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Water at the top of Niagara Fallshas a temperature of 8.0°C. If itfalls a distance of 70.0 m and all ofits potential energy goes into heating the water, calculate the increase in temperature of the water at the bottomof the falls.
°C
A laser beam shines onto a slit of width 0.1 mm and the diffraction pattern is projected onto a screen 2 m from the slit. what is the wavelength of the laser beam
An automobile fuel tank is filled to the brim with 56.0 liters (14.9 gallon) of gasoline at 11.5 deg C. How much gasoline (in Liter) overflows from the tank as a result of the expansion
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, What is the distance between the two aircraft
You measure the activity of a radioactive sample, then wait a few days and measure it again. What is the half-life of the substance
A dielectric-filled parallel-plate capacitor has plate area = 10.0mm , plate separation = 10.0mm and dielectric constant = 3.00. Find the energy of the dielectric-filled capacitor
A brick has a mass of 1.10 kg. What is the brick's weight at the surface of the Earth, What is the mass of the bucket and water
Because of salt content, the density of the water in the Dead Sea (Middle East) is greater than ocean water. Air pressure (at sea level) is 1.013 x 105 Pa. Calculate the density of the water in the Dead Sea in kg/m3. g = 9.8 m/s2
A spaceship and an asteroid are moving in the same direction away from Earth with speeds of 0.76c, What is the relative speed between the spaceship and the asteroid
The blade on a table saw spins at 3450 rpm. Its diameter is 25 cm. What is the speed of a tooth on the edge of the blade
the coefficient of static friction between the tires of a car and the street is 0.77. what is the sttepest angle on which the car can be parked without slipping
A jeweller working with a heated 44 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 94 degrees Celsius, what mass of water at 25 degrees Celsius is necessary to lower the ring's temperature to 35 d..
A wheel (radius = 14 cm) is mounted on a frictionless, horizontal axle that is perpendicular to the wheel and passes through the center of mass of the wheel, find the moment of inertia (of the wheel) about the given axle
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