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A car is driven 165 km west and then 95 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
An irrigator uses the (old-fashioned) concept of plant available water to determine the irrigation water quantity needed to irrigate a 10 ha field, How much water does the irrigator need to apply
if the magnitude of the force between two identical 100. microcoulomb negative charges is 9N. How far apart are the charges
A system of 1402 particles, each of which is either an electron or a proton, What is the mass of this system
The calorimeter is constructed of a material that has a specific heat of 0.10 cal/ g. ^{circ}C. When equilibrium is reached, what will be the final temperature.
Two loudspeakers in a 20°C room emit 629 Hz sound waves along the x-axis, If the speakers are out of phase, what is the smallest distance between the speakers for which the interference of the sound waves is constructive
A cannon with mass of 2000kg fires a 10kg shell at an angle of 60 degrees above the horizontal. what is the velocity of the cannon ball
A 690 g wood block is at rest on a frictionless table, when a 27 g bullet is fired into it. what was the original speed of the bullet
An airplane reaches a velocity of 71.0m/s when it takes off. What is should its acceleration be if the runway is 1-km long.
Calculate the work done by the electric field force on an electron when the electron moves from point O, where the potential is -30.0 V, to point F,
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
Water flows through a Venturi meter with a pipe diameter of 10.0 cm, The U-tube manometer is partially filled with mercury, Find the flow rate of the water in the pipe
Argon is a monatomic gas whose atomic mass is 39.9 u. The temperature of eight grams of argon is raised by 71 K under conditions of constant pressure. how much heat is required
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