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Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. In a standard treatment, 2.0 kg of beef receives 4.5 kGy of radiation in 48 s. (A) How much energy is deposited in the beef in kJ? (B) What is the average rate (in W) of energy deposition in the beef? (C) Estimate the temperature increase of the beef due to this procedure. The specific heat of beef is approximately 0.73 of that of water.
A supertrain of proper length 205 m travels at a speed of 0.87c as it passes through a tunnel having proper length 74 m. How much longer is the tunnel
Three resistors are connected in series across a 11-V power supply. what is the exact potential drop (in volts) across resistor 3
A parallel-plate air capacitor has a capacitance of 940 pF. The charge on each plate is 2.10 µC. How much work is required to double the separation
How to solve this problem: A 10 cm long animal tendon was found to stretch 3.8 mm by a force of 13.7 N. What is the elastic modulus of this tendon
A 194 N force is needed to slide a box across a flat surface at a constant velocity. What is the coefficient of kinetic friction between the box and the floor. (Use g = 9.8 m/s2.)
An open train car, with a mass of 2010 kg, coasts along a horizontal track at the speed 2.73 m/s. evaluate the car\'s speed after the loading is completed
A diffraction grating has 4272 lines/cm. Calculate the width of the dark area between the first and second order spectra on a screen 3.3 m away
A box that weighs 300 N is pulled across a level surface with a constant velocity. What is the normal force of the floor on the box
Sarah and her bicycle have a total mass of 40 kg. Her speed at the top of a 10 m high and 100 m long hill is 5 m/s. at what speed will she be going when she reaches the bottom
Two 4.0 cm × 4.0 cm electrodes spaced 2.0 mm apart form a parallel-plate capacitor. What is the charge on each electrode
Assume you weigh 160 lbs on earth. How far away from earth's surface would you have to go so that your weight dropped to 40 lbs
question1calculate approximately the average power of a water wave when it hits chest of an adult standing in the water
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