 2014 by laiba ahmer *

**Algebra**

Each team in a soccer leaguehas played every other team 5 times. Current league standings are: Team A 37 Points Team B 34 Points Team C 28 Points Team D 26 Points Team E 20 Points If a team receives 3 points for a win, 1 point for a tie, and 0 points for a loss, how many of ...
*November 29, 2012 by Jake*

**physics**

A 85 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 3.5 m/s. How fast is he going as he lands on the trampoline, 3.0 m below? If the trampoline behaves like a spring of spring constant 5.2 x 10^4 N/m, how far does he depress it? My ...
*May 28, 2007 by micole*

**Math**

A jar contains 2 orange balls, 5 black balls, and 3 pink balls. Event A = drawing a black ball on the first draw Event B = drawing a pink ball on the second draw If two balls are drawn from the jar, one after the other without replacement, what is P(A and B) expressed in ...
*June 8, 2013 by bubbie*

**balls in a bowl probability**

Bowl one contains 3 black and 2 white balls. Bowl two contains 4 black and 5 white balls. Experiment: A ball is randomly selected from bowl one, its color noted, and it is placed in bowl two. Then a ball is randomly selected from bowl two. a.) What is the probability that the ...
*November 20, 2006 by Aubrey*

**Maths**

At 9.30 a.m., a car left town X for town Y at a speed of 60km/h for the whole journey. At 11 a.m., a lorry started from town Y and travelled towards town X. The speed of the lorry remained the same until it passed the car at 12.30 p.m. The lorry passed the car at midpoint ...
*December 30, 2013 by Sarah*

**physics**

At what temperature do the molecules of nitrogen gas have an rms speed of 34 m/s? 34 m/s is a typical highway speed for a car.
*November 22, 2010 by lisa*

**Physics**

A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore? A.8 km/h B.25 km/h C.30.4 km/h D.32.8 km/h
*November 23, 2010 by james*

**physics**

a girl of mass 40 kg is skating at a constant speed of 1 m/s. supposed she doubles her speed, what will be the change in her kinetic energy?
*January 25, 2011 by Anonymous*