myra
Most popular questions and responses by myra
physics
Four 7.5 kg spheres are located at the corners of a square of side 0.60 m. Calculate the magnitude and direction of the gravitational force on one sphere due to the other three.
asked on May 27, 2012 
physics
A wet bar of soap slides freely down a ramp 2.0 m long inclined at 6.8o. How long does it take to reach the bottom? Neglect friction.
asked on April 11, 2012 
geometry
Determine whether triangle PQR is congruent to triangle STU given the coordinates of the vertices. Explain. P(4,0),Q(2,3)r(1,4),S(1,4), t(1,1),u(4,6)
asked on June 25, 2016 
math
When 6 gallons of gasoline are put into a car's tank the indicator goes from 1/4 of a tank to 5/8. What is the total capacity of the gas tank?
asked on August 28, 2012 
Informal Logic
21{4[1(10)54]}> Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. heavy : weight (Points : 1)
asked on September 11, 2011 
Math (statistics)
The probability of obtaining heads on a biased coin is 0.4. The coin is tossed 600 times. a. i. Write down the mean number of heads (240) ii. Find the standard deviation of the number of heads (12) b. Find the probability that the number of heads obtained
asked on March 16, 2016 
physics
A +5.7 C and a 3.5 C charge are placed 25 cm apart. Where can a third charge be placed so that it experiences no net force? (Restrict your analysis to a linear one.)
asked on May 27, 2012 
algebra
Melissa is 31 years younger than her dad. The sum of their ages is 61. How old is Melissa? How old is her dad?
asked on October 6, 2009 
physics
An 8.0 kg puck floating on an air table is travelling east at 15 cm/s. Coming the other way at 25 cm/s is a 2.0 kg puck on which is affixed a wad of bubble gum. The two slam headon into each other and stick together. Find their velocity after the impact.
asked on May 27, 2012 
physics
Two identical charges, q1 = q2 = 6.0 C, are separated by 1.0 m. a. Calculate the electric field and electric potential difference at point P, midway between them. b. Replace one of the charges with a charge of the same magnitude but opposite sign and
asked on May 15, 2012 
PHYSICS
Two balls collide on a horizontal, frictionless table. Ball A has a mass of 0.175 kg and travelling at 1.20 m/s [E 40o S]. Ball B has a mass of 0.225 kg and is travelling at 0.68 m/s [E]. The velocity of ball B after collision is 0.93 m/s [E 23o S].
asked on May 10, 2012 
physics
If the electric potential energy between two charges of 1.5C and 6.0 C is 0.16 J, what is their separation?
asked on May 15, 2012 
algebra
It took Todd 11 hours to travel over pack ice from one town in the Arctic to another town 330 miles away. During the return journey, it took him 15 hours. Assume the pack ice was drifting at a constant rate, and that Todd’s snowmobile was traveling at a
asked on January 12, 2017 
Finance
suppose the interest rate is 8% APR with monthly compounding. what is the present value of the annuity that pays $100 for every 6 years?
asked on September 14, 2014 
physics
An electron is accelerated in the uniform field E = 2.0 x 104 N/C between two parallel charged plates (Negative charged plate is on the left and positively charges plate is on the right). The separation of the plates is 1.5 cm. The electron is accelerated
asked on May 27, 2012 
physics
A space shuttle orbiting Earth at an altitude of 295 km completes an orbit in 90.0 min. Calculate its acceleration and compare it to the acceleration at Earth’s surface.
asked on April 11, 2012 
physics
Two equal weight monkeys each hang from the ends of a rope passing over a weightless, frictionless pulley. If one accelerates up the rope, what happens to the other?
asked on April 11, 2012 
social studies
in what two regions do the appalachians lie?
asked on October 20, 2009 
physics
Show that if a satellite orbits very near the surface of a planet with period T, the density (mass per unit volume) of the planet is p(rho)=3pi/(GT)^2
asked on May 27, 2012 
physics
Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher
asked on May 15, 2012 
physics
If the mass of the Moon is 7.4 x 1022 kg and its radius is 1.74 x 106 m, compute the speed with which an object would have to be fired in order to sail away from it, completely overcoming the Moon’s gravity pull.
asked on May 27, 2012 
Math
Charles is going camping with his family their campsite is 5/8 mile away they walk a steady speed of 1 7/8 miles per hour how many minutes will it take them to get to the campsite?
asked on March 1, 2016 
physics
If a negative charge is initially at rest in an electric field, will it move towards a region of higher potential or lower potential? What about a positive charge? How does the potential energy of the charge change in each case?
asked on May 27, 2012 
physics....
A 32.0 kg child descends a slide 4.00 m high. She reaches the bottom with a speed of 2.40 m/s, was the mechanical energy conserved? Explain your reasoning and identify the energy transformations involved.
asked on May 9, 2012 
physics
A 1000 kg car is travelling on the highway at a constant speed of 110 km/h. The highway makes a turn that is banked at an angle of 10o and has a radius of 160 m. What is the coefficient of friction between the car tires and the pavement in the curve?
asked on April 25, 2012 
Business communication
A final notice collection letter from an appliance manufacturer to an appliance dealer, sent 10 days before initiation of legal collection procedures. Who is the audience?
asked on October 10, 2015 
physics
Two toboggans are pulled across the ice with a force of 1.2 x 102 N. The rope of the toboggan makes an angle of 55o with the horizontal. The first toboggan has a mass of 25 kg, and the second toboggan has a mass of 16 kg. Assume that the ice surface is
asked on April 25, 2012 
chemistry
When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to 1.0500 x 10^4 K. According to the Clausius Clapeyron equation, Hvap is kJ/mol. ?
asked on February 1, 2008 
physics
Jane hopes to meet Tarzan by sliding down a rope, made of nylon stockings, from her treetop home. The stockings will break if the tension in them exceeds 400 N. Jane has a mass of 60 kg. What is the maximum acceleration with which she can slide down the
asked on April 25, 2012 
chemistry
How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 gallons of a 4.61 m solution with a density of 1.88 g/mL? i think that this is a dimensional analysis type of question. 1 gal ~ 3485.41 ml. i just need help with the set up, i think...
asked on May 11, 2011 
PHYSICS
What major obstacle did Henry Cavendish face when measuring the gravitational force between two objects on Earth? A) The masses required had to be very small. B) The gravitational force between the two masses was very small. C) The distance between the two
asked on May 15, 2012 
physics
A mass of 300 g is attached to a string that is 1.21 m in length. The mass is whirled in a horizontal circle on a surface and completes 7.00 rotations in a time of 2.71 s. The force of tension in the string is 92.7 N. Determine the force of friction
asked on April 25, 2012 
physics
A motorcycle stunt rider wants to do a looptheloop within a vertical circular track. If the radius of the circular track is 10.0 m, what minimum speed must the motorcyclist maintain to stay on the track? Suppose the radius of the track was doubled. By
asked on April 11, 2012 
Math
There are 28 pears on 4 trees. There are the same number of pears on each tree. How many pears on each tree? If Jomel picks 10 pears, how many pears will be left on the trees? My answers: 7 pears on each tree. 18 pears will be left on the trees. Is this
asked on November 1, 2011 
English
Ethical dilemma or an ethical lapse? Your supervisor has asked you to withhold important information that you think should be included in a report you are preparing. Obeying her could save the company serious public embarrassment, but it would also violate
asked on October 10, 2015 
algebra
20+2x/5x For what value of x is the rational expression below equal to zero?
asked on November 16, 2012 
physics
Devise a method for measuring the coefficient of friction between two surfaces using an inclined plane
asked on April 11, 2012 
Estimating Quotients
Carl needs to estimate the quotient 547÷92. Explain how Carl could use compatible numbers to make a reasonable estimate.
asked on September 28, 2014 
geometry
If J is the midpoint of MN and JM=5x5 and JN=4x+2, find the length of MN.
asked on October 3, 2012 
geometry
Points A, B, and C are collinear, and C is between A and B. If AB=8x4, BC=x+2, and AC=x^2, find the values of x.
asked on October 3, 2012 
physics
It is fairly easy to catch a 20 N steel weight dropped from a height of 0.25 m or so. But if you attempt to catch the weight while resting your hand flat on a table, you are likely to be injured. Explain.
asked on May 27, 2012 
physics
Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher
asked on May 16, 2012 
physics
You want to design a curve, with a radius of curvature of 35.0 m, so that a car can turn at a velocity of 15 m/s on it without depending on friction. At what angle must the road be banked?
asked on April 11, 2012 
Informal Logic
11{1[2(06)06]}> Reporter: A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political candidates can receive. However, a survey of candidates running for mayor, governor, and senate seats
asked on September 11, 2011 
Algebra
0.3x0.2y=4,0.5x+0.5y=15/9 solve
asked on November 7, 2009 
algebra 1
Solve inequaity: 2x/7 8>9 Please need help, cant figure this one out,thank you kindly
asked on May 19, 2014 
physics
Imagine a car involved in a headon crash. The driver, whose mass is m, is to be brought uniformly to rest within the passenger compartment by compressing an inflated air bag through a distance sc. Write an expression for the average force exerted on the
asked on May 27, 2012 
physics....plzzz help
To move a charge of +180 nC from a position where the electric potential difference is +24 V to another position where the potential difference is +8 V, how much work must be done?
asked on May 15, 2012 
physics
A car is driving up a curvy mountain road. If the car navigates at the same speed two corners that have the same radius of curvature, but the second curve is banked at twice the angle of the first, what effect will this have on the vehicle?
asked on April 25, 2012 
Trigonometry
Suppose that after you are loaded into a FerrisWheal car, the wheel beguins turning at 3 revs/min.The wheal had a diameter of 20m and the bottom of the seat of the wheel is 2m above the ground. Express the hight of the seat above the ground as a function
asked on December 4, 2008 
World History
Why did Napoleon Bonaparte crown himself?
asked on July 6, 2018 
geometry
If P is the midpoint of RS and RS=17x8 and RP=8x+1, find the values of x and PS.
asked on October 3, 2012 
physics
Why do you lose weight when you enter a tunnel passing through a mountain tunnel or walk inside a skyscraper?
asked on May 27, 2012 
priciples of business
how to make a project presentation on , International Organization Enviornment
asked on September 16, 2011 
lgebra
How do I solve this litreal equation? Solve q = 1  p for p in terms of q.
asked on October 18, 2010 
chemistry
How many compounds would there be in a combinatorial library of ester compounds made from every isomer of monofluorobenzoic acid and every possible alkyl alcohol with 4 or less carbon atoms? 1. 11 2. 24 3.12 4.21 i know its either 21 or 24 but im not sure
asked on February 18, 2010

Algebra
4x+6=90 4x=84 x=21
posted on May 1, 2018 
College Physics
asdad
posted on May 31, 2017 
Chemistry
13.2
posted on February 1, 2017 
parentheses
Where do you insert parentheses in the problem,53×2+7=6
posted on December 31, 2016 
math
37.5
posted on November 25, 2015 
chemistry
When iron ii turned blue it indicates that there was mixture with oxygen which increased the number to iron iii
posted on November 19, 2015 
government
. Describe two ways the federal bureaucracy helps to shape laws passed by Congress.
posted on December 20, 2012 
physics
we are hurt because wen the weight falls on our hand it applies force on our hand but when the hand tries to pass the force over to the table it does not pass . this is because the force of the table on the hand is higher than the force of the hand on the
posted on May 27, 2012 
physics
the square shape is for mu.....
posted on May 16, 2012 
physics
Thanx elena for all the answers :)
posted on May 16, 2012 
physics
thanx elena :)
posted on May 16, 2012 
physics....plzzz help
thanx elena :)
posted on May 16, 2012 
physics
thanx elena :)
posted on May 16, 2012 
PHYSICS
can u pls explain to me y is it the and B) ....thank you very much elena .... :)
posted on May 16, 2012 
physics
m nt good at physics .....i don't understand physics so well .....i try to do the problems but they don't make sense at all .....so i ask it here ...and wen someone helps me ...i understand them and then only write them ......m not cheating .....i just
posted on May 15, 2012 
physics
bt how do u find the mass......the mass is not given in the question
posted on April 12, 2012 
physics
Thank you.... :)
posted on April 11, 2012 
Math
thanks
posted on November 1, 2011 
A U
Detective: The robbery at the mall was carried out by a mall employee acting alone roughly one hour after the mall closed last Saturday night. The only employees present at the mall at the time of the robbery were security guards Evans and Clark. Since the
posted on September 11, 2011 
chemistry
is the answer supposed to be 87297?
posted on February 1, 2008 
MATH
100.231
posted on September 13, 2007