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A truck initially going 10m/s slams on the breaks. If the coefficient between the truck's tires and road is %u03BC=0.4, what is the minimum stopping distance of the truck? Assume acceleration due to gravity g = 10m/s2. Hint: find the acceleration and then use the equation of motion without time t to solve for distance.
A tank having a volume of 0.100 m3 contains helium gas at 180 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
How many homes could be heated with the waste heat
If astronauts could travel at v = 0.950 c, we on Earth would say it takes (4.20 / 0.970) = 4.42 years to reach Alpha Centauri, 4.20 light-years away. The astronauts disagree. How much time passes on astronauts' clocks? What is the distance to Alph..
A civil engineer wishes to plan a curved exit ramp for a highway in a way that a car will not have to rely on friction to round the curve without skidding. In the other words, a car moving at the designated speed can negotiate the curve even while th..
A sample of gas (? = 1.5) is taken through an adiabatic process in which the volume is compressed form 1600 cc to 400 cc. If the initial pressure is 150 KPa, what is the final pressure? How much work is completed on the gas in process.
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
Suppose the amount of heat added to the ice block is doubled. By what factor must the mass of the ice be increased if the system is to have the same final temperature
An electron enters a magnetic field with a speed of 1.41x 10^6 m/s heading north and undergoes a semicircular path towards the east with a diameter of 10cm. find the time required to complete this semicircle
Two balls of the same mass are accelerated by different net forces such that one ball gains a velocity twice that of the other ball in the process. Is the work done by the net force acting on the faster moving ball twice that done on the slower mo..
A wheel with a tire mounted on it rotates at the constant rate of 2.87 times a second. find the tack's tangential speed
A 1200 turn coil of wire that is 3.00 cm in diameter is in a magnetic field that drops from 0.750 T to 0 T in 15.0 ms. What is the induced emf in the coil
In one cycle, a heat engine does 310 J of work and releases 620 J of heat to a lower-temperature reservoir. What is the efficiency of the engine
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