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A sample of silver at 20.0°C is warmed to 100.0°C when 896 cal is added. What is the mass of the silver? (csilver = 0.056 kcal/kgC°)
ANSWER: . g (three significant figures)
two identical spaceships are traveling in the same direction. an observer on earth measures the first to have a speed
Find the angular velocity of a clock's second hand and the linear speed and linear acceleration of a point on the second hand 2.37 cm from the rotation axis
A 58 kW radio station broadcasts its signal uniformly in all directions. What is the average intensity of its signal at a distance of 290 m from the antenna
The objective lens in a microscope with a 25.0 cm long tube has a magnification of -50.0 and the eyepiece has a magnification of20.0. What is the focal length of the objective
question a 1055 kg van stopped at a traffic light is hit directly in the rear by a 800 kg car traveling with a velocity
What would be the composition of the liquid phase and the gas phase in equilibrium at 363 K and 1:013 × 105 Pa? At 363 K, the vapor pressure of benzene is 1:344 × 105 Pa and the vapor pressure of toluene is 5:38 × 105 Pa.
A Mass-Spring-Damper system is tested to determine the value of the viscous damping coefficient c. Assume k =150 N/m and m = 30 kg. The vibrational amplitude is observed to decrease to 33% of its initial value after two consecutive cycles. What is..
A battery with an emf of 12 V and an internal resistance of 1Ω is used to charge a battery with an emf of 10 V and an internal resistance of 1 Ω. Discover the current in the circuit.
Two uniform infinite sheets of electric charge densities 17.0 C/m2 and %u201317.0 C/m2 intersect at a right angle. Find the magnitude of the electric field everywhere
two parallel plates are .005m apart and are each 2m2 in area. the plate are in vacuum and an electric potential
a spring is hanging vertically from a ceiling. assume the springs mass is negligible. i hang a 0.5kg mass on the spring
In the illustration above, two glass plates have a very slight angle between them because a speck of dust props up one edge of the top plate. When illuminated from above with light of wavelength 546 nm, eleven dark interference fringes are observ..
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