Material Density (g/cm³) Aluminum 2.7 Concrete 2.3 Copper 8.6 Gold 19.3 Ice 0.92 Iron 7.9 Lead 11.3 Mercury 13.6 Nickel 8.9 Saltwater 1.03 Silver 10.5 Water 1 Zinc 7.14 Part 1: Echo You are standing on a canyon edge and you give a shout. After 2.5 s have passed, you hear your echo. The temperature at the canyon is -8.2 °C. A.) Determine the speed of sound. B.) Determine how far away the cliff wall is that your voice bounced off of. Part 2: Long cable A transverse wave pulse travels along a 30 m long silver cable and returns 1.01 s later. The cable has a radius of 0.7 cm. A.) Determine the wave speed. B.) Determine the cable tension.

Direction: Write the correct answer on the blanks. Inside the box are the possible answers. pwater = 1.0 g/cm3 pethanol=0.76 g/cm3 pmercury=13.6 g/cm3 pair = 1.20 kg/m3 PHe=0.18 kg/m3 Volume of a block: V=lwh Density: p=m/V Volume of a sphere: V-(4/3)Trr Weight: Fg-mg Net force: EF = ma %3D 1. If a block of aluminum measures 4.0 cm x 5.0 cm x 2.0 cm is completely submerged in a tank of water, what volume of water does it displace? 2. What is the mass of the displaced water? 3. What is the weight of the displaced water? 4. How large of a buoyant force acts on the block? 5. The mass of the aluminum block is 108 g. Determine its density.

After an ill-advised field trip to Lake Michigan has gone horribly wrong, 200kg worth of students are clinging to an inflateable raft. How many cubic meters of enclosed air will they need in order to stay afloat out in the water? a. 0.05 m^3 b. 0.2 m^3 c. 1.25 m^3 d. 5.0 m^3

10:55 > t.myexams.unisa.ac.za MENU E Frag question A. 5.0 x 108 ft³ B. 6.0 x 108 ft³ C. 8.6 x 108 ft³ D. 2.1 x 108 ft³ E. 4.8 x 108 ft³ ||| Vol) 4G LTE2 T The largest building in the world by volume is the Boeing 747 plant in Everett, Washington. It measures approximately 650 m long, 710 yards wide, and 110 ft high. What is its volume in cubic feet? O 47 71% < myExams

1 v4 2m/s 2.4m 2 Q-0.0145ma/s 1.06 24m2/w/mwidth 3.3 60 cm Water flows in a channel that has a slope of 30°. If the velocity is assumed to be constant, 12 m/s, and if a depth of 60 cm is measured along a vertical line, what is the discharge per meter of width of the channel?

How do I caclucate for % diff B. Determination of μ₁ ( k accelerated motion) Table 3: Wood on Aluminum B. Determination of (accelerated motion) Table 3: Wood on Aluminum 130.15 g мь = mw 130.0 g = mb m₂ + mw = mh 0.14 0.13 Table 4: Felt on Aluminum m₂ = 130.15 g mw 130.0 g mb m₂ +mw a mh 0.10 0.10 fk 0.0467 % diff 0.458 0.440 0.0448 a μk 0.403 0.411 0.424 0.043 % diff

What is the specific weight of methane gas at 2 kgf/cm2 gauge and 32 F?   Choices: a) 2.1 kg/m^3 b) 0.02 N/m^3 c) 2.1 N/m^3 d) 20.57 N/m^3   Please provide a detailed solution thank you!

2. 1.5kN H Vo 1.MN 750N pmb Yp = - Gy Coy

A tank contains H₂O. What is the intensity of pressure at a depth of 6 meters?

4.Athlete MeseretDefar runs at 10m/s. How long will it takes her to go 80m? A. 8sec B. 6sec C. 5sec D. 7sec 5.Which prefix has the smallest value? A. Pico B. Micro C. Nano D. Tera 6.The dimension [ML – 3]represents: A. Velocity B. Density C. Acceleration D. Pressure A bus is moving in a straight line at speed of 20m/s. What time does iT take to cover 4km? A. 200sec B. 300sec C. 400sec D. 500sec _8.One of the following physical quantities is both vector and derived. A. Work B. Power C. Force D. Pressure 9.Which one of the following is the correct system of writing of the number 20810000m in scientific notation? A. 2081*10 m B. 20.81*10°m C. 2.81*10’m D. 2.081*10'm