Posts by Des
Total # Posts: 32
An airplane is flying with a velocity of 240 m/s at an angle of 30.0o with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle ??
February 6, 2017
Jasmine and her brother Nat are savibg to buy a digital camera that costs $135. Jasmine earns $15 per week for babysitting and spends $5 of it. Nat earns $18 per week for walking dogs and spends$7 of it. Which expression can be used to find how many weeks it will take to save ...
April 12, 2016
The radius of the path of an object in uniform circular motion is halved. The centripetal acceleration needed if its speed remains the same is _____. -half as great, -the same as before, -twice as great as before, or -four times as great as before? could somebody explain the ...
September 8, 2015
A $10 bottle of detergent yields 10 loads of laundry. Allen tries this detergent & finds he can do only 8 loads of laundry from 1 bottle. What fraction of the advertised # of loads was he able to do?
May 6, 2015
There are ten yellow 6 green 9 orange and 5 red cards in a stack of cards turned faced down once a card is selected it is not replaced what is the probability they will get two yellow cards
March 26, 2014
Consider the market for trucks. Assume that the demand for trucks is given by 60 2 5 D Q P Y where P is price per truck and Y is the income of the buyers. The supply of trucks is given by 30 5 3 S Q P W where W is the price of all the materials needed to produce a truck. Solve...
February 23, 2013
An open box is to be made from a 11 inch by 11 inch piece of cardboad. this box is constructed by cutting squares that measure x inches on each side from the corners of the cardboard and turning up the sides. Use a graphical calculator to find the height of the box that yields...
December 13, 2012
In the middle of the page, draw an equilateral triangle with 2 inch sides and the bottom parallel to the bottom of the page. 2. From the center of the right side, draw two parallel lines an inch apart and an inch long. 3. Draw a line from the end of one of the parallel lines ...
December 10, 2012
A basketball player is standing on the floor 10.0 m from the basket as in the figure below. The height of the basket is H = 3.05 m, and he shoots the ball at an angle, θ = 37.6°, with the horizontal from a height of h = 2.20 m. (a) What is the acceleration of the ...
September 9, 2012
The average commute time via train from the Chicago O'Hare Airport to downtown is 60 minutes with a standard deviation of 15 minutes. Assume that the commute times are normally distributed. What proportion of commutes would be: longer than 80 minutes? less than 50 minutes...
October 14, 2011
a car has an acceleration of 4 m/s squared. What will the increase in it's velocity be after 2 seconds? If it started with a velocity of 30 m/s, what is its final velocity?
February 24, 2011