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A water heater warms 35-L (3500 g) of water from a temperature of 22.7 °C to a temperature of 83.7°C. Determine the amount of energy (in joules) required. Specific heat of water is 4.184 J/g°C.
Unpolarized light of intensity 0.75 mw/m2 is incident on the first of two polarizing lenses. The two lenses are oriented 37o apart. Compute the intensity of the light between the two polarizing lenses.
Calculate the number of joules of kinetic energy that a 1 kg parrot has when it flies at 6 m/s. Kinetic Energy: KE = (1/2)mv2
An accelerator produces protons with a velocity 0.9 c at the rate of 3 x 1018 particles per second. Find the energy required to accelerate the particles to this velocity
A parallel-plate capacitor is designed so that the plates can be pulled apart. What is the potential difference between the plates
Use a ray diagram to determine whether the image is real or virtual, upright or inverted, and magnified or reduced
A cylindrical copper rod and an iron rod with exactly the same dimensions are welded together end to end. What is the temperature at the midpoint where the rods are joined together
An automobile battery has an emf of 12.60 V and an internal resistance of 0.084 0 ?. The headlights together have an equivalent resistance of 5.800 ? (assumed constant).
Determine the stopping distances for an automobile with aninitial speed 90 km/h and human reaction tim of 1.0s for anaccerleration a=-4.0 and a=8.0
On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window.
A man slides along a long water slide and then being launched into the air to land in a water pool. Find the magnitude of the velocity at launch
A block with mass m = 1.8-kg attached to the end of a spring undergoes simple harmonic motion on a horizontal frictionless surface. The oscillation period is T = 5.0-s and the oscillation amplitude is A = 12.7-cm. When the spring is unstretched the b..
An experiment to measure the speed of light uses an apparatus similar to Fizeau's. The distance between the light source and the mirror is 10 m, and the wheel has 800 notches. If the wheel rotates at 9000 rev/s when the light from the source is ex..
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