A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density of a 240-g rock that displaces 89.0 cm³ of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedes' principle.)

Solve the system of equation by substitution for real values of x and y.

$$\left\{ \begin{array} { l } { x ^ { 2 } + y ^ { 2 } = 30 } \\ { y = x ^ { 2 } } \end{array} \right.$$

Describe the steps you would use to write an equation of the line through the points (-2, 3) and (0, 9).

A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density of a $240-\mathrm{g}$ rock that displaces $89.0 \mathrm{~cm}^3$ of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedes' principle.)

Find the escape speed of a projectile from the surface of Jupiter.

What is the mass of a deep breath of air having a volume of 2.00 L? Discuss the effect taking such a breath has on your body's volume and density.

Gold is sold by the troy ounce (31.103 g). What is the volume of 1 troy ounce of pure gold?

Plot the ordered pair in a coordinate plane. (-1, -2)

A moving object that makes a sound will sound differently if the object is moving toward or away from you due to the _.

A glass tube contains mercury. What would be the height of the column of mercury which would create pressure equal to 1.00 atm?

Solve the inequality. Check your solution. t + 1/5 < 2 7/10

When a woman in high-heeled shoes takes a step, she momentarily places her entire weight on one heel of her shoe. If her mass is $56 \mathrm{~kg}$ and if the area of the heel is $1 \mathrm{~cm}^2$, what is the pressure exerted on the floor by her heel?

A 2.50-kg steel gasoline can holds 20.0 L of gasoline when full. What is the average density of the full gas can, taking into account the volume occupied by steel as well as by gasoline?

Why is it preferable for airplanes to take off into the wind rather than with the wind?