10/06/15

A rocket is fired up and ascends w/ a constant vertical acceleration 4.0m/s^2 for 6.0s.FindTotalTimeThatRocketSpendsInAir
Physics question 
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10/06/15

What is the theoretical yield of iron(II) oxide in grams? What is the percent yield for this reaction ?
For the following reaction, 4.80 grams of oxygen gas are mixed with excess iron . The reaction yields 18.4 grams of iron(II) oxide .iron ( s ) + oxygen ( g ) iron(II) oxide ( s )
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10/06/15

I need partial help
Mr. Bean wants to borrow $9200 for three years. The interest rate is 7.0% compounded monthly. I have figured out the monthly payments (857.19)   What will be the balance owed on the loan at the... more
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10/05/15

As a ball falls, its acceleration is what?
As a ball falls, its acceleration is...   Multiple Choice: A) positive B) negative C) it has no acceleration   I know the answer is A) positive. But why? Please explain.
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10/05/15

Which of the following carts is experiencing an unbalanced force?
Which of the following carts is experiencing an unbalanced force?   Multiple Choice: A) A cart that is accelerating B) A cart that is traveling at a constant speed C) A cart that is at... more
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10/04/15

did the car hit the skunk? what was the cars displacement?
A man is traveling at +96.5km/h when he sees a skunk laying on the road. It takes him 1.25 seconds after seeing the skunk to move his foot from the gas pedal to the brake pedal (during that time he... more
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10/04/15

A car enters the freeway with a speed of 7.1 m/s
A car enters the freeway with a speed of 7.1 m/s and accelerates uniformly for 3.3 km in 4.3 min. How fast is the car moving after this time? Answer in units of m/s.
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07/20/15

Area of a parallelogram using 4 points
  I need some help using vectors to find the area of this parallelogram. I use three points to create two vectors with the same initial points and use a 2x2 determinant to compute the cross... more
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06/19/15

Physics: Torque multiple choice question
In comparing two unequal forces on a rigid body, is it possible to have the larger force produce less torque than the smaller force?     a. Yes b. No
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06/11/15

a spring of force constant 200N/m is compressed through a distance of 0.05m calculate the energy stored in the string
 I.calculate the energy stored in the string II.if the energy in (I.) above is imparted to a body of mass 0.5kg to set it in motion calculate the speed acquired by the body
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07/02/14

acceleration c/o physical science
2.  if you are using a hammer to  hit a stake into the ground why will the acceleration of the hammer be less than the acceleration of the stake?   a.  force of the hammer is greater than the... more
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12/13/12

Explanation/(answer)
In a room shaped like an ellipse, something whispered at 1 focus can be clearly heard at the other focus. The US Capitol National Statuary Hall in Washington, DC is such a whispering gallery. If... more
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