1. Which of the following was Archimede's not responsible for? the ship shaker the log mover Archimede's screw the composition of the king's crown
The structure,properties, and transformations of matter can best be explained by which of the following?
6 The mass of an electron in grams is written with a decimal point followed by 27 zeros and a 9. In scientific notation, this would be written as A 9times 10^27 B 9times 10^-27 C 9times 10^28 D 9times 10^-28
On average, a granny smith apple has a density of 0.930g/cm^3 Let's say you have a granny smith apple that weighs 345 grams Assuming it is of average density, what would be its volume in mL? Round to the correct number of significant figures. square
Which tool would you use to measure the mass of the rock? triple beam balance ruler graduated cylinder thermometer
What are some properties of your pencil, a sheet of paper or a metal fork? List properties of each. Your answer
21 Synthesize Describe how the properties of sound waves change as they spread out in a spherical pattern.
Which action best describes the Doppler effect? The absorption and emission of light and other radiation by matter The apparent change in frequency of waves due to the motion of a source The rate of vibrations producing it causes the height or depth of sound The measure of a star's true brightness and total energy emitted in space
2. How do the properties of liquids make the displacement method of measuring volume possible?
Multiple Choice 1 point A man on an airplane is walking toward the back of the airplane at 7m/s The plane is flying West at 245m/s What is the speed and direction of the man relative to the ground? 238m/s, East 238m/s, West 252m/s East 252m/s West
\#4) A mass of 4 kg stretches spring 40 cm. The mass is acted on by an external force of $180e^{-2t}+196N$ and moves in a medium that imparts a viscous force of 34 N when the speed of the mass is $\frac {1}{3}m/sec$ Mass is set in motion from equilibrium position with an initial velocity of $1m/sec$ A) Formulate an initial value problem $(IVP)$ B) Solve the IVP
When a stone is dropped in a pond ripples are formed and travel in concentric circles away from where the stone. was dropped. The equation of the least-squares regression line is $\hat {Area}=0.010+3.141(Time^{2})$ What is the predicted area, in $cm^{2}$ of the circle 8 seconds after the stone was dropped? $25.14cm^{2}$ $50.27cm^{2}$ $64.01cm^{2}$ $201.03cm^{2}$
Caleb is investigating the effect of friction on the motion of an object. He uses the following supplies for the investigation: a wooden block three ramps, each ramp is the same height and length but has a different surface (smooth wood, carpet rough sandpaper) a stopwatch
All the following are correct,except: The law of conservation of energy states that energy can never be created or destroyed. When food is cooked on a stove. some of the thermal energy from the burner transfers to the surrounding air. During the transfer of thermal energy, no energy is gained or lost. Energy cannot change form
For a given process a system emits 322kJ of heat at the same as it performs 22 kJ of work The values of $\Delta H$ and $\Delta E$ respectively are 322kJ and 344kJ $-322kJ$ and $-344kJ$ $-344kJ$ and $-322kJ$ 344kJ and 322kJ
How long (in seconds)must a de-orbit burn last if the rocket is 25,848kg and a rocket force of 53,000 newtons to go from 334.8 km to 96.5 km if the mass does not change
In a dam, water flows through a(n) __ to make electricity. wire generator battery Rewatch
5. (5 marks) A circular cylinder of radius $R=5$ m and height $H=10m$ half full of water.Using the density of water $\rho =1000kg/m^{3}$ and earth's gravitational constant $g=9.8N/kg$ calculate the work done in pumping all the water out the top. State your answer in scientific notation with two signficant figures, e.g. $1.4\times 10^{5}$ and with correct units. $\square $
9. Even though outer space has a temperature near zero Kelvin (absolute zero or about $-273^{\circ }C)$ water would exist only as a gas, and not a solid. Explain this phenomena in terms of air pressure and boiling points. 10. Would it take longer to cook a pot of pasta in Denver, Colorado, or Lincoln Nebraska?
36. A box falls off a warehouse shelf from a height of 64 feet. The function $h(t)=-16t^{2}+64$ represents the h, height in feet, after t seconds. How long does it take the box to hit the ground?
