Flashcard Set Preview
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| 1 |
For the following dimensional equation, find the base dimensions of the parameter k.
ML2 =...
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k = ML2 = LM-1t-1 LtM2
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| 2 |
For the following dimensional equation, find the base dimensions of the parameter h. It-1h...
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h = It-1 = IN-1t-1 N
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| 3 |
The power cord on an electric string trimmer carries a current of 5.2 A. How many milli- amperes...
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There are 103 mA and 106 uA in 1 A. Thus, 5.2 A = 5.2 × 103 mA = 5.2 × 106uA
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| 4 |
Write the voltage 0.00255 V using the appropriate SI unit prefix.
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0.00255V =2.55×103 V= 2.55mV
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| 5 |
In the following list, various quantities are written using SI units incorrectly. Write the...
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4.5 mW 8.75 MPa 200 J/s 20 W/m2 K 3A
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| 6 |
A rock (p = 2300 kg/m3) is suspended by a single rope. Assuming the rock to be spherical with...
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If the weight of the rope itself is neglected, the tension in the rope is equivalent to the...
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| 7 |
A micro switch is an electrical switch that requires only a small force to operate it. If a...
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0.25 oz × 1 lbf × 1 N ...
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| 8 |
Standard incandescent light bulbs produce more heat than light. Assuming that a typical house...
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0.9 × 20 × 60W × 3.4121Btu/h = ...
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| 9 |
A crane hoists a large pallet of materials from the ground to the top of a building. In hoisting...
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Power is defined as the rate of doing work. Thus, the units for power in the SI system are J/s,...
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| 10 |
A highway sign is supported by two posts as shown. The sign is constructed of a high- density... |
The weight of the sign is
W=mg= Vpg = (2.5 m)(1.3...
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| 11 |
The yield stress for structural steel is approximately 250 MPa. Convert this value to units of...
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250 MPa × 145.04 psi = 3.63 × 104 psi
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| 12 |
The dimension moment, sometimes referred to as torque, is defined as a force multiplied by...
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The quantities work, energy and heat are also expressed in SI units of Nm. One newton- meter...
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| 13 |
A spherical tank with a radius of 0.25 m is filled with water (p = 1000 kg/m3). Calculate the...
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The mass of the water is
m = pV = p (4/3)pi•R3 = (1000 kg/m3)(4/3)pi(0.25 m)3
= 65.5...
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| 14 |
A copper plate measuring 1.2 m × 0.8 m × 3 mm has a density of p = 8940 kg/m3. Find the mass...
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The mass of the plate is
m= pV= p(LWH) = (8940 kg/m3)(1.2 m)(0.8 m)(0.003 m) = 25.75 kg
The...
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Use these to study for your test. I have an idea--------------------->
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Print them out as cards and know the formulas!
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