Saturday
December 20, 2014

Posts by Help?


Total # Posts: 25

percentage
yay thxx i tell the teacher tomorrow
October 24, 2014

percentage
how to Convert 1/3 to mixed number? my teacher assinged and im confused
October 24, 2014

maths
mathmate,she is right,she is trying to say that the answer , if we round up we get 1 hour. cuz may be her mathbook's back answer is 1 hour or 60 minutes
May 31, 2013

physics
The wavelength of the electromagnetic waves is 200 nm. Which of following regions does it belong to? visible light region ultra violet light infrared region x-ray region
February 11, 2013

trig
(3 tan^2x-1)(tan^2-3)= 0 can someone please explain how to do this problem and then explain the whole pie thing at the end...like, this is suppose to equal pie/6 b/c it's tan...im soooo confused.....
October 28, 2011

math
Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures. 885.75 g + 10.151 g - 25.50 g Calculate the value of the following in ...
September 23, 2010

Science
C12 H22 O11 = Co2 + H2O how to balance this equation?
July 11, 2010

algebra
E=jc^2 divide everything by j, so E/J = c^2 take the square root of everything to make C^2 to c so √ E/J = C p.s. √ = square root of
July 11, 2010

English
i need to find a link to: A "Girl's" Story by David Arnason
June 9, 2009

physics
At 08:00hrs a 2.0- m-long vertical stick in air casts a shadow 1.8 m long. If the same stick is placed at 08:00hrs in air in a flat bottomed pool of salt water half the height of the stick, how long is the shadow on the floor of the pool? (For this pool, n = 1.56.)
May 25, 2008

physics
A laser beam enters a .125 m thick glass window at an angle of 39° (from the normal). The index of refraction of the glass is 1.46. At what angle from the normal does the beam travel through the glass? that answer is 25.53 deg the second part asks How long does it take the...
May 25, 2008

physics
By what length is a light ray displaced after passing through a 4.7 cm thick sheet of material (n=1.38) with an incident angle of theta = 33.5°.
May 25, 2008

physics
An object whose height is 3.5 cm is at a distance of 8.5 cm from a spherical concave mirror. Its image is real and has a height of 11.2 cm. Calculate the radius of curvature of the mirror. How far from the mirror is it necessary to place the above object in order to have a ...
May 25, 2008

physics
A dime .334 m away from, and on the optical axis of, a concave spherical mirror produces an image on the same side of the mirror as the source. The image is .093 m away from the mirror. If the dime is moved on the axis to .229 m from the mirror, how far away from the mirror is...
May 25, 2008

physics one more
A dime .334 m away from, and on the optical axis of, a concave spherical mirror produces an image on the same side of the mirror as the source. The image is .093 m away from the mirror. If the dime is moved on the axis to .229 m from the mirror, how far away from the mirror is...
May 24, 2008

physics
no it's cool i finally think i got it. False True True True False True False
May 24, 2008

physics
they're true false that's all the info given
May 24, 2008

physics
TRUE OR FALSE The virtual image formed by a convex mirror is always enlarged. A convex mirror never forms a real image of a real object. When the object of a concave mirror is inside the focal point, the image is virtual. The image produced by a convex mirror is always closer ...
May 24, 2008

physics
An object whose height is 3.5 cm is at a distance of 8.5 cm from a spherical concave mirror. Its image is real and has a height of 11.2 cm. Calculate the radius of curvature of the mirror. How far from the mirror is it necessary to place the above object in order to have a ...
May 24, 2008

physics
By what length is a light ray displaced after passing through a 4.7 cm thick sheet of material (n=1.38) with an incident angle of theta = 33.5°.
May 24, 2008

physics
A laser beam enters a .125 m thick glass window at an angle of 39° (from the normal). The index of refraction of the glass is 1.46. At what angle from the normal does the beam travel through the glass? that answer is 25.53 deg the second part asks How long does it take the...
May 24, 2008

physics
At 08:00hrs a 2.0- m-long vertical stick in air casts a shadow 1.8 m long. If the same stick is placed at 08:00hrs in air in a flat bottomed pool of salt water half the height of the stick, how long is the shadow on the floor of the pool? (For this pool, n = 1.56.)
May 24, 2008

physics
A 85.0 kg person steps into a car of mass 2500.0 kg, causing it to sink 2.5 cm. Assuming no damping, with what frequency will the car and passenger vibrate on the springs?
April 28, 2008

Physics
Two blocks, with masses M1 = 1.4 kg and M2 = 9.9 kg, and a spring with spring constant k = 228 N/m are arranged on a horizontal, frictionless surface. The coefficient of static friction between the two blocks is 0.59. What is the maximum possible amplitude of the simple ...
April 27, 2008

Reading
Could you explain what personal reflection on the story mean? Thank You! This question asks you how you related to and felt about the story. You might consider the following questions: How would you have reacted to the situations mentioned in the story? The same or differently...
April 30, 2007

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