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A 1200 kg truck is accelerating uniformly from rest to 20.0 m/s east while travelling 30.0 m east across the level ground. The coefficient of friction between the tires and the road is 0.45. What is the acceleration of the truck? What is the force of friction? How much work was done during the acceleration?
A spelunker is surveying a cave. He follows a passage that goes 178 m straight west, then 214 m in a direction 45° east of south, then 283 m at 30° east of north. determine the fourth displacement
suppose that the steel gas tank in your car is completely filled when the temperature is 14deg c. how many gallons
The drawing shows the potential at five points on a set of axes. find the magnitude of the electric field in the vicinity of the origin
Waves moving on a lake have a speed of 2.3 m/s and a distance of 1.8 m between adjacent crests. Find the period of the wave motion
A particle is in uniform circular motion about the origin of an xy coordinate system, moving clockwise with a period of 7.70 s. what is its velocity in unit-vector notation
Consider an RC circuit with R = 3.10k? , C = 1.40?F . The rms applied voltage is 240V at 60.0Hz. compute the phase angle between voltage and current
you have a mechanism by which you can use a magnetic spectrograph to chose the energy of the beta rays from a 137cs
18.53 Mars is 1.52 times farther away from the sun than the earthis and has a diameter.532 times that of the Earth. Estimate the tempreature on the surface of Mars
a skier is pulled up a slope at a constant velocity by a tow bar. the slope is inclined at 25.5deg with respect to the
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 145°C. What is the rms speed of each type of molecule
Find the tension in each of the two ropes supporting a hammock if the first one is at an angle of 13.5° above the horizontal and the second is at anangle of 35.4° above the horizontal. The person sleeping in the hammock (unconcerned abouttensions ..
A 2.5 meter long elastic cord is fixed at both ends. at what frequency should this cord be vibrated such that a n-10 standing wave is produced
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