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Questions in physics

[Answered] A graph depicts force versus position. What represents the work done by the force over the given displacement? A. The work done is equal to the product of the maximum force times the maximum position. B. The work done is equal to the area under the curve. C. Work cannot be determined from this type of graph. D. The work done is equal to the length of the curve. E. The work done is equal to the slope of the curve.

[Answered] An object with mass 60 kg moved in outer space. When it was at location \(\langle 13, -19, -3 \rangle\), its speed was 3.5 m/s. A single constant force \(\langle 220, 320, -120 \rangle\) N acted on the object while the object moved from location \(\langle 13, -19, -3 \rangle\) m to location \(\langle 18, -11, -8 \rangle\) m. Then a different single constant force \(\langle 150, 230, 220 \rangle\) N acted on the object while the object moved from location \(\langle 18, -11, -8 \rangle\) m to location \(\langle 22, -17, -3 \rangle\) m. What is the speed of the object at this final location? Final speed = ______ m/s

[Answered] Two diverging light rays, originating from the same point, have an angle of [tex]5^\circ[/tex] between them. After the rays reflect from a plane mirror, what is the angle between them? Construct one possible ray diagram that supports your answer.

[Answered] I just need the equation on how to do it. I'm so lost :'( help please!!!!!!

[Answered] A 55 kg female bungee jumper fastens one end of the cord (made of elastic material) to her ankle and the other end to a bridge. Then she jumps off the bridge. As the cord stretches, it exerts an elastic force directed upward on her. Calculate her acceleration at the instant the cord exerts an elastic force of 825 N [up] on her.

[Answered] A sound wave of 70 cm travels 840 m in 2.5 seconds. What is the velocity and frequency of the sound?

[Answered] What questions could you ask your friend to help them differentiate between evaporation and boiling?

[Answered] Why do dogs pant during the summer? Use the concept of evaporation to explain.

[Answered] I figured out the 1st question but I do not understand the second one...please show me step by step! Thank you!

[Answered] a subway train starts from rest at a station and accelerates uniformly at 1.8m/s^2 for 15 sec. then it runs at a constant speed for the next 35 sec. before decelerating at 2.0m/s^2 until it comes to rest at the next station. FIND THE DISTANCE between the stations and the AVERAGE SPEED of the train. (please show step by step and the formula that is used. Thank you!)