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A truck driver delivering office supplies downtown travels 3 blocks south, 3 blocks west, and finally nine blocks south. What are the magnitude (in blocks) and the direction of the driver's displacement? (Enter an angle among 0 and 90°.)
A car moving with constant acceleration travels the distance between two cones located 69.2 meter apart in 3.17 second. Determine its velocity as it passed the first cone
A boy whirls a ball on a string in a horizontal circle of radius 0.8 meter, such that the centripetal acceleration is equal to g. Calculate the frequency of the ball in revolutions per minute
Two particles with masses m1 = 1 kg and m2 = 3 kg are moving toward each other along the x axis with the same initial speeds vi = 1 m/s. Find the final speeds of the two particles
A pipe has a narrow end compared to the other end. The area of the narrow section is one-half the area of the wide section. find the velocity of the water in the wider section
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 2 state, What is the energy of the Hydrogen atom
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. what is the current in the solution
What is the magnitude of the acceleration of an electron at a point where the electric field has magnitude 6667 N/C and is directed due north
two gas cylinders are identical. one contains the monatomic gas neon ne and the other contains an equal mass of the
q1. sea launch mission planners are going to launch their russian launch vehicle from a lo 3 degrees into leo with an
a diver springs upward from a board that is three meters above the water. at the instant she contacts the water her
A tank of compressed air of volume 1.0 m3 is pressurized to 40.0 atm at T = 273 K. A valve is opened and air is released until the pressure in the tank is 33.0 atm. How many air molecules were released?
An electric eel develops a potential difference of 490V , driving a current of 0.85A for a 1.0 ms pulse. Find the total energy of this pulse
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