12/18/16

The Question is below
Two buses left town A for town B at the same time. The speed of one of the buses was 10 mph greater than the speed of the other bus. In 3.5 hours one bus reached town B, while the other bus was... more
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12/15/16

A semi ellipse bridge is represented by the equation x^2/400 + y^2/144 =1. If the height is increased 1.5x and the width is increased 2x what is new equation?
choices are    x^2/800 + y^2/216 = 1   x^2/600 + y^2/288 = 1   x^2/900 + y^2/576 =1    x^2/1600 + y^2/324 =1   Thanks!
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12/13/16

Rewrite the complex number in rectangular form, a + bi.
Rewrite the complex number in rectangular form, a + bi. z=(sqrt 2)cis(105 deg)=?   
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12/11/16

Suppose that the profit (in dollars) from the sale of Kisses and Kreams is given by P(x, y) = 20x + 6.9y − 0.005x2 − 0.025y
Suppose that the profit (in dollars) from the sale of Kisses and Kreams is given byP(x, y) = 20x + 6.9y − 0.005x2 − 0.025y2where x is the number of pounds of Kisses and y is the number of pounds of... more
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12/10/16

voltage physics
A proton is travelling at a speed of 4 x 105 m/s moves into a series of charged parallel plates as shown below. a) What is the impact speed on the third plate? (Plate 1 is 0V, plate 2 -1000V, plate... more
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12/10/16

CRT's question
In a CRT, the deflection on the screen is 2.4 cm when the accelerating voltage is 480 V and the deflecting voltage is 36 V. What deflection will you see in the screen if the accelerating voltage is... more
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12/10/16

CALCULUS QUESTION
A ball is thrown upwards with an initial velocity of 48 feet/sec from the top of a 160 foot tall building. Assuming that the only force affecting the ball during travel is from gravity, which... more
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12/08/16

What is the tension in cable A and cable B?
Joe wishes to hang a sign weighing 950 N so that cable A attached to the store makes a 30 degree angle with the wall. Cable B is horizontal and attach to an adjoining building. What is the tension... more
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12/07/16

Find the resultant of the vectors A, B, and C
Vector A has magnitude 58 units and is inclined to the positive axis of x at 42 degrees. Vector B has magnitude 36 units and is inclined to the positive axis of x at 121 degrees. Vector C has... more
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12/05/16

I'm stuck on my physics homework, please help!
1. The frequency of light coming out from a laser source is 368 MHz. What is the wavelength corresponding to the light in meter provided that the speed of light inside the medium is 1.8 x10^8 m/s?... more
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12/05/16

How much heat would be needed to completely evaporate 43.5 g of boiling water at a temperature of 100 °C?
Express your answer in units of joules.
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12/05/16

Solar cells contain a material that absorbs electrons and gives off light
I need help please. can someone please help me. please. please. please
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11/30/16

physics homework help
A ball rolls horizontally off a table with an initial speed of 2.45 m/s. The ball struck the floor with a horizontal displacement from the table of 1.3 m determine the height of the table. Show all... more
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11/30/16

physics homework
An arrow is fired horizontally from the top of a 50.0 vertical cliff and lands 120 m away. At what speed was the arrow fired? Show your work please
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11/30/16

Physics Homework Help
A projectile travels above level ground. The initial vertical component of its velocity is 0.90 m/s and then initial horizontal component of its velocity is 0.60 m/s. Calculate the time the project... more
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11/29/16

Physics problem need help
A 9.10 kg particle is subject to a net force that varies with position as shown in the figure. The particle starts moving at x = 0, very nearly from... more
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11/29/16

PHysics question
A 4.60 kg particle moves along the x axis. Its position varies with time according to x = t + 1.8t3, where x is in meters and t is in seconds (a) Find the kinetic energy at any time t. (Accurately... more
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11/28/16

physics help
a ball is dropped from a vertical height of 45 point. How long will it be in the air? Show your work please
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11/28/16

physics help
 A car has an initial velocity of +30.0 m/s and undergoes an acceleration of -5.00 m/s squared for 5.00 seconds. What is the displacement after the acceleration? And what is the velocity after the... more
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11/28/16

physics help
A water balloon is dropped on the bull's-eye target from a stationary hot air balloon. The water balloons 353 m above the target. If the water ballopn accelerates downward at 9.81 m/s squared, how... more
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11/27/16

Physics: Work, Kinetic Energy, and Energy Lost to Friction
A 1.00-kg block is pushed along a rough horizontal floor with a horizontal force of 5.00 N for a distance of 5.00 m. If the block is moving at a constant velocity of 4.00 m/s, find... The work... more
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11/17/16

A certain​ houseplant's growth,​ G, in​ inches, varies directly as the number of weeks it has been​ growing, W.
A certain houseplant's growth, G, in inches, varies directly as the number of weeks it has been growing, W. a. Write an equation that expresses this relationship. b. This houseplant grows at a... more
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10/22/16

How are potassium-39, potassium-40, and potassium-41 different from each other? Write the isotope symbol for each?
How are potassium-39, potassium-40, and potassium-41 different from each other? Write the isotope symbol for each?
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09/24/16

True or False: If in triangle ABC, (AB)^2 + (BC)^2 = (AC)^2, then triangle ABC is a right triangle
It is a true or false question
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08/02/16

A 10 µC charge is at the origin. A -5 µC charge is on the x-axis 10 cm to the right of the origin.
A 10 µC charge is at the origin. A -5 µC charge is on the x-axis 10 cm to the right of the origin. At what point other than at infinity can a 1 µC charge be placed so that there will be no net... more
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