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drek231 [11]
3 years ago
11

5. During the annual shuffleboard competition, Renee gives her puck an initial speed of 9.32 m/s. Once leaving her stick, the pu

ck slows down at a rate of -4.06 m/s/s. Determine the time it takes the puck to slow to a stop.
Physics
1 answer:
abruzzese [7]3 years ago
3 0
V=0 v²=0, A=v-u/t. T=v-u/a. T= 0-9.32/-4.06 therefore time = 2.296 seconds
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Atoms can be joined together by chemical bonds.

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3 years ago
Your friend says that the law of momentum conservation is violated when a ball rolls down a hill and gains momentum. What do you
pochemuha

Answer:

The friend is wrong: the law of conservation of momentum is not violated

Explanation:

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8 0
3 years ago
An airplane is flying at 300 mi/h at 4000 m standard altitude. As is typical, the air velocity relative to the upper surface of
posledela

Answer:

57330.17766 Pa

Explanation:

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\rho = Density at 4000 m = 0.8194 kg/m³

(Values taken from table of properties of air)

V_1 = Velocity of jet = 300\times \frac{1609.34}{3600}=134.11\ m/s

V_2 = Velocity at max thickness

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P_1+\frac{1}{2}\rho V_1^2=P_2+\frac{1}{2}\rho V_2^2\\\Rightarrow P_2=P_1+\frac{1}{2}\rho V_1^2-\frac{1}{2}\rho V_2^2\\\Rightarrow P_2=61660+\frac{1}{2}\times 0.8194\times 134.11^2-\frac{1}{2}\times 0.8194\times 168.9786^2\\\Rightarrow P_2=57330.17766\ Pa

The absolute pressure at this point on the wing is 57330.17766 Pa

3 0
4 years ago
A person is lifting a bag of groceries with a uniform force of 75.0 N upward for 2.50 s. They raised the bag 1.50 m to place on
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Answer:

45 W

Explanation:

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W=Fd

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Substituting numbers into the formula,

W=(75.0 N)(1.5 m)=112.5 J

Now we can find the power used, which is given by

P=\frac{W}{t}

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P=\frac{112.5 J}{2.5 s}=45 W

7 0
3 years ago
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