From Questions to Solutions

When two lamps rated at 220 V, 50 W and 220 V, 100 W are connected: (i) In series (ii) In parallel In both cases, which lamp will glow brighter

Linda had an orange ribbon and a blue ribbon. The orange ribbon was 2 meters long. The blue ribbon was \(\frac{4}{5}\) as long as the orange ribbon. Linda cut off

Mrs. Grey is buying blue ribbon, silver ribbon, and yellow ribbon. Blue ribbon comes in 15-meter rolls, silver ribbon comes in 12-meter rolls, and yellow ribbon comes in 20-meter rolls.

Which expression gives the closest estimate of 228 – 179? A. 230 – 180 B. 220 – 180 C. 230 – 170 D. 220 – 170

A yard is equal in length to three feet. The function [tex]f(x)[/tex] takes a measurement in yards (as input) and returns a measurement in feet (as output). [tex]f(x) = 3x[/tex]

What is the enthalpy of vaporization of a compound that has a vapor pressure of 157 mmHg at 253 K and 0.358 mmHg at 191 K? (Use \( R =

A distribution of values is normal with a mean of 87.6 and a standard deviation of 39.3. Find P99, which is the score separating the bottom 99% from the top

At what temperature do the following pairs of scales read the same, if ever? (a) Fahrenheit and Celsius (b) Fahrenheit and Kelvin (c) Celsius and Kelvin

How long would it take an object initially at rest to experience an acceleration of [tex]$99.8 \, \text{m/s}^2$[/tex] that results in a velocity of [tex]$489 \, \text{m/s}$[/tex]?

Let [tex]$f(x)=7x-4$[/tex].What is [tex]$f(6)$[/tex]?A. 46 B. 38 C. 42 D. 48

A chair is pulled by two horizontal forces. The first force is 122 N at an angle of [tex]$43.6^{\circ}$[/tex], and the second is 97.6 N at an angle of [tex]$49.9^{\circ}$[/tex].

If \( RS = 39.3 \) and \( QS = 54.4 \), find \( QR \). A. \( QR = 93.7 \) B. \( QR = 15.1 \) C. \(

Perform each conversion from one metric unit of mass to another. 1. [tex]\( 35.9 \, \text{kg} = 35900000 \, \text{mg} \)[/tex] 2. [tex]\( 0.573 \, \mu g = \, \square

Ammonium nitrite decomposes to give off nitrogen gas and liquid water. How many grams of ammonium nitrite must have reacted if 2.58 L of gas was collected over water in

A 39.4 mL sample of a 0.486 M aqueous acetic acid solution is titrated with a 0.485 M aqueous sodium hydroxide solution. What is the pH after 27.5 mL of