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Momentum is mass times **Weegy:** Momentum = mass times velocity. **User:** Jamal blasts an air-horn to start a race. Lewis hears the horn from his house 274 meters away. Given that sound travels through air at 340 m/s, how long did it take the sound to travel from Jamal to Lewis?
440 s
0.81 s
1.2 s
66 s **Weegy:** The sound travelled from Jamal to Lewis in 0.81 seconds. **User:** The source of the centripetal force that arises when a runner rounds a curve on a track is _____.
tension
friction
weight
gravity **User:** A force of 8,480 N is applied to a cart to decelerate it at a rate of 32.0 m/s2. What is the mass of the cart?
865 kg
377 kg
265 kg
27.0 kg **Weegy:** mass of the cart m = F / a = 8480 / 32 = 265 kg
Answer is 265 kg
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Asked 11/15/2012 8:20:34 AM

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momentum is___times velocity. User: what do you multiply with velecity to get the momentum **Weegy:** Momentum is mass times velocity.
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Asked 11/15/2012 8:25:14 AM

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A rectangle is _____ a trapezoid. User: Which polygon has an interior measure of 900° **Weegy:** it's a heptagon has an interior measure of 900°. **User:** Which shape has four congruent sides and two sets of parallel sides **Weegy:** A Rhombus has four congruent sides and two sets of parallel sides. **User:** If each angle in a pentagon is the same measure, what is that measure **Weegy:** if it is a regular pentagon (all angles the same), then each angle is 540° / 5 = 108°. (More)

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Asked 11/15/2012 8:25:25 AM

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Which state of matter contains the most energetic particles?
gas
solid
liquid
plasma User: Archimedes discovered relationships between _____.
pressure and volume of gases
temperature and volume of gases
density and floating
pressure and surface area **Weegy:** The answer is "density & floating" **User:** What is the best name for CaBr2? **User:** Which of the following is most likely to be the best conductor of electricity?
iodine
neon
silicon
lead **Weegy:** lead **User:** 23°C = ______ K **Weegy:** 23?C = 296.15 K. [smile] **User:** n experiment is designed to determine if the amount of sugar in a drink affects the likelihood that bees will be attracted to it. Sample A is 100 mL of pure water. Sample B is 100 mL of water with 1 gram of sugar dissolved in it. Sample C is 100 mL of water with 2 grams of sugar dissolved in it.
All samples are placed on a picnic table. One observer is assigned to each drink. The observers count the number of bees that visit the drink during a 15-minute interval.
Which of the following is the best hypothesis for this experiment? **Weegy:** Can you provide us with the options? **User:** If the amount of sugar in a drink increases, then the number of bees it attracts will increase.
Bees prefer drinks with sugar in them.
If the temperature during the test increases, then the number of bees visiting the drinks will increase. **Weegy:** If the amount of sugar in a drink increases, then the number of bees it attracts will increase. (More)

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Asked 11/15/2012 10:16:26 AM

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Which of the following would not be considered a polymer?
quartz
plastic
nylon
rubber **Weegy:** quartz. quartz would not be considered a polymer **User:** The "scratch test" is used to determine the ______ of a material.
hardness
toughness
strength
density (More)

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Asked 11/15/2012 10:43:03 AM

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