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You're driving down the highway late one night at 20 m/s when a deer steps onto the road 49 m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 10m/s^2. How much distance is between you and the deer when you come to a stop? What is the maximum speed you could have reached and still not hit the deer?
Diagnostic ultrasound of frequency 3.03 MHz is used to examine tumors in soft tissue. (a) What is the wavelength in air of such a sound wave? (b) If the speed of sound in tissue is 1340 m/s, what is the wavelength of this wave in tissue? (Take the sp..
There are two identical, positively charged conducting spheres fixed in space. The spheres are 45.4 cm apart, find the initial charge on each sphere
A 1.0 mW HeNe laser with wavelenght 633 nm is shown on a metal. The photocurrent is reduced to zero with stopping potential of 0.50 volts, What is the work function of the metal and what is the cutoff wavelength
A fire hose 4 cm in diameter is capable of spraying water at a velocity of 20 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose
q1. in accordance to one estimate the first atomic bomb released an energy equivalent to 20 kilotons of tnt. if 1 ton
A uniform bar is 5.00 m long and weighs 975 N. A weight of 255 N is attached to one end while a weight of 375 N is attached 1.50 m from the other end. Find the tension in the cable
A tank contains 10.3 g of chlorine gas (Cl2) at a temperature of 79 °C and an absolute pressure of 5.16 105 Pa. How many grams of chlorine gas have leaked out of the tank
A loop of diameter d=12 cm, carrying a current I = 0.40 A is placed inside a magnetic field B=(02.0 T)i + (0.40 T)j. Calculate the potential energy of the loop
A diffraction grating with 220 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle will the second order peak occur
The brakes of a truck cause it to slow down by applying a retarding force of 4060 N to the truck over a distance of 1150 m
An ice machine converts 10 degree celsius water to 0 degree celsius ice. The ice machine has a COP of 3 and consumes elec
A VW Beetle goes from 0 to 60 mi/hr with an acceleration of +2.35 m/s2. Find the acceleration (in m/s2) of the dragster
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