Friday
December 2, 2016

# Posts by Jem

Total # Posts: 24

PHYSICS
an airplane flying due north with a speed relative to the ground of 300 km/hr. it then encounters a cross-wind that is directed due east. of the resultant speed of the airplane is now 302 km/hr, how fast is the cross wind?
July 9, 2016

math
the product of two whole numbers is 48. find their greatest possible sum. what is the least sum.?
July 30, 2015

maths
i have to design a wine glass using quadratic and linear and i don't know what to do!!!!!
March 29, 2015

algebra
What quantity of pure acid must be added to 600 mL of a 45% acid solution to produce a 50% acid solution?
February 10, 2015

Psychology
integrate statistics with "real-life" issues, such as day care, in order to interpret them.
April 23, 2013

algebra
9w + 3 = 6(w - 2)
January 16, 2013

Physics
A 500 g metal ball is whirled in a vertical circle. What is the centripetal force which draws it toward the center of the circle as it passes through the highest point?
December 30, 2012

Physics
A meter stick is supported at its center. If a load of 150 dynes is placed at the 20 cm mark, where should a 100 dynes load be placed in order that the stick remains in the horizontal position?
December 30, 2012

Physics
Which of the following is NOT the correct dimension for electric field? A. N/C B. V/m C. J/Cm D. All of the answers have the correct dimensions for electric field
August 29, 2012

physics
a bullet penetrates 7 cm into a block of wood when fired at a speed of 33 m/s. Find the deceleration and the time taken to stop
July 5, 2012

Change boring verb and ordinary adjectives
Bill BECAME AGGRAVATED by his little sister
May 23, 2012

physics
Apparently the answer is 5.3 at 26 degrees but I don't understand why?
May 6, 2012

Physics
An arrow is shot at ground level with an initial speed of 50.0 m/s at an angle of 25.0° above horizontal. What is its x-coordinate when the arrow is on the way up and its y coordinate is 5.00 m above the ground?
February 13, 2012

Physics
A 2.97 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 12.9 N. The coeﬃcient of kinetic friction is 0.126. The acceleration of gravity is 9.8 m/s^2. Find the speed of the block after it has moved 2.92 m. ...
December 1, 2011

Physics
then how would you find vertical velocity component?
October 18, 2011

Physics
An artillery shell is ﬁred at an angle of 32.2◦ above the horizontal ground with an initial speed of 1610 m/s. The acceleration of gravity is 9.8 m/s 2. Find the total time of ﬂight of the shell, neglecting air resistance. Answer in units of min Find its ...
October 18, 2011

Physics
A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball ...
October 18, 2011

Chemistry
Thanks so much
October 10, 2011

Physics help!!
A truck travels beneath an airplane that is moving 120 km/h at an angle of 24◦ to the ground. How fast must the truck travel to stay beneath the airplane? Answer in units of km/h What is the magnitude of the vertical component of the velocity of the plane? Answer in ...
October 10, 2011

Physics help!!
A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 35.4 m/s. At the same time, it has a horizontal velocity of 57.2 m/s. At what speed does the vehicle move along its descent path? At what angle with the vertical is its path?
October 10, 2011

Chemistry
Ln( K/ 4.90*10^-4) = 1.56189 Solve for K
February 8, 2011

calculus
what is the derivative of (sin^2)x ?
October 21, 2009

Science
1.Is molar mass always done for one mol of substance? Let me make up an example: 2H2(g)+O2(g)--> 2H2O When finding molar mas of water would it be 2(2(1.01)+2(16)) or just 2(1.01)+16? 2. I'm not really sure about endergonic exergonic reaction because my teacher is ...
July 27, 2009

Math
2x+3>0 so x>=-3/2 if it was less than -3/2 the inside of the squareroot would be negative and that number does not exist in real number system. For range If I remember it is normally y>0 for this function but since it is shifted up 3 it would now be y>=3
July 27, 2009

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