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Questions in physics

[Homework Help] In 45 seconds, a rocket goes from traveling at [tex]$75 m / s$[/tex] to [tex]$570 m / s$[/tex]. What is the acceleration of the rocket? [tex]$a=[?] \frac{m}{s^2}$[/tex] Enter the sign (+ or -) and the magnitude. Remember: [tex]$a =\frac{\Delta V }{ t }$[/tex]

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

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

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

[Homework Help] The surface area of a small piston is $\frac{1}{10}$ the surface area of a large piston. Find the input force if the output force is $20,000 N.

[Homework Help] Including reaction time, the stopping distance is more than 20 feet at 10 miles per hour. At 20 miles per hour it will be about: A. 30 feet B. 63 feet C. 40 feet D. 75 feet

[Homework Help] A pound of water weighs more than a kilogram of water. Select one: A. True B. False

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

[Homework Help] What force makes a football move when you throw it? A. weak force B. contact force C. friction D. gravitational force

[Homework Help] Choose the phrases that you think of when you hear the word Sun. Check all that apply. center of the solar system hot sunbum solar energy star source of energy for life solar radiation