The data in the following table represent measurements of the masses and dimensions of solid cylinders of aluminum, copper, brass, tin, and iron. (a) Use these data to calculate the densities of these substances. (b) State how your results compare with those given in Table 14.1.

A car engine moves a piston with a circular cross section of 7.5000.002 cm diameter a distance of 3.2500.001 cm to compress the gas in the cylinder. (a) By what amount is the gas decreased in volume in cubic centimeters? (b) Find the uncertainty in this volume.

Convert the following to equivalent temperatures on the Celsius and Kelvin scales: (a) the normal human body temperature, 98.6F; (b) the air temperature on a cold day, 5.00F.

(a) Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium. (b) Making the same assumption, how many cells are there in a human?

Q1. a) Choose which quantity/unit is fundamental, or derived quantity/unit by ticking (√ ).  Sl No Quantity Fundamental Quantity Derived Quantity Fundamental Unit Derived Unit Example m/s       √ 1 volume         2 J/kg         3 viscosity         4 N/m         5 Surface tension         6 Angular velocity         7 s-2         8 Heat flux density         9 V/m         10 Thermal conductivity

1.) A typical person has an average heart rate of 69.0 beats/min. Calculate the given questions. How many beats does she have in 7.0 years? How many beats in 7.00 years? And finally, how many beats in 7.000 years? Pay close attention to significant figures in this question. 2.The specific heat of a certain type of cooking oil is 1.75 cal/(g ·°C). How much heat energy is needed to raise the temperature of 2.75 kg of this oil from 23 ∘C to 191 ∘C? 3.) A 232 mL cup of whole milk contains about 27 mg of cholesterol. Express the cholesterol concentration of the milk in kilograms per cubic meter (kg/m3). 4.) Convert the volume to its equivalent in milliliters. 33.0uL=mL

Consider the equation a=6πb/q√17 relating the variables a, b and q. If a scientist does an expirment in which b is held constant, q is varied, and a is measured.  A. What specifically about the graph would confirm the relationship? B. What is the theoritical slope of the line on the graph?

1. Express the product of 0.724 and 0.1 following the rules for significant figures. a. 0.1 b. 0.0724 c. 0.072 d. 0.07 2. An object is immersed in water inside a beaker initially are at toom temperature of 30 degrees Celsius. By the addition of heat, the temperature of the mixture reaches 95 degrees Celsius. Find the change in temperature of the mixture. a. 95 degrees Celsius b. 65 degrees Celsius c. 60 degrees Celsius d. 30 degrees Celsius 3. The lowest temperature recorded in northern hemisphere is -90 degrees Fahrenheit in Siberia, Russia. Find the temperature in Kelvin scales. a. 205 K b. 5 K c. 217 K d. 326 K