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A subway train starts from rest at a statrion and accelerates at a rate of 1.65m/s^2 for 14.2s. It runs at constant speed for 69.4s and slows down at a rate of 3.5m/s^2 until it stops at the next station. Find the total distance covered.
A sample of isotope of 131 Iodine (half-life of 8.04 days) has activity of 5.8 mCi at the time of shipment. How much time has elapsed between the two measurements
A 2.0 kg canister is moving in the positive x direction with an initial velocity of 4.0 m/s, How fast will the canstier be moving as a result of this force
A point on the rim of a 0.55 m diameter grinding wheel changes speed uniformly from 12 m/s to 20 m/s in 8.3 s. What is the average angular acceleration of the wheel
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.703 A) sin [(257 rad/s)t]. Determine the resistance of the bulb's filament
a sound wave with a frequenc of 512 hz and a wavelenth of 2.99 m is directed toward the bottom of a lake to measure its
Two resistors, 61.1 and 83.6 , are connected in parallel. The current through the 83.6 - resistor is 4.29 A. What is the total power supplied to the two resistors
What capacitance must be used in this circuit if the time constant is to be 3.4 ms.
Three identical metal spheres are charged so that sphere A has a charge of 220 ?C, sphere B has a charge of -370 ?C, What is the final charge on each sphere
Astronomers have observed a planet orbiting a near-by star. Through close observation, What is the velocity at apogee, in km/s, for the planet
A 1meter long rod has a circular cross-section with an area of 2 m^2, How far from the left end is the center of mass of the rod
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. How many electrons pass through the wires connected to the patient
A large tank is filled with methane gas at a concentration of 0.690 kg/m3 The valve of a 1.37-m pipe connecting the tank to the atmosphere is inadvertently left open for eleven hours. What is the cross-sectional area of the pipe
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