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A wooden board that is 50 cm long, 20 cm long, and 4 cm thick is floating in water. Rocks are then carefully placed on the top face of the board until the top of the wood just slips below the water surface. The density of water is 1000 kg/m^3 and the density of the wood is 600 kg/m^3. What is the total mass of the rocks?
Only two forces act on an object (mass = 4.60 kg). (F = 68.0 N.) Determine the magnitude and direction (relative to the x axis) of the acceleration of the object.
Three children each of weight 356N make a long raft by lashing together logs of diameter 0.30m and length 1.8m. how many logs will be needed to keep them afloat in fresh water. take density of the logs to be 800kg/m^3.
A sealed tank containing seawater to a height of 11.1 also contains air above the water at a gauge pressure of 2.95. Water flows out from the bottom through a small hole.
What is the greatest possible distance from the wall
find the force exerted by the rope on the bucket. A metallic object is given the negative charge by the process of induction. What happens to object's mass.
while the airport sends out a rescue crew, how far will the crew have to fly to reach the aircraft if they fly in a straight line from Galisto?
A step-up transformer has 300 turns on its primary coil and 90000 turns on its secondary coil if the current flowing through the secondary is 5 amps what is the current flowing in the primary.
Find out the magnitude of the amount by which the potential difference across the plates changes.
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
A curve of radius 40 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely create the curve?
The acceleration due to gravity on the surface of the moon is about g/ 6. If a pendulum has a period T on earth what will its period be on the moon?
An object has a kinetic energy of 257J and a momentum of magnitude 21.8 kg·m/s. Find out the speed and the mass of the object.
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