Suppose small, spherical pieces of pasta are floating in a column of water at a temperature of 298 K, in an experiment similar to Perrin's. Using a microscope, you are able to count the number of pieces of pasta per litre. You position the microscope at a height of 6.0 cm above the bottom of the water column and you count 130 pieces of pasta. You next move to a position that is 15.0 cm above the bottom of the column, and you count 65 pieces of pasta. How many pieces of pasta would you find 20.0 cm above the bottom of the column?

Suppose small, spherical pieces of pasta are floating in a column of water at a temperature of 298 K, in an experiment similar to Perrin's. Using a microscope, you are able to count the number of pieces of pasta per litre. You position the microscope at a height of 6.0 cm above the bottom of the water column and you count 130 pieces of pasta. You next move to a position that is 15.0 cm above the bottom of the column, and you count 65 pieces of pasta. How many pieces of pasta would you find 20.0 cm above the bottom of the column?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A window has dimensions of 1.7 m by 2.75 m and is made of glass 5.5 mm thick. On a winter day, the outside temperature is 25° C while the inside temperature is a comfortable at 16° C. (k of glass =0.185W/m.K) Calculate the following (a): the area of the window in square metres : the temperature gradient (ΔT/Δx)in kelvin/metre : the rate of heat lost through the window by conduction in watts/metre.kelvin :
A window has dimensions of 1.55 m by 2.65 m and is made of glass 5.5 mm thick. On a winter day, the outside temperature is 25.5° C while the inside temperature is a comfortable at 17.5° C. (k of glass =0.095W/m.K) Calculate the following: a) the area of the window in square metres b) the temperature gradient (AT/Ax)in kelvin/metre c) the rate of heat lost through the window by conduction in watts
You happen to come across a piece of metal that has a density of p = 7.43 g/cm³ when the temperature is To = 45.0 °C. If the metal is cooled to a temperature of T = 0.00 °C, does the density change? No, because as the volume changes so does the mass. No, density does not depend on temperature. Yes, since the metal contracts and the mass is constant, the density will increase. Yes, the density will decrease since the volume changes. Calculate the density of the piece of metal at this temperature, p1. The coefficient of volume expansion for this piece of metal is ß = 8.43 x 10-s 1°°C.
A 1100 cm X 1440 cm house is built on a 12.8 cm thick concrete slab of thermal conductivity 0.66 W/m.K.. If the ground temperature of the slab is 6.1°C while the interior of the house is 25.5°C. ((a*1)+ (b*1.5)+(c*2.5) = Calculate the following: a) The temperature difference in kelvin b) The temperature gradient (AT/Ax) in kelvin/metre c) The heat loss rate through the concrete slab in kilowatt
You happen to come across a piece of metal that has a density of p 8.12 g/cm3 when the temperature is To = 42.5 °C. If the metal is cooled to a temperature of T1 0.00 °C, does the density change? Yes, the density will decrease since the volume changes. Yes, since the metal contracts and the mass is constant, the density will increase. No, because as the volume changes so does the mass. No, density does not depend on temperature. Calculate the density of the piece of metal at this temperature, P1. The coefficient of volume expansion for this piece of metal is B = 7.62 x 10-5 1/°C. -0.0263 Pi = g/cm3 Incorrect
The temperature at a point (x, y) on a flat metal plate is given by T(x, y) = 96/(2 + x² + y2), where T is measured in °C and x, y in meters. Find the rate of change of temperature with respect to distance at the point (1, 3) in the x-direction and the y-direction. (a) the x-direction 1 °C/m (b) the y-direction Need Help? Read It °C/m Show My Work (optional) W S 3 E D $ 4 R LL % O G F7 A H FA * ( 9 ) O 4x D 7:16 PM 10/3/2022 Backspace
On the surface of a hypothetical planet X, the atmospheric pressure is 4.25 x 106 Pa, and the temperature is 707 K. On the earth's surface the atmospheric pressure is 1.00 x 105 Pa, while the surface temperature can reach 320 K. These data imply that the planet X has a "thicker" atmosphere at its surface than does the earth, which means that the number of molecules per unit volume (N/V) is greater on the surface of planet X than on the earth. Find the ratio (N/V)X/(N/V)Earth.
A picture window has dimensions of 1.55 m by 2.3 m and is made of glass 5 mm thick. On a winter day, the outside temperature is 24° C while the inside temperature is a comfortable at 18.5° C. (k of glass =0.065W/m.K) Calculate the following: a) the area of the window in square metres b) the temperature gradient (AT/Ax)in kelvin/metre c) the rate of heat lost through the window by conduction in watts/metre.kelvin
Two narrow bores of diameters of 3 mm and 6 mm are joined together to form a U-shaped tube open at both ends. If the U-tube contains water, what is the difference in levels in two limbs of the tube ? Surface tension of water at the temperature of experiment is 7.3 x 10-? N/m. Take the angle of contact to be zero and density of water to be 1 x 10° kg³.
A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, which is copper and rests on a heating element. In two minutes, the mass of water boiled away is m = 2.5 kg. The radius of the pot bottom is R = 8.0 cm and the thickness is L = 1.0 mm. What is the temperature of the heating element in contact with the pot? TE = Number i Units
Please write the step-by-step solution following the formula: dHI/dt = dHI/dT x dT/dt +dHI/dhr x dhr/dt
A Goodyear blimp typically contains 5300 m of helium (He) at an absolute pressure of 1.10 x 10 Pa. The temperature of the helium is 275 K. What is the mass (in kg) of the helium in the blimp? Number Units the tolerance is +/-2%