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Find the magnitude of the force required to keep a 280 lb barrel from sliding down a ramp inclined at 12.5 degrees from the horizontal.
Each making an angle of 55degrees with the ground. The total tower was 85ft. tall and the wires were each attached 7 ft. below the top of the tower. How long was each wire?
A plane takes off at an angle of 6 degrees traveling at the rate of 205 feet per second. If it continues on this flight path at the same speed, how many minutes will it take to reach an altitude
A video store the components of w = 3i + 2j represent the prices to rent the one day and three day videos respectively find v*w and describe what the answer means in practical terms.
How much force must be added to the horizontal force to move the cart 35ft so that the resulting work is 2500ft-lb.
A boat can go 11 knots in still water has heading N25W. The water is moving 6 knots S45W in the steady wind of 22 knots N12W. Find the speed of the boat relative to groundspeed.
You notice the plane is at an angle of elevation 18 degrees. One minute later, it is observed at an angle of elevation of 63 degrees. Determine the altitude of the plane(in miles).
At any t>_0 the position of the stone above the water level (in Feet) is given by f(t)=-16t^2+144, where t is the number of seconds elapsed. After how many seconds will the stone hit the water?
If the side parallel to the barn is to be twice the length of an adjacent side, and the area of the region is to be 162 ft2, how many feet of fencing should be purchased?
A ladder 22 feet long leans against the side of a house. Suppose the angle of elevation is 70 degrees. Find the horizontal distance from the foot of the ladder to the wall.
A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle of elevation of the ladder is 80 degrees.
Determine the number of revolutions through which a typical automobile tire turns in 1 yr. Suppose the automobile travels11000miles each year on tires with radius0.255m.
It is rosted at 60Hz in a uniform file of .45 T. Calculate the magnitude of the emf induced in the loop as a function of time.
A wheel has a radius of 4.35 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 26.7?
The scaffold weighs 190 N and is 3.2 m long. What is the tension in each rope when the 702-N worker stands 2.20 m from one end?
At what location(s) between the object and the screen should a lens of focal length 12.8 be placed in order to produce a crisp image on the screen?
A 2.54-cm-diameter faucet in the house can fill a cylindrical container with a diameter of 50 cm and a height of 32 cm in 12 s. How high above the faucet is the top of the water in the tower?
The measurements are made on one of the four fundamental properties, or combinations of the four fundamental properties. List the four fundamental properties.
Can 1,2,3-tribromocyclohexane or 3-bromocyclohexene be formed as a side product if these experimental conditions are used? Explain please why?
A 420g mixture of butane and butene is combusted in air to make carbon dioxide and water. If 555 grams of water are formed, how much butane was in the mixture?
A solution is prepared by mixing 5.4 g of FeCl3 with enough water to make 75 mL of solution. Calculate the molarity of the solution.
Calculate the pH of a solution prepared by dissolving 0.750 mol of NH3 and 0.250 mol NH4Cl in water sufficient to yield 1.00 L of solution. The Kb of ammonia is 1.77 x10-5 .
They need to make 500 mL of a 2.5 M solution of HCL. Calculate and specifically explain exactly how to make this solution.
Fe+3 can be identified in solution by breaking apart the ion (III) hydroxide, putting Fe+3 back into solution, and then complexing it to form a blood-red solution. Write a net ionic equation for t
Write down the structure of molecule A, write a balanced equation for these two reactions and give the name of B?