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Question
Starting from rest at time t=0 a car moves in a straight line with an acceleration plotted on an accleration vs time graph as follows:
t=0 a = 5 m/s2t=1 a= 4 m/s2t=2 a = 3 m/s2t=3 a = 2 m/s2
What is the speed of the car at t=3 s? Please show work. Please use kinematic equations or algebra to solve.
Compare temperature and dew point at stations east and west of the cold front on June 2. How sharp was the contrast in air masses on this date
A convex spherical mirror by a radius of curvature of19.5 cm produces a virtual image one fourth the size of the real object. Where is the object?
A researcher observes hydrogen emitting photons of energy 2.55eV. What are the quantum numbers of the two states involved in the transition that emits these photons
The spheres are brought into contact and then separated to a distance of 2.40 cm. Determine the magnitude of the force that each sphere now experiences, and state whether the force is attractive or repulsive.
A parallel-plate capacitor has 3.95 cm2 plates that are separated by 4.29 mm with air between them. If a 11.2 V battery is connected to this capacitor, how much energy does it store? The value of the permittivity of a vacuum is 8.8542 × 10 ^?12 C^..
A student driving home for the holidays starts at 7:00 AM to make the 700km trip, practically all of which is on nonurban interstate highways. What must be her minimum average speed
What is the electric force (with direction) on an electron in a uniform electric field of strength 2510 N/C that points due east? Take the positive direction to be east.
A man stands next to a 1.36 m tall barrel with a diameter of 0.58 m. If the barrel is empty, he can see 0.68 m down the far side of the barrel. At what angle relative to the normal line is the light traveling to the man's eyes
A wave has the following properties: amplitude = 0.208 m, period = 0.687 s, wave speed = 13.7 m/s. The wave is traveling in the -x direction
The force required to stretch a Hooke’s-law spring variesfrom 0 N to 51.6 N as we stretch the spring by moving one end 5.88cm from its unstressed position.
A car is traveling at 85.1 kilometer per hour at this speed the car has a fuel efficiency of 14.5 km/L. Compute the average flow rate of gasoline into the engine
A soil sample is subjected to a tri-axial test where the measured hydrostatic stress is 450 kPa; the applied deviator stress is 460 kPa; and the measured water pressure is 80 kPa. determine Angle of the failure plane
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