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1. A body weighs 200 N in air and 125 N when submerged in water. Calculate its specific weight.
2. An object with a volume of 1200 cm3 weighs 20 N. What will it weigh when submerged in water? 3. A body lighter than water requires a force of 20 N to hold it under water. If it weighs 75 N in air, what is its density and specific gravity?
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. What is the magnitude of the lift force acting on the plane
Two objects moving with a speed vtravel in opposite directions in a straight line. The objects stick together when they collide, and move with a speed of v/5 after the collision.
A person who is 1.5 m tall throws a ball horizontally with a speed of 4.2 m/s. What is the speed of the ball the moment before it strikes the ground (in m/s)?
A 392\({\rm g}\) oscillator has a speed of 90.5\({\rm cm/s}\) when its displacement is 3.90\({\rm cm}\)and 74.5\({\rm cm/s}\), What is the oscillator's maximum speed
a platinum sphere with radius 0.0109 m is totally immersed in mercury. find the weight of the sphere the bouyant force
A series combination of a 8 kΩ resistor and an unknown capacitor is connected to a 13 V battery. Determine the capacitance of the capacitor
man 1 was experimenting with friction and attempting to pull man 2 across the surface of a floor. man 1 applies a
In exercise physiology studies, it is sometimes important to determine the location of a person's center of mass. How far from the woman's feet is her center of mass
Find the work done by 2.54 moles of an ideal gas if its volume doubles at a constant temperature of 23.6°C. Find the heat absorbed by the gas
Two boats are heading away from shore. Boat 1 heads due north at a speed of 3.16 m/s relative to the shore, What is the speed of the passenger relative to the shore
Assume the decay constant of radioactive substance C is double the decay constant of radioactive substance D. If substance D has a half-life of 4 hour, determine what is the half-life of substance C
a water pipe having a 2.4 cm inside diameter carries water into the basement of a house at a speed of 0.93 ms and a
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