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Does the velocity of the particles of fluid at rest changes in downward direction due to gravitational force? Why it changes or not changes? For finding pressure for fluid at rest the formula is p=hdg. Why we not take the average of two accelerations, the acceleration of particles of fluid instead of acceleration due to gravity? Why?
A gas is compressed at a constant pressure of 0.320 atm from a volume of 8.00 L to 5.00 L. In the process, 400 J of heat energy flows out of the gas. What is the work done by the gas
An old campfire is uncovered during an archaeological dig. Its charcoal is found to contain less than 1/950 the normal amount of 14C. Obtain the minimum age of the charcoal
Suppose a formula for gain in heat energy of an object is H = m(A - B), where m = mass and (A - B) is its rise in temperature between A degrees and B degrees (as in #4). Write an expression for the absolute uncertainty, delta-H, in terms of m, del..
A police officer spots a speeding car traveling at 20 m/s (approximately 44 mph) as it passes. How far will the officer have to drive before catching up to the speeding car
once upon a time a famous zoologist was hunting antelope for a zoo with a dart gun that fired darts with a range of 100
Suppose 2.50 kg of 32 degrees C water is mixed with 9.30 kg of 65 degrees C water. If no heat is lost in this system, what is the final temperature of the water
A helium weather balloon is used to lift a meteorological sensor package high up into the atmosphere. Calculate the number of moles of helium in the balloon
A rectanglar block of iron 9.68x10^-8 ohms has dimensions 1.20 X 1.60 X 2.50 cm, What is the minimum resistance of the block
An alkaline D-cell has a voltage of 1.4V and is rated as 11,000mAh. Find the total charge available from the battery
1 a small steel ball bearing with a mass of 20.0 g is on a short compressed spring. when aimed vertically and suddenly
A box weighing 52 Newton slide across the floor, the floor exerts a friction force of 17 Newton on the box. Find coefficient of kinetic friction between floor and box
A beaker has a height of 15.0 cm. The lower half of the beaker is filled with water, and the upper half is filled with oil (n = 1.48). what is the apparent depth of the bottom
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