In the early twentieth century, what two experiments involving light and matter could not be explained by the wave theory of light?

In the early twentieth century, what two experiments involving light and matter could not be explained by the wave theory of light?

A 100 g wire is held under a tension of 250 N with one end at x = 0 and the other at x = 10.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 10.0 m. At time t = 30.0 ms, pulse 2 is sent along the wire from the end at x = 0. At what position x do the pulses begin to meet?

Find the volume of the solid bounded above by the surface z = f(x, y) and below by the plane region R. f(x,y) = 4-2x-y;

$$R= \{(x,y) | 0 \le x \le 1; 0 \le y \le 2\}$$

What are emission spectra? How do line spectra differ from continuous spectra?

a. List five examples of electromagnetic radiation. b. What is the speed of all forms of electromagnetic radiation in a vacuum?

Solve each equation or inequality.

$$14 - 5 x \geq - 6$$

Which of the following will shift the aggregate demand curve to the right? A. a decrease in wealth B. pessimistic consumer expectations C. a decrease in the existing stock of capital D. contractionary fiscal policy E. a decrease in the quantity of money

List the colors of light in the visible spectrum in order of increasing frequency.

What are the frequency and wavelength ranges of visible light?

Write a function rule to represent each situation. The volume V remaining in a

$$243-ft^3$$

pile of gravel decreases by

$$0.2\ ft^3$$

with each shovelful s of gravel spread in a walkway.

A gentleman runs a household of $100$ people and orders that they be given $100$ measures of grain. He directs that each man should receive three measures, each woman two measures, and each child half a measure. How many men, women, and children are there in this household? We are told that there is at least one man, one woman, and one child. (From the $\textit{Problems for Quickening a Young Mind}$ by Alcuin $[c. 732–804]$, the Abbot of St. Martins at Tours. Alcuin was a friend and tutor to Charlemagne and his family at Aachen.)

Determine whether each function represents an inverse variation. Explain. x+y=12

The complete combustion of octane,

$$C_8H_{18},$$

a component of gasoline, proceeds as follows:

$$2 \mathrm { C } _ { 8 } \mathrm { H } _ { 18 } ( l ) + 25 \mathrm { O } _ { 2 } ( g ) \longrightarrow 16 \mathrm { CO } _ { 2 } ( g ) + 18 \mathrm { H } _ { 2 } \mathrm { O } ( g )$$

How many grams of

$$O_2$$

are needed to burn 10.0 gof

$$C_8H_{18}?$$