Tuesday
October 21, 2014

Posts by Steven


Total # Posts: 480

physics
A block of mass m1 = 2.4 kg slides along a frictionless table with a speed of 8 m/s. Directly in front of it, and moving in the same direction, is a block of mass m2 = 5.0 kg moving at 2.8 m/s. A massless spring with spring constant k = 1140 N/m is attached to the near side of...
October 17, 2014

Physics
Damon, Thank you so much
October 15, 2014

Physics
A 38.0-kg boy, riding a 2.37-kg skateboard at a velocity of +5.07 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.06 m/s, 10.35° above the horizontal. Ignore any...
October 15, 2014

Physics
The speed of the car at the base of a 30 ft hill is 45 mi/h. Assuming the driver keeps her foot off the brake and accelerator pedals, what will be the speed of the car at the top of the hill?
October 15, 2014

program planning
d
October 15, 2014

program planning
a
October 15, 2014

program planning
B
October 15, 2014

Physics
The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 228 km/h. a) How many degrees from west should the aircraft head? Let clockwise be positive. Answer in units of degrees. b) What ...
October 15, 2014

program planning
C
October 14, 2014

Physics
A basketball player makes a jump shot. The 0.580-kg ball is released at a height of 1.90 m above the floor with a speed of 7.18 m/s. The ball goes through the net 3.05 m above the floor at a speed of 4.23 m/s. What is the work done on the ball by air resistance, a ...
October 11, 2014

Physics
ahhh thanks but just a tad late lol, due already
October 10, 2014

Physics
A camera falls from a blimp that is 399 m above the ground and rising at a speed of 9.75 m/s. Find the maximum height reached by the camera with respect to the ground. The acceleration of gravity is 9.8 m/s^2.Answer in units of m. b)Find the speed at which it hits the ground....
October 10, 2014

Physics
Buddy is unloading 7kg cans using a 45 degree downward ramp. The ramp was made slippery by the a detergent spill before. Buddy can push the cans off of his truck with an initial velocity of .2 m/s and it moves as 1.2 m/a by the time it reaches the lowest point on the ramp. The...
October 7, 2014

Physics
The drawing below shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a speed of 18.5 m/s via ...
October 3, 2014

Physics
A 7300-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the perigee and is at the far ...
October 3, 2014

PHYSICS
Starting from rest, a 2.0 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.36 N on it. This force does +2.5 10-4 J of work on the flea. -How far does the flea move while it's pushing off?
October 3, 2014

PHYSICS
nvm I solved it
October 3, 2014

PHYSICS
A golf club strikes a 0.041-kg golf ball in order to launch it from the tee. For simplicity, assume that the average net force applied to the ball acts parallel to the ball's motion, has a magnitude of 6400 N, and is in contact with the ball for a distance of 0.012 m. With...
October 3, 2014

Physics
The drawing below shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a speed of 18.5 m/s via ...
October 3, 2014

Physics
A 36-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 185 J from 460 J. How high does she rise during this interval? Neglect air resistance.
October 3, 2014

Physics
A 7300-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the perigee and is at the far ...
October 3, 2014

College algebra
There were 40,000 people at a ball game in Los Angeles. The days receipts were 298,000. How many people paid $12.00 for reserved seats and how many paid $5.00 for general admission?
October 1, 2014

Reading/language arts
help
September 27, 2014

Reading/language arts
Write a sentence for the given topic, using a form of one of the following linking verbs in each sentence: smell, sound, feel, taste, grow. Use at least one predicate noun or predicate adjective in each sentence. 1) (dificulty or ease of writing) can you please help me by ...
September 27, 2014

US History
truck drivers
September 27, 2014

Physics
Consider two spherical stones with same density (mass per unit volume). The larger stone has radius R = 8.58 cm and the smaller stone has radius r = 3.37 cm. Find the ratio of the terminal speed in air of the larger stone to that of the smaller stone.
September 25, 2014

Physics
13.36 m/s^2
September 25, 2014

Physics
Air rushing over the wings of high-performance race cars generates unwanted horizontal air resistance but also causes a vertical downforce, which helps the cars hug the track more securely. The coefficient of static friction between the track and the tires of a 650-kg race car...
September 25, 2014

Physics
Vx=Ux+at Vx=16.1-(.65*9.81)(1.2) Vx=8.4482
September 25, 2014

Physics
Traveling at a speed of 16.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of the automobile after 1.20 s have elapsed? Ignore the effects of ...
September 25, 2014

math
using comparative thinking which equations are true a.50+64=62+48 b.50+64=62+62 c.50+64=124+52 d.50+64=66+52
September 24, 2014

PHYSICS
The weight of an object is the same on two different planets. The mass of planet A is only thirty-five percent that of planet B. Find the ratio rA/rB of the radii of the planets.
September 20, 2014

Physics
An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.06 105 m/s to a final velocity of +2.03 106 m/s while traveling a distance of 0.034 m. The electron'...
September 20, 2014

physics
A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.850 m/s at an angle of 34.3° above the table, and it lands on the magazine 0.0780 s after leaving the table. Ignore air resistance. How thick is the magazine? ...
September 13, 2014

Physics
Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 5.53 m. The stones are thrown with the same speed of 8.62 m/s. Find the location (above the base of the ...
September 13, 2014

Physics
How long is Mayra, a ballerina, in the air when she leaps striaght up with a speed of 1.23 m/s?
September 11, 2014

MAT 222
-10 < -2 + 8x < 22 compound inequalities
June 23, 2014

Chemistry
how many moles of oxygen are needed to react with 3.5 moles of isopropyl alcohol, C3H7OH
June 5, 2014

Multiple Choice
Physics 2. Which of the following is equivalent to one ampere? (Points : 1) 10 s/10 C 10 C/10 m 1.5 C/1.5 s 15 C/10 s Question 3.3. A stream of moving charges results in a current of 5.6 A. How long does 116 C of charge take to flow past a fixed point? (Points : 1) 2.0 s 5.6 s...
May 8, 2014

math
write and solve an equation to find the missing dimension of the rectangular prism. Volume= 1km cubic L=3/4 km W=2/3 km H= ?
April 28, 2014

Biology
your welcome
April 28, 2014

Biology
yes its hard to pick between b and d.
April 28, 2014

Math
0.30 rounded
April 28, 2014

Math
7x7x2=28 cubic inches
April 28, 2014

Math
A calendar that has one page per day is 7 inches long, 7 inches wide, and 2 inches high. What is the volume of one page of the calendar? Round your answer to the nearest thousandth.
April 28, 2014

Math
help MS.SUE
April 28, 2014

Math
what happens to the volume of a rectangle if you multiply the length, the width, and the height by 2?
April 28, 2014

Math
HELP!!!!!!!!!!!!!!!!!!
April 28, 2014

Math
What happens to the volume of a rectangular prism length, the width, and the height by 2?
April 28, 2014

math
HELP PLS I NEED TO DO HOMEWORK.
April 28, 2014

math
A cube with side length 4 centimeters is 25% full of sand.What is the volume of the sand?
April 28, 2014

Math
A filling cabinet is 35 centimeters by 70 centimeters by 115 centimeters. The bottom drawer is 30% of the volume of the filling cabinet. What is the volume of the bottom drawer?
April 28, 2014

reading
YES good job! Nice Essay! i would give it an A+
April 28, 2014

reading
i would add "Many woman suffer but Ida Tarbell changed that".
April 28, 2014

reading
youre right i agree
April 28, 2014

Science
1. How does sea-floor spreading occur? A. New materials are being added to the asthenosphere. B. Earthquakes brake apart the ocean floor. C. Sediments accumulate at the area of spreading. D. Molten material beneath Earth's crust rises to the surface.*
April 22, 2014

math
The director of the center has asked you to design a garden. The director has asked you to design different sections of the garden that meet the following: Section 1 must be shaped like a square. Section 1 must have an area between 26 square feet and 50 square feet. section 2 ...
April 13, 2014

chemistry
You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1896 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute it to 250.0 mL. You then take a 10.00 mL ...
April 11, 2014

science
Describe DNA replication in prokaryotes. Include the major steps for origins of replication, unwinding DNA, and synthesis of new strands. Include at least 1 simplified diagram.
April 8, 2014

science
Using your knowledge of physiology, genes and evolution, discuss organism adaptations to the environment using clear and specific examples.
April 8, 2014

science
22. Given that humans thermoregulate, explain why your skin is cooler than your body core.
April 8, 2014

Math
Monique is making cookies for the pajama party at her house. She has 3-1/2 cups of sugar. The recipe calls for 3/4 cup of sugar for one batch of cookies. Write an equation that can be used to find c, the total number of batches of cookies she can make.
April 7, 2014

Math
What is the distance between (-2,-5) and its reflection over the x-axis?
April 7, 2014

Math
thanks
April 7, 2014

Math
At a baseball stadium, every eighth person received a coupon for free popcorn. Every thirtieth person received a free hot dog. WHich person was the first to receive both free gifts?
April 7, 2014

Physics
All I'm looking for is confirmation that I correctly solved the problem. I know that I can use the formula: λ(wavelength) = v/f When I put in the numbers it gives me 5.666666666666667, which I then round up to 5.7. Is 5.7m the correct answer?
March 19, 2014

Physics
Bats chirp at a high frequency which humans cannot hear. They use the echoes to detect small objects, such as insects, as small as one wavelength. If a bat were to emit a chirp at a frequency of 60.0 kHz and the speed of sound waves in the air are 340 m.s, what is the size in ...
March 19, 2014

chemistry
thank you!
March 17, 2014

chemistry
A laboratory instructor gives you a test tube containing Ag+ ,Ba 2+ , and Cu 2+ ions. Devise a reaction scheme that would allow you to selectively precipitate each of these ions. Write a balanced net ionic equation for each precipitation reaction.
March 17, 2014

college chemistry
Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
March 5, 2014

chemistry
Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
March 5, 2014

science
Two forces of 5 N and 12 N respectivlely act on the same point. Show how to determine the magnitude of the resultant by using the tail to head and tail to tail methods and pythagoras theorem.
February 22, 2014

civics
In the Battle of _______, a disastrous charge against forces holding Cemetery Ridge led to Confederate defeat.
February 20, 2014

Math
Never mind, I figured it out myself!
February 5, 2014

Math
P.S. Double Bogey +2 Bogey +1 Par 0 Birdie −1 Eagle −2 (you might need this)
February 5, 2014

Math
I don't really understand this, could someone help me solve it? a) In her first round as a professional golfer, Michelle Wie made 12 pars, 4 birdies, and 2 bogeys. Refer to the chart of golf terms on page 336. How many strokes above or below par was she that round? b...
February 5, 2014

Math
A) 1/4 B) 1.25 pounds C) 8 Ounces (oz)=1 pound,approx 1.6 or 1.7 pounds per bird feeders. See if you can figure this on your own
February 5, 2014

computer Science
17 You purchase a used optical drive from a second and store replace a single optical drive that has gone bad on your desktop. How would you set the jumper? a. Single b. Cable select c. Master d. Slave
February 3, 2014

computer Science
17 You purchase a used optical drive from a second and store replace a single optical drive that has gone bad on your desktop. How would you set the jumper? a. Single b. Cable select c. Master d. Slave
February 3, 2014

computer Science
14 Your brother is going to serve in the military overseas for four years and asks you about storing his computer in a public storage facility while he is away. The storage unit is not temperature controlled. What could be the negative impact of doing this? a. The internal ...
February 3, 2014

computer Science
14 Your brother is going to serve in the military overseas for four years and asks you about storing his computer in a public storage facility while he is away. The storage unit is not temperature controlled. What could be the negative impact of doing this? a. The internal ...
February 3, 2014

Science
and also how? (if it even does)
February 2, 2014

Science
Does foam prevent convection? If not, what does it prevent? (radiation and conduction)
February 2, 2014

computer Science
20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says “'invalid specification”. What does the error mean?” a. an attempt to overclock the primary drive has failed...
January 28, 2014

computer Science
18 You started your new job as a PC tech and are at a customer’s house. The computer has failed to boot. The fan is running but the POST fails every time. What is the best thing to do to possibly find quickly? a. Check the electrical outlet the computer is ...
January 28, 2014

computer Science
20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says “'invalid specification”. What does the error mean?” a. an attempt to overclock the primary drive has failed...
January 22, 2014

psychology
20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says “'invalid specification”. What does the error mean?” a. an attempt to overclock the primary drive has failed...
January 22, 2014

Discrete Math
A bag contains 5 red marbles, 4 yellow marbles, 3 green marbles, 2 orange marbles and 2 purple marbles. If three marbles are removed, what is the probability that at least one of them is red?
January 19, 2014

Math
Ignore this one, I accidently posted a second one
January 12, 2014

Math
How would you find the area of a shape shaped like a candy cane?
January 12, 2014

Math, area
Ok, thanks!
January 12, 2014

Math, area
one of those oval shaped, racecar/track and field tracks
January 12, 2014

Math, area
Along with this question, how would you find the area of the outer-part of a racing track?
January 12, 2014

Math, area
How would you find the area of a shape shaped like a candy cane?
January 12, 2014

math
5 quarters (1.25)+23 dimes(2.30)
January 12, 2014

social studies
I was wondering, what are some similarities between Hudson Bay Company and the Northwest Company
January 7, 2014

math help please...
1.You want to use the interval method to solve a rational inequality. Explain how to find the intervals. 2.Explain how the interval method works. 3.Explain in your own words what a reciprocal function is.
January 6, 2014

thank u steve
thanks
January 6, 2014

someone help me fast please...
someone do it fast please i need it tomorrow, please do it.
January 6, 2014

math
1.How is the maximum or minimum point of the original quadratic function related to the maximum or minimum point of its reciprocal function? 2.How can you use the leading coefficient of the original quadratic function to tell you whether its reciprocal will have a maximum or ...
January 6, 2014

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