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With winter coming on, this rate of hair growth is steadily increasing, by 0.132 mm/day every week. By how much will the dog's hair grow during 5 weeks?
At this moment, how fast is the area of the triangle formed by ladder, wall and ground changing?
The owner estimates that there will be 20 more racers per week for every $1.00 reduction in the price per ticket. How can the go-cart owner maximize weekly revenue?
Usha and Ritu are two sisters. Usha wants to explain some technologies to Ritu. Name some technologies and related principles.
What do you think did Einstein mean when he said: ''The most incomprehensible thing about the world is that it is comprehensible''?
If you look at yourself in shiny Christmas tree ball with a diameter of 9.0 cm when you face is 30.0cm away from it, where is your image? Is it real or virtual? Is it upright or inverted?
A long solenoid (diameter of 6.59 cm) is wound with 1417 turns per meter of thin wire through which a current of 0.289 A is maintained. A wire carrying a current of 28.7 A is inserted along the axis
The cost C(in dollars)for the care and maintenance of a horse and carriage is C=15x+2000, where x is the number of rides. Write an equation for the revenue R in terms of the number of rides.
A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. What is the wavelength of the electromagnetic wave?
The mass of the part of a metal rod that lies between its left end and a point meters to the right is 3x2 kg. Find the linear density when is?
If it takes three hours for the snowball to decrease to half its original volume, how much longer will it take for the snowball to melt completely?
A boat is pulled into a dock by a rope attached to the bow of the boat. If the rope is pulled in at a rate of 1 m/s, how fast is the boat approaching the dock when it is 8 m from the dock?
Find an expression for the height of the snow at time t. Then use the given information that the rate of removal R (in m3/h) is constant.]
This curve is called a catenary (from Latin catena = the chain). Find the graph y(x), assuming k = 1 and those fixed points are (- 1, 0) and (1, 0) in a vertical xy-plane.
In the other two corners are placed charges of +3.0 uC and -3.0 uC. what is the magnitude of the electric field at the square's center?
A local Dunkin' Donuts shop reported that its sales have increased exactly 22% per year for the last 2 years. This year's sales were $82,500. What were Dunkin' Donuts sales 2 years ago?
A proton has a speed of 3.0 x 106 m/s in a direction perpendicular to a uniform magnetic field, and the proton moves in a circle of radius 0.20 m. What is the magnitude of the magnetic field?
Puthina Unge bought a new Compaq computer system on sale for $1,800. What was the original price of the computer? Round to the nearest dollar.
The frequency of a steam train whistle as it approaches you is 538Hz. After it passes you, its frequency is 486Hz. How fast was the train moving? (please show work for credit)
A horizontal power line of length 40 m carries a current of 2.7 kA as shown in the figure below. Earth's magnetic field at this location has a magnitude equal to 5.0 x 10-5 T and makes an angle of 6
A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.33 s. How much longer should the pendulum be made in order to increase its period by 0.29 s?
Child is playing by jumping on a bathroom scale. The mass of the child is 31 kg and when he stands on a bathroom scale, the spring inside the scale compresses 0.46 mm. (a) What is the spring constan
If in 2011, attendance for the Christmas Eve celebration is expected to increase by 35%. What is the total number of people expected at Walt Disney World for this event?
Staples sells boxes of pens ($10) and rubber bands ($4). Leona ordered a total of 24 cartons for $210. How many boxes of each did Leona order?
Dots sells T-shirts ($2) and shorts ($4). In April, total sales were $600. People bought 4 times as many T-shirts as shorts. How many T-shirts and shorts did Dots sell?