07/09/16

Assume that wave A and B are examples of electromagnetic radiation and that the wavelength of B is twice that of A.
Which of the following statements is true?    1. Wave A is traveling at a greater speed than wave B through a vacuum 2. The wavelength of A is directly related to the photon energy associated... more
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07/09/16

A one electron species, Xm, where m is the charge of the one electron species and X is the element symbol, loses its one electron from its ground state when it
absorbs 1.96E-17 J of energy. Using the prior information, the charge of the one electron species is ______.
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07/09/16

Mechanics question please help
A particle of mass m suspended from a fixed point A by a light inextensible string which passes through a small light ring R. The ring is attached to a fixed point B, at the same horizontal level... more
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07/08/16

Find area of rectangle with vertices (5,2) (5,-6) (0,-6) (0,2)
I know you can solve this with the distance formula but are there any faster ways?
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07/08/16

Why were the French and British troops relieved when the Americans arrived in the western front?
a.It meant that there were more troops for trench warfare.c.More troops coming to the area meant that the French and British could send their troops home.b.The Americans were more advanced then the... more
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07/08/16

Caculating minimum cost of running cable to a house.
If it cost 2.1 cents per foot to run cabel along a road and 3.8 cents per foot to run cable off the road. what is the minimun cost to run cable if a house is two miles from the road and the cable... more
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07/08/16

A car accelerates uniformly from 20 Km/h to 35 Km/h in 5 s.
 Calculate(i) the acceleration and (ii) the distance covered by the car in that time.
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07/07/16

A plane flies from A to B on a bearing of N75E for 810 miles.Then it flies from point B to point C on a bearing of N32E for 648 miles.Find the distance from A
A plane flies from A to B on a bearing of N75E for 810 miles.Then it flies from point B to point C on a bearing of N32E for 648 miles.Find the distance from A to C.
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07/07/16

Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?
Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?
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07/07/16

At 35 cents per foot how much would it make for a hundred feet.
I'm running cable at 35 cents per foot.Im curious as to how much I will have to run to make some good money.
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07/06/16

Physics problem
A cross-country rally car driver sets out on a 100.0 km race. At the halfway marker (50.0 km), her pit crew radios that she has averaged only 80.0 km/h. How fast must she drive over the remaining... more
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07/06/16

Solving a percent mixture problem
a scientist has two solutions, which she has labeled solution A and Solution B. Each contains salt. She knows that Solutuin A is 60% salt and Solution B is 85% salt. She wants to obtain 130 ounces... more
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07/06/16

algebra downstream/ upstream problem I am having trouble with
Brianna rows a boat downstream for 216 miles. The return trip upstream took 18 hours longer. If the current flows at 3 mph, how fast does Brianna row in still water?
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07/05/16

Need help ASAP with law of sines and finding side b of triangle using law of sines please help
Find the value of side b for each triangle using The Law of Sines:  1)A=24.3 degrees C=54.6 degrees a=2.68 2)B=10 degrees C=135 degrees c=45 3)A=10 degrees B=60 degrees a=7.5  
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07/05/16

you want to make 500kg to of 28% alcohol solution by mixing 40% alcohol solution and 20% alcohol solution. how many kg of each substance does he need?
i have the anwser but i dont know how to get there plz help
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07/05/16

Solve and show work please
You are saving money for a new car. Your parents give you $2,000 to help your saving get started and you can save $100 weekly. Write a linear equation that determines your savings (y) for a given... more
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07/05/16

pre calc BEARING problems, multiple questions, please answer ASAP, I am very confused
1)The bearing from A to B is 40°. Determine the bearing of A from B.  2) If the beating from A to B is 120 degrees. Determine the bearing of A from B. 3) Describe in words what the bearing "N20... more
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07/05/16

Car Math Question?
A car is traveling at a constant speed. After 2.5 hours, the car has traveled 80 miles. If the car continues to travel at the same constant speed, how many hours will it take to travel 270 miles?
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07/05/16

Determine whether one figure is a dilation of the other ?
Determine whether one figure is a dilation of the other. Justify your answer: Quadrilateral DEFG has sides measuring 16m, 28m, 24m, and 20m. Quadrilateral D'E'F'G' has sides measuring 20m, 35m,... more
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07/05/16

The length of a rectangle is 1 ft less than two times its width. The perimeter of the rectangle is 34 ft. What is the length of the rectangle?
a)6 b)11c)36d)equatione)None of these
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07/04/16

If Jan can weed the garden in 2 hours and her husband can weed it in 1 hour and 30 minutes, how long does it take them to weed it together?
Work problem where it is set up using fractions
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07/04/16

Which set of numbers could be the lengths of the sides of a triangle?
A. { 6,7,13} B. {5,5,11} C. {12,13,20} D. {3,6,9}
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07/04/16

Finding Joules with Kinetic energy
The kinetic energy K of a moving object varies jointly with its mass M and the square of the velocity V. If an object weighing 11 kilograms and moving with a velocity of 10 meters per sechas a... more
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07/04/16

A girl moves along the boundary of a square field of side 20m in 80 s. What will be
A girl moves along the boundary of a square field of side 20m in 80 s. What will be the magnitude of displacement at the end of 200s? Also calculate average velocity.
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07/04/16

Earth revolves around the Sun in a circular orbit with a uniform speed. Is this motion uniform or accelerated?
Earth revolves around the Sun in a circular orbit with a uniform speed. Is this motion uniform or accelerated?
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