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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] Which object has the greater mass? Which object has the greater volume? Which object has the greater density?

[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

[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 40 degrees Celsius, what's the temperature in degrees Fahrenheit? A) 54°F B) 104°F

[Answered] A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sled's potential energy? (Formula: [tex]PE=mgh[/tex]) A. 90 J B. 56.8 J C. 441 J D. 882 J