In which of the following is the metric unit paired with its correct abbreviation? gram/gm centimeter/km kilogram/cg microgram/mg milliliter/mL

125. Sand is often placed on an icy road because the sand (1) decreases the coefficient of friction between the tires of a car and the road (2) increases the coefficient of friction between the tires of a car and the road (3) decreases the gravitational force on a car (4) increases the normal force of a car on the road

1. From Example A of Explain 3, determine the height of the ball when it was released by Grayson and Reggie. Recall that the initial height is found by solving for f(0)

Which of the following parameters affect the zero temperature? a) The initial pressure b) The type of gas c) Neither the type of gas nor the initial pressure d) Both the type of gas and the initial pressure

A coin completes 18 spins in 12 seconds The centripetal acceleration of the edge of the coin is 2.2m/s^2 The radius of the coin is square m

9) 7) A magnifying glass has a converging lens of focal length 15 cm. At what distance from a postage stamp should you hold the lens to get a magnification of +2

What is the BEST description of this attempt? precise and accurate not accurate and not precise precise only accurate only

A -0.00325C charge q_(1) is placed 5.62 m from a second charge q_(2) The first charge is repelled with a 48900 N force. What is the value of q_(2) ? Include the sign of the charge (+or-) [?]C square

1 & 6.5 2 & 5.8 3 & 6.3 Add: 6.5 mathrm(~m) / mathrm(s)+5.8 mathrm(~m) / mathrm(s)+6.3 mathrm(~m) / mathrm(s)=mathrm(m) / mathrm(s) Divide by (# of trials) Average speed =mathrm(m) / mathrm(s)

What is the PE of a 2 kg rock that is held 10 meters above the ground? 200J 100J 20J 400J

Hot Questions

A certain wave function is given by $\psi (x)=\{ \begin{matrix} A&for-a\leqslant x\leqslant a\\ 0&otherwise\end{matrix} $ Which of the following corresponds to the Fourier transform for this wave function? A sum of spherical harmonics. A sum of sines and cosines. A sum of Hankel functions. The Dirac delta function.

8> What is the random capture theory? Which theory best explains how our solar system was created?

Which of the following expressions correspond to the energy-time uncertainty principle? $\Delta E\Delta t\geqslant 2\bar {h}$ $\Delta E\Delta t\geqslant \hat {h}$ $\Delta E\Delta t\geqslant \frac {h}{2}$ $\Delta \omega \Delta t\geqslant \bar {h}$

A wave function can be expanded in basis states as $\vert \psi \rangle =\sum _{n}a_{n}\vert \psi _{n}\rangle $ What must be true of the expansion coefficients? $\sum _{n}\vert a_{n}\vert ^{2}=1$ They must be real numbers. There is no restrictions on the coefficients. $\sum _{n}a_{n}=1$

Match each statement to the wave interaction it describes. \begin{array}{|l|l|} \hline\ reflection\ &\ Waves\ bounce\ off\ an\ object.\ \\ \hline\ absorption\ &\ Waves\ are\ taken\ in\ by\ an\ object.\ \\ \hline\ transmission\ &\ Waves\ bend\ while\ passing\ from\ one\ medium\ to\ another.\ \\ \hline\ diffraction\ &\ Waves\ scatter\ through\ an\ opening\ or\ around\ an\ object.\ \\ \hline\ retraction\ &\ Waves\ go\ through\ an\ object.\ \\ \hline \end{array}

Consider the following force: A fridge magnet is pulling on a paper clip. According to Newton's third law what other force must be happening? The paper clip is pushing on the fridge magnet. The paper clip is pulling on the fridge magnet.

For Newton's third law the action and reaction forces are equal in magnitude and opposite in direction. A True B False

Which one of the following actions will increase the current ratio, all else constant? Assume the current ratio is greater than 1.0

11. ¿Qué es un campo gravitacional? A) Una región donde se experimenta una fuerza eléctrica. B) Una región donde se experimenta una fuerza magnética. C) Una región donde se experimenta una fuerza gravitacional D) Una región sin ninguna fuerza.

Why is a solid less compressible than a gas? Gases have more volume Solids are made of metals Solid particles are tightly packed Solids are heavier