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a rectangular air mattress is 2.0 m long, 0.50 m wide, and0.08 m thick. If it has a mass of 2.0 kg, what additional mass can it support in water?
Two simple pendulums have length of 81-cm and 64-cm they are released from the same angular position at the same instant. After how much time would they both arrive at their initial position simultaneously.
A rock is suspended by a light string. When the rock is in air, the tension in the string is 39.1 N. What is the density of the unknown liquid
The specific heat of lead is .030 cal/g x degrees C. 300 grams of lead shot at 100 celcius is mixed with 100 grams of water at 70 degrees celcius in an insulated container. the final temperature of the mixture is what? Detailed solution gets lifes..
q1. a boat with a flat bottom and its cargo weigh 6000n. the area of the boats bottom is 4m squared. how far below the
A model rocket fired vertically from the ground ascends with a vertical acceleration of 4.0 m/s2 for 5.8 s, What is the maximum altitude reached
A 5.29-kg ball hangs from the top of a vertical pole by a 2.09-m-long string. Calculate the angle, between 0° and 90°, that the string makes with the pole
A man pushes a lawn mower on a level lawn with a force of 200N. If 40% of this force is directed downward, then how much work is done by the man
An ideal monatomic gas is held in a well insulated container with a piston, so that no heat is transferred to and from it. There are 1.75 moles of gas in the container initially at a pressure 1.01x 10^5 Pa. During a process, the temperature of the ga..
A circular coil 18.0cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.50×10?5T, Determine the torque on the coil
A 300 lb bungee jumper wants to jump from the top of a 230 ft high bridge and be able to just touch the water below. what should the bungee cord's relaxed length, l, be for this jump
THe Voyager one has a 20-W radio transmitter and is expected to transmit to 2025 when it is 25 billion km from the earth. WHat's the Diameter of a dish antenna
Two parallel metal rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 102.0 ?. What is the maximum speed of the bar
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