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Questions in physics

[Free] Arrange each tire to the correct box. Arrange the distances between Earth and various celestial objects in order from least to greatest. Use the conversion table to help you. \begin{tabular}{|l|l|} \hline \multicolumn{2}{|c|}{ Conversion Table } \\ \hline 1 AU & $1.5 \times 10^8 km$ \\ \hline 1 ly & $63,000 AU$ \\ \hline 1 pc & 3.262 ly \\ \hline \end{tabular} distance to the star Betelgeuse: 640 ly distance to the star VY Canis Majoris: $3.09 \times 10^8 AU$ distance to the aalayo Larme Mamellanic

[Free] A lineman is inspecting a heater circuit that consumes 2000 watts of power, with a current of 10 amps flowing through it. Using the formula [tex]R =\frac{P}{I^2}[/tex], calculate the resistance of the heater.

[Free] A graph of gas pressure versus the number of particles in a container is a straight line. Which other have a similar graph? A. volume versus pressure, because they are also directly proportional B. volume versus temperature, because they are also directly proportional C. volume versus pressure, because they are also inversely proportional D. volume versus temperature, because they are also inversely proportional

[Free] Watch Video Show Exam The density of a certain material is such that it weighs 32 grams for every 5 cups of volume. Express this density in pounds per liter. Round your answer to the nearest hundredth. *Note: you must use these exact conversion factors to get this question right. \begin{tabular}{|l|l|} \hline Weight / mass & Volume \\ \hline 1 pound (lb) = 16 ounces (oz) & 1 cup (cup) = 8 fluid ounces (fl oz) \\ \hline 1 ton (ton) = 2000 pounds (lb) & 1 pint (pt) = $2 \operatorname{cups}(\operatorname{cups})$ \\ \hline 1 gram (g) = 1000 milligrams (mg) & 1 quart ( qt ) $=2$ pints ( pt ) \\ \hline 1 kilogram (kg) = 1000 grams (g) & 1 gallon (gal) = 4 quarts (qt) \\ \hline 1 ounce $( oz )=28.35$ grams (g) & 1 cubic foot $\left( ft ^3\right)=7.481$ gallons (gal) \\ \hline 1 pound ( Ib ) $=0.454$ kilograms (kg) & 1 liter (L) = 1000 milliliters (mL) \\ \hline & 1 cubic meter $\left( m ^3\right)=1000$ liters (L) \\ \hline & 1 gallon $( gal )=3.785$ liters $( L )$ \\ \hline \end{tabular}

[Free] Which best defines pressure? A. a measure of the number of particles in a unit area B. a measure of the force of the collision of particles on a unit area C. a measure of the number of particles on the outside of a container D. a measure of the force of the collision of particles on the inside of a container

[Free] Select the correct answer. Kepler's third law, [tex]P^2=k A^3$[/tex], shows the relationship between a planet's orbital period [tex]$(P)$[/tex] and the length of its semi-major axis [tex]$(A)$[/tex]. Which statement is true about Kepler's law? A. The orbital period is measured in units of time, and the semi-major axis is measured in units of mass. B. The value [tex]$k$[/tex] is constant for each of the eight planets in our solar system. C. For a body orbiting the Sun, increasing the orbital period increases the length of the semi-major axis. D. To calculate the value of k for a planet in our solar system, find [tex]$A^3+P^2$[/tex] for the planet.

[Free] A worker pushes a box across the floor. Which option correctly describes what happens, based on Newton's third law of motion? A. The box pushes back against the worker with less force. B. The box pushes back against the worker with an equal force. C. The box pushes back against the worker with a greater force.

[Free] Which of the following best describes energy? A. the ability to store power in chemical structures B. the ability to move objects or materials from one place to another C. the capacity or power to do work, or to transfer power elsewhere D. the capacity to produce heat

[Free] The amount of energy that Earth receives from the Sun per unit area is [tex]$I$[/tex]. To find [tex]$I$[/tex], we can use this formula: [tex]$l=\frac{3.8 \times 10^{26}}{4 \pi r^2}$[/tex] In the formula, the variable [tex]$r$[/tex] represents the distance from the Sun. Based on this formula, what effect will a highly eccentric orbit have on the amount of energy received by the Sun? Answer in terms of perihelion and aphelion.

[Free] Two resistors of resistances 55Ω and 75Ω connected in series are connected to four cells, each of 1.5V and internal resistance 0.8Ω. If the cells are connected in series, calculate the current passing through the circuit.