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8090 [49]
3 years ago
7

Which state of matter has a definite volume but does not have a definite shape

Physics
2 answers:
MAVERICK [17]3 years ago
7 0

The answer I got by doing some research was Liquid.

creativ13 [48]3 years ago
5 0

Your answer is liquids

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An aluminum bar 600mm long, with diameter 40mm, has a hole drilled in the center of the bar. The hole is 40mm in diameter and 10
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Answer:

<em>1.228 x </em>10^{-6}<em> mm </em>

<em></em>

Explanation:

diameter of aluminium bar D = 40 mm  

diameter of hole d = 30 mm

compressive Load F = 180 kN = 180 x 10^{3} N

modulus of elasticity E = 85 GN/m^2  = 85 x 10^{9} Pa

length of bar L = 600 mm

length of hole = 100 mm

true length of bar = 600 - 100 = 500 mm

area of the bar A = \frac{\pi D^{2} }{4} =  \frac{3.142* 40^{2} }{4} = 1256.8 mm^2

area of hole a = \frac{\pi(D^{2} - d^{2}) }{4} = \frac{3.142*(40^{2} - 30^{2})}{4} = 549.85 mm^2

Total contraction of the bar = \frac{F*L}{AE} + \frac{Fl}{aE}

total contraction = \frac{F}{E} * (\frac{L}{A} +\frac{l}{a})

==> \frac{180*10^{3}}{85*10^{9}} *( \frac{500}{1256.8} + \frac{100}{549.85}) = <em>1.228 x </em>10^{-6}<em> mm </em>

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3 years ago
What is the approximate amount of thrust you need to apply to the lander to keep it's velocity roughly constant
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The approximate amount of thrust(force) you need to apply to the lander to

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Newton's second law of motion states that the acceleration the force acting

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If the object is moving with uniform velocity, it simply means that the

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To raise an arm upward, the muscle on one side of it contracts. What happens to the muscle on the opposite side of the arm?
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It relaxes

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I took the test I hope it helps

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