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An aluminum ice tray is filled with 200 gram of water. The mass of the tray is 340 gram, and both ice and tray are at 18oC. Find how much heat must be removed from this system to convert the water to ice cubes at -15oC?
Many years ago the Federal Communications Commission (FCC) assigned Microwave Ovens two different operational frequencies. Some of the very old microwave ovens used a frequency of 915 MHz rather than the current 2450 MHz that is almost exclusively..
a 240 g piece of ice at 0degc is placed in 510 g of water at 23degc. the system is in a container of negligible heat
The average nascar car weights 3,400lbs. at a recent nascar racethe cars went flying around the banked curces at daytonainternational raceway. What is the centripetal force on the car keeping it goingaround the curve at a speed of 200 mph
Calculate the temperature at which a tungsten filament that has an emissivity of 0.50 and a surface area of 3.9 10-5 m2 will radiate energy at the rate of 35 W in a room
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
Assume that at a point x the wind from the surface to z= 1 kmis westerly at 10 m/s, What is the vertical velocity at a height of1 km
A very large tank contains the gas ethane. The pressure of ethaneis 2.14 x 104 Pa. Find the translational rms speed of the ethane molecules
A fisherman is fishing from a bridge and is using a "33N testline." In other words, the line will sustain a maximum force of33.0 N without breaking.
q1. a jetliner is moving at a speed of 274 ms. the vertical component of the planes velocity is 54.0 ms. conclude the
A glass lens has a scratch-resistant plastic coating on it. The speed of light in the glass is 0.659c, At what angle with respect to the normal is the ray transmitted
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. Calculate the probable percent error in the volume
A 54 kg person is parachuting and experiencing a downward acceleration of 2.0 m/s2. The mass of the parachute is 7.6 kg. (a) What is the upward force on the open parachute from the air? (b) What is the magnitude of the downward force on the parachute..
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