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An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 3.1 m/s2. The magnitude of the car's velocity at the end of stage 2 is 2.8 times greater than it is at the end of stage 1. Find the magnitude of the acceleration in stage 2.
A railroad train is traveling at 30 m/s. The locomotive whistle emits a loud tone at frequency 440 Hz. what is the frequency of the sound heard by a stationary listener in front of the locomotive
Moist air with dry and wet bulb temperatures of 20oC and 9oC respectively enters a steam-spray humidifyer at rate of 100 kg of dry air/min. Saturated water vapor at 110oC is injected at 1 kg/min.
What is the largest slit width for which there are no minima when the wavelength of the incident light on the single slit is436nm?
A lead bullet with a mass of 0.03 kg traveling at 187 m/s strikes an armor plate and comes to a stop. what is the temperature change
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the car's horn
A 10-m long plank with a mass of 15-kg is supported at each. A 70 kg person stands on the plank between the supports. how far is the person standing from the left support
If 40.7 kW is to be transmitted to consumers over two 0.107 %u2126 lines, estimate how much power is saved if the voltage is stepped up from 115 V to 1150 V
A Block A block in the shape of a rectangularsolid has a cross-sectional area of 4.00cm2 across its width, a front-to-rear length of15.1 cm, and a resistance of 925 . Thematerial of which the block is made has 5.33 multiplied by 1022 conduction el..
A capacitor with its plates separated by paper stores 4.8 of charge when it is connected to a particular battery. An otherwise identical capacitor, How much charge does that capacitor store
Consider an airplane of wing area 6.8 m^2 (both wings combined) flying through air of density 1.13 kg/m^3. What is the net upward lift force on the plane
Emilie's potter's wheel rotates with a constant 2.20 angular acceleration. After 3.50 , the wheel has rotated through an angle of 80.0 . What was the angular velocity of the wheel at the beginning of the 3.50 interval?
a solid aluminum ingot weighs 71.0 n in air. a. what is its volume? b. the ingot is suspended from a rope and totally
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