In physics, What is meant by a proportional relationship? Is this the same as a linear relationship? Explain.

A cord has two sections with linear densities of 0.10 kg/m and 0.20 kg/m, the figure(Figure 1). An incident wave, given by D = (0.050 m) sin(7.5z - 12.0t), where I is in meters and + in seconds, travels along the lighter cord. What is the wavelength on the lighter section of the cord? Express your answer using two significant figures. ΟΙ ΑΣΦ Submit Request Answer Part B What is the tension in the cord? Express your answer using two significant figures. FT= ΜΕ ΑΣΦ Submit Request Answer Part C ? ? m N What is the wavelength when the wave travels on the heavier section? Express your answer using two significant figures.

I need help with this question. I also don't know what the units should be for the answer. Is it m/s^2 or is it kg m/s^2

A cube of material has sides 1 unit, and variable density which is given by p(x, Y, z) = 3 + 4xy – z, where all of x, y, z are between 0 and 1. Evaluate the mass of the cube; give your answer as a decimal to 1 d.p. Answer:

The drag force F on a boat is jointly proportional to the wetted surface area A on the hull and the square of the speed s of the boat. A boat experiences a drag force of 220 lb when traveling at 5 mi/h with a wetted surface area of 40 ft2. How fast must a boat be traveling if it has 28 ft2 of wetted surface area and is experiencing a drag force of 150 lb? (Round your answer to two decimal places.)  mi/h

The Statue of Liberty in New York City is approximately 305 ft305 ft tall. How many U.S. dimes would be in a stack of the same height? Each dime is 1.35 mm1.35 mm thick. number of dimes:     Each dime has a mass of 2.268 g.2.268 g. How much would the stack of dimes from the previous question weigh? mass:   g What is the value, in dollars, of the same stack of dimes? value:   dollars The 2017 U.S. gross domestic product (GDP) was valued at 19,390,604,000 dollars.19,390,604,000 dollars. How many Statue of Liberty‑height stacks of dimes are needed to match the GDP in value? number of stacks:

Answer correlty in terms of kg     ..........>>>

Calculate the mass (in SI units) of a 1.9 lblb cockatoo. Express your answer with the appropriate units.

The density of aluminum is 2.7g/cm3. An aluminum plate of uniform thickness is 10 cm length, 20cm wide and weigh 0.270kg. How thickness is the aluminum plate? Express you answer in exponential notation with the proper number of significant digits.

Suppose you need 8.5 m of Grade 70 tow chain, which has a diameter of 3/8" and weighs 2.16 kg/m, to tow a car. How would you calculate the mass of this much chain? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. mass of chain = x10 μ 5