Answers created by SaiGanesh Gotetti

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• If a `2 kg` object is constantly accelerated from `0m/s` to `16 m/s` over 6 s, how much power musy be applied at `t=3`?
  
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• What is the conductivity of a conduit with a cross-sectional area of `0.60` `cm^2` and a length of `15` `cm`, given that its conductance `G` is `0.050` `ohm`?
  
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• How do you solve `x^2-2x=5` using the quadratic formula?
  
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• What is the work done when a sample of gas expands from 12.5L to 17.2L against a pressure of 1.29 atm? Give your answer in Joules.
  
• If work is zero, when is force nonzero?
  
• What formula is used to calculate resistance using the color code?
  
• A box with an initial speed of `9 m/s` is moving up a ramp. The ramp has a kinetic friction coefficient of `5/4` and an incline of `(3 pi )/4`. How far along the ramp will the box go?
  
• An object moving at a constant velocity of 5.4 m/s travels for 12 s. How far will it move during that time?
  
• A load of 15 N attached to a spring that is hanging vertically stretches the spring 35 cm. What is the spring constant of the spring?
  
• What is the force, in terms of Coulomb's constant, between two electrical charges of `44 C` and `39 C` that are `12 m` apart?
  
• A car with a mass of `1.5 * 10^3` kg starts from rest and accelerates to a speed of 18.0 m/s in 12.0s. Assume that the force of resistance remains constant at 400 N during this time. What is the average power developed by the car's engine?
  
• A container has a volume of `12 L` and holds `15 mol` of gas. If the container is expanded such that its new volume is `21 L`, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?
  
• What is the prime factorization of 364?
  
• What is the projection of `(-i + j + k)` onto `( i - j + k)`?
  
• How do you solve `5y - 11= - 51`?
  
• A car has a mass of `1,500` `kg` and an acceleration of `2.0` `m``/s^2`. What is the net force acting on the can?
  
• Which is warmer -30°C or -30 F?
  
• What is the dot product of `<1,5,-3 >` and `<-1,4,2 >`?
  
• What is the cross product of `[0,8,5]` and `[2, 4, 8]`?
  
• A model train with a mass of `9 kg` is moving along a track at `18 (cm)/s`. If the curvature of the track changes from a radius of `24 cm` to `42 cm`, by how much must the centripetal force applied by the tracks change?
  
• What is the angular momentum of an object with a mass of `4 kg` that moves along a circular path of radius `30 m` at a frequency of `15 Hz`?
  
• If `A = <6 ,4 ,-3 >`, `B = <7 ,1 ,-4 >` and `C=A-B`, what is the angle between A and C?
  
• Which has more momentum, a `7kg` object moving at `8m/s` or a `4kg` object moving at `9m/s`?
  
• A solid disk with a radius of `3 m` and mass of `4 kg` is rotating on a frictionless surface. If `120 W` of power is used to increase the disk's rate of rotation, what torque is applied when the disk is rotating at `8 Hz`?
  
• A charge of `-2 C` is at `(6 , -5 )` and a charge of `-4 C` is at `(-3 , -9 )`. If both coordinates are in meters, what is the force between the charges?
  
• What is the formula for calculating momentum?
  
• What is the force, in terms of Coulomb's constant, between two electrical charges of `-8 C` and `-12 C` that are `3 m` apart?
  
• The gas inside of a container exerts `15 Pa` of pressure and is at a temperature of `220 ^o C`. If the temperature of the gas changes to `10 ^oC` with no change in the container's volume, what is the new pressure of the gas?
  
• A model train, with a mass of `6 kg`, is moving on a circular track with a radius of `7 m`. If the train's rate of revolution changes from `1 Hz` to `2 Hz`, by how much will the centripetal force applied by the tracks change by?
  
• How much work would it take to push a `5 kg` weight up a `2 m` plane that is at an incline of `pi / 6`?
  
• What torque would have to be applied to a rod with a length of `4 m` and a mass of `3 kg` to change its horizontal spin by a frequency of `3 Hz` over `2 s`?
  
• An object with a mass of `2 kg` is moving at `5 m/s` over a surface with a kinetic friction coefficient of `2`. How much power will it take to accelerate the object at #8 m/s^2?
  
• What is the field strength, `E`, experienced by a test charge, `q`, if a charge of `1.0*10^-6` coulombs is placed on `q` and a force of `6.2` `N` is applied?
  
• A projectile is shot from the ground at a velocity of `25 m/s` and at an angle of `(2pi)/3`. How long will it take for the projectile to land?
  
• What is the moment of inertia of a rod with a mass of `3 kg` and length of `4 m` that is spinning around its center?
  
• An object with a mass of `2 kg` is traveling in a circular path of a radius of `4 m`. If the object's angular velocity changes from `4 Hz` to `9 Hz` in `3 s`, what torque was applied to the object?
  
• What is the force, in terms of Coulomb's constant, between two electrical charges of `-45 C` and `60 C` that are `15 m` apart?
  
• How much work would it take to push a `8 kg` weight up a `7 m` plane that is at an incline of `pi / 12`?
  
• What is the unit vector that is normal to the plane containing 3i+7j-2k and 8i+2j+9k?
  
• What is the cross product of `<7, 5 ,6 >` and `<3 ,5 ,-2 >`?
  
• An object is thrown vertically from a height of `2 m` at `5m/s`. How long will it take for the object to hit the ground?
  
• A force of 65N is required to keep a 16kg block sliding across a horizontal surface at a constant speed of 5m/s. What is the coefficient of kinetic friction on the surface?
  
• An object with a mass of `5 kg` is on a surface with a kinetic friction coefficient of `4`. How much force is necessary to accelerate the object horizontally at `12 m/s^2`?
  
• What is Newton's Law of Cooling?
  
• What is the angular momentum of a rod with a mass of `5 kg` and length of `4 m` that is spinning around its center at `1 1 Hz`?