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A refrigerator operates in a cyclic and reversible manner between 0 °C and 27°C. Calculatea. work done to freeze 1 L of waterb. coefficient of performance, given that the heat of fusion of water is 334.72 Jg-1.
A person runs around a circular track of radius of 111 meter at a constant linear speed of 3 meter per second. Calculate the person angular velocity
The plates of a spherical capacitor have radii 43.7 mm and 45.5 mm. Calculate the capacitance in picofarads
An ideal gas is compressed at constant pressure to one-half its initial volume. find the initial volume of the gas
A bat crashes into the vertical front of an accelerating subway train. what is the minimum acceleration of the train
A hot-air balloon plus cargo has a mass of 1890 kg and a volume of 12030 m3. The balloon is floating at a constant height of 6.25 m above the ground. What is the density of the hot air in the balloon
a canoeist wants to paddle to an island which located 38m north and 100m east of him. he finds that by pointing his
12.0g of aluminum at 200C and 20.0g of copper are dropped into 51.0cm^3 of ethyl alcohol at 15C. What is the initial Temp of Copper
A singly charged positive ion has a mass of 3.20 multiplied by 10-26 kg. After being accelerated from rest through a potential dissimilarity of 808 V, the ion enters a magnetic field of 0.860 T along a direction perpendicular to the direction of the ..
Suppose a simple pendulum is used to measure the acceleration due to gravity at various points on the Earth. find the corresponding variation in the period of the pendulum
a 5.00-kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. the object is set into
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
A non conducting thin spherical shell of radius 6.36 cm has a uniform surface charge density of 8.23 nC/m2. What is the total charge on the shell?
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