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Q. A body cools from 50 degre celcious to 49 degree celcious in 5 seconds. Hw long will it take to cool from 40 degree celcious to 39 degree celcious? ( Assume temperature of surroundings to be 30 degree clcious and newtons law of cooling is valid)
Q. A 10.0 mu F capacitor initially charged to 30.0 mu C is discharged through a 2.20 kOmega resistor. How long does it take to reduce the capacitor's charge to 5.00 mu C?
The sodium D line is a doublet consisting of two wavelengths, 588.995 and 589.592 nm. Calculate the angular separation between these two lines in the first-order spectrum for a grating with 4000 lines per centimeter. Repeat for the second order.
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
A flight attendant pulls hero 70 N flight bag a distance of 253 m along a level airport floor at a constant velocity. The force she exerts is 40N at an angle of 52.0 degrees above the horizontal.
Get the expression for how moving clocks run slowly when seen by observers at rest.
An object is found to have a weight in air of 500N. It is then tied to a string connected to a balance and immersed in water (density of water is 1000 kg/m3). The scale now reads 450 N. at last the object is immersed in oil and is found to have a ..
What will transform in terms of the observable properties of the black hole as this process continues
A grindstone of radius 4 m is initially spinning with an angular speed of 8 rad/s. The angular speed is then increased to 10 rad/s over the next 4 seconds. Imagine that the angular acceleration is constant.
A 1.00 kg glider on a horizontal air track is pulled by a string at an angle θ. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg .
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice will be formed from 0°C water.
What is effectiveness of battery as an energy storage device
What is moment of inertia
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