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A car waits at a red light for a few seconds, and then accelerates straight ahead to 54 km/h in 3.1 s and then cruises at a constant speed for 75 m. The road is straight. Find the total distance and time travelled.
A wheel of radius 0.6 m starts from rest and accelerates without slipping with an angular acceleration of 2.0 rad/sec^2 for 10 s. what is its final linear velocity
A cubical piece of heat-shield-tile from the space shuttle measures 0.15 m on a side and has a thermal conductivity of 0.065J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1240°C, while the inner surface is maintained at a tem..
Objective questions based on work, energy, power.
On a hot summer day a young girl swings on a rope above the local swimming hole. how high above the water was she when she let go of the rope
a slab ofmass m1 = 40 kg rests on africtionless floor, and a block ofmass m2 = 10 kg rests on top of theslab. Between block and slab, What is the resulting acceleration of the slab
If the temperature of 2.000 moles of an ideal gas is increased by 50°C, then what is the increase in the total internal energy
Two point charges totaling 6.10 µC exert a repulsive force of 0.140 N on one another when separated by 0.500 m. what is the charge on each if the force is attractive
A uniform rod of mass M = 2 kg and length L = 1.5 m is attached to a wall with a frictionless pivot, What is the angular acceleration of the rod
82 L of an ideal monatomic gas is at an absolute pressure of 4.2 atm when the temperature is 25 C. what is the change in the internal energy of the gas
Energy to Accelerate a Spaceship to Relativistic Speed: How much energy is required to accelerate a spaceship with a rest mass of 116 metric tons to a speed of 0.446c
For N2 at 25oC and 1.00 atm calculate the number of collisions per second made by one molecule; the number of collisions per second per cubic centimeter; compare these values to N2 at 25oC and 1.0*10^-6 torr using the values already calculated Show a..
The bunchberry flower has the fastest moving parts ever seenin a plant. Initially the stamens are held by the petals in abent position storing elastic energy liked a coiled spring. find the speed of the anther sac as it relases itspollen
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