Answers created by Dang Thi ThanhHoa

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• You kick a ball with a speed of 4 m/s at an angle of 10°. How far away does the ball land?
  
• What is the final temperature after 840 J is absorbed by 10.0 g of water at 25°C?
  
• A `0.5kg` rubber ball is thrown straight up into the air. At a height of `20m` above the ground, it is travelling at `15m/s`. How do you answer the following questions?
  
• How do you find the midpoint of A (-3,-2) and B (5,-2)?
  
• Two charges of `-4 C` and `-2 C` are positioned on a line at points `-1` and `14`, respectively. What is the net force on a charge of `-2 C` at `1`?
  
• An object travels North at `5 m/s` for `3 s` and then travels South at `1 m/s` for `4 s`. What are the object's average speed and velocity?
  
• An object is at rest at `(3 ,8 ,8 )` and constantly accelerates at a rate of `7/5 m/s^2` as it moves to point B. If point B is at `(2 ,9 ,5 )`, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
  
• A container with a volume of `12 L` contains a gas with a temperature of `150^o C`. If the temperature of the gas changes to `620 ^o K` without any change in pressure, what must the container's new volume be?
  
• A charge of `36 C` passes through a circuit every `6 s`. If the circuit can generate `9 W` of power, what is the circuit's resistance?
  
• How do you find the local max and min for `f(x)=-sinx-cosx`?
  
• Some very hot rocks have a temperature of `340 ^o C` and a specific heat of `160 J/(Kg*K)`. The rocks are bathed in `72 L` of boiling water. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?
  
• How do you solve `2/3(12-x)>4`?
  
• The kinetic energy of an object with a mass of `3 kg` constantly changes from `60 J` to `270 J` over `8 s`. What is the impulse on the object at `5 s`?
  
• The gas inside of a container exerts `26 Pa` of pressure and is at a temperature of `220 ^o K`. If the pressure in the container changes to `54 Pa` with no change in the container's volume, what is the new temperature of the gas?
  
• An object with a mass of `8 kg` is revolving around a point at a distance of `1 m`. If the object is making revolutions at a frequency of `12 Hz`, what is the centripetal force acting on the object?
  
• An object with a mass of `7 kg` is on a ramp at an incline of `pi/12`. If the object is being pushed up the ramp with a force of `4 N`, what is the minimum coefficient of static friction needed for the object to remain put?
  
• How do you divide `(1-2i)/(1-3i)` in trigonometric form?