A 160-lb person burns about 2900 calories to run a marathon. how much energy is burned in kj? assume two significant figures.

Is water wet my friends have been arguing about this for about 3 months now but now it is time to hear other people MY opinion, it is not wet the substance itself makes things wet.

List possible limitations to scientific models

If water had a lower specific heat capacity, would ponds and lakes be more likely or less likely to freeze in winter?

The acceleration due to gravity on Jupiter is greater than that on Earth. On Jupiter, a person will weigh.

A pendulum has a period of 0.3 second. What is its frequency?

Steam enters an adiabatic turbine steadily at 3 mpa and 400°c and leaves at 50 kpa and 100°c. if the power output of the turbine is 2 mw, determine (a) the isentropic efficiency of the turbine and (b) the mass flow rate of the steam flowing through

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

Which inventor created a delivery system for electricity that was deemed safer than Thomas Edison's system? a. Henry Flagler b. George Proctor c. George Westinghouse d. Thomas DeSaille Tucker

Which is the most closely related to the color of an acid-base indicator when dipped into solution? A.) The hydronium ion concentration in the solution. B.) The total amount of solution present. C.) The number of water molecules in the solution. D.

If a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. Water will move out of the cell, causing it to swell. b.