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Questions in physics

[Answered] Calculate the change in the kinetic energy (KE) of the bottle when the mass is increased. Use the formula [tex]$K E=\frac{1}{2} m v^2$[/tex], where [tex]$m$[/tex] is the mass and [tex]$v$[/tex] is the speed (velocity). Assume that the speed of the soda bottle falling from a height of 0.8 m will be [tex]$4 m / s$[/tex], and use this speed for each calculation. Record your calculations in Table A of your Student Guide. When the mass of the bottle is 0.125 kg, the KE is [ ] [tex]$kg \cdot m ^2 / s ^2$[/tex]. When the mass of the bottle is 0.250 kg, the KE is [ ] [tex]$kg \cdot m ^2 / s ^2$[/tex] When the mass of the bottle is 0.375 kg, the KE is [ ] [tex]$kg \cdot m ^2 / s ^2$[/tex] When the mass of the bottle is 0.500 kg, the KE is [tex]$kg \cdot m ^2 / s ^2$[/tex]

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

[Answered] The equation $T^2=A^3$ shows the relationship between a planet's orbital period, $T$, and the planet's mean distance from the sun, $A$, in astronomical units, $A U$. If planet $Y$ is twice the mean distance from the sun as planet $X$, by what factor is the orbital period increased? A. $2^{\frac{1}{3}}$ B. $2^{\frac{1}{2}}$ C. $2^{\frac{2}{3}}$ D. $2^{\frac{3}{2}}$

[Answered] Select the correct answer. A ball is whirled overhead at a velocity of 12 meters/second in a circular path whose radius is 2 meters. Select the value listed below that must be substituted for $c$ if the equation for determining centripetal force is defined in this way: [tex]x=\frac{\mu_a}{a}[/tex] A. 2 B. 5 C. 6 D. 12

[Answered] Match each form of energy with its description: Chemical energy Nuclear energy Thermal energy Electrical energy Descriptions: - found in the flow of electrical charges - found in the bonds between atoms - found when internal energy is transferred - found in the nucleus of an atom

[Answered] Identify the unknown particle $X$ in the following nuclear reaction equations. (Enter your answers in the form ${ }_z^A X$.) (a) ${ }_0^1 n + X \rightarrow{ }_{50}^{131} Sn +{ }_{42}^{103} Mo +2{ }_0^1 n$

[Answered] How much pressure does it take to boil water?

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

[Answered] Which of the following quantities is inversely proportional to the gravitational pull between two objects? A. The sum of their masses B. The sum of their volumes C. The square of the distance that separates them D. The distance from their center to their surface

[Answered] How much pressure does it take to boil water?