steve4physics
steve4physics
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The trains are approaching each other at 22+22=44km/h (i.e. the velocity of one train relative to the other is 44km/h). The trains are initially 44km apart, so they will meet (collide) after 1 hour. The total distance the bird can fly in 1 hou…
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The trains are approaching each other at 22+22=44km/h (i.e. the velocity of one train relative to the other is 44km/h). The trains are initially 44km apart, so they will meet (collide) after 1 hour. The total distance the bird can fly in 1 hou…
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The effective voltage = 120.0 - 114 = 6V R = V/I = 6/8.40 = 0.714Ω
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1. Resonance 2. Maximum 3. Loud 4. Fundamental The answers to 1-3 are my best interpretation, as the questions are badly worded.
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To convert dB to a factor, divide by 10, raise 10 to this power. 14.5/10 = 1.45 10^1.45 = 28.18 The power has increased by a factror 28.18 8.00×10-3 W x 28.18 = 0.225W
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To convert dB to a factor, divide by 10, raise 10 to this power. 14.5/10 = 1.45 10^1.45 = 28.18 The power has increased by a factror 28.18 8.00×10-3 W x 28.18 = 0.225W
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Period of a pendulum is T = 2π√(L/g) Find T using L=10m and g = 9.8m/s² From the release point till the cable is vertical is 1/4 of a cycle. So the time taken is T/4. Round to 2 sig. figs.
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Period of a pendulum is T = 2π√(L/g) Find T using L=10m and g = 9.8m/s² From the release point till the cable is vertical is 1/4 of a cycle. So the time taken is T/4. Round to 2 sig. figs.
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Except for specific values (e.g.tanθ = I) it is incredibly time-consuming to do without a calculator or computer or tables. There are various methods which give the value in radians. Then you would convert radians to degrees and minutes. One meth…
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Except for specific values (e.g.tanθ = I) it is incredibly time-consuming to do without a calculator or computer or tables. There are various methods which give the value in radians. Then you would convert radians to degrees and minutes. One meth…
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Period of a pendulum is T = 2π√(L/g) Find T using L=10m and g = 9.8m/s² From the release point till the cable is vertical is 1/4 of a cycle. So the time taken is T/4. Round to 2 sig. figs.
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To convert dB to a factor, divide by 10, raise 10 to this power. 14.5/10 = 1.45 10^1.45 = 28.18 The power has increased by a factror 28.18 8.00×10-3 W x 28.18 = 0.225W
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1. Resonance 2. Maximum 3. Loud 4. Fundamental The answers to 1-3 are my best interpretation, as the questions are badly worded.