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Questions in physics

📝 Answered - Which two factors are used to calculate the kinetic energy of an object? A. gravity and velocity B. velocity and mass C. mass and volume D. volume and height

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Super fine 40-gauge copper wire has a diameter of only 0.080 mm and weighs only $44.5 g / km$. Suppose a spool of 40-gauge wire weighs $575 g$ less after some wire is pulled off to wind a magnet. How could you calculate how much wire was used? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. length of wire = $\square$

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Which object has the greater mass? Which object has the greater volume? Which object has the greater density?

📝 Answered - Which is the BEST abbreviation for the "Laws of Gravity" so that it can be clearly identified when studying from your notes? A. GV law B. L of G C. VGLity D. Newt's grav.

📝 Answered - $\begin{array}{l} \overrightarrow{r_1}=2 t i-t^2 j+\left(3 t^2-4 t\right) k \\ \overrightarrow{r_2}=\left(5 t^2-12 t+4\right) i+t^3 j-3 t k \end{array}$ Express in vector form, the radiative Velocity of the 2nd particle with respect to the 1st particle at [tex]$2 s$[/tex]. Find Velocity Vector of [tex]$\vec{r}_1=2$[/tex]

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - If a thermometer indicates 30 degrees Celsius, what's the temperature in degrees Fahrenheit? A) 24°F B) 86°F C) 17°F D) 54°F