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You put 1kg of water at 1 degree Celsius together with 0.5kg of steam at 100 degrees Celsius, what will the final temperature be after the two reach equilibrium? Given: Lf= 334 kJ/kg, C of water=4.184 kJ/(kg*K), Lv= 2257 kJ/kg.
question1an automobile having a mass of 1000 kg is driven into a brick wall in a safety test. the bumper behaves like a
Determine the minimum velocity and angle required to shoot a projectile over a wall and land 14ft from origin. The wall is located 10ft from origin and is 26.5ft high and 0.5ft wide.
A man stands on a frictionless platform that is rotating with an angular speed of 3.3 rad/s; his arms are outstretched and he holds a weight in each hand. find the change of the kinetic energy when the man moves his arms
A 8kg block is attached to a light rope that passes over a uniform disk-shaped 4kg pully of radius 0.6m without slipping. On the other side of the puly the rope is attached to a light unstreched spring with a stiffness
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
Suppose a flat roof has a surface area of 1.18000×102 m2. Presume the air inside the building (and under the roof) is at atmospheric pressure, 1.01325×105 Pa, What is the force with which the air inside the house pushes the roof upward
Suppose a 64.0 kg boy and a 48 kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
A helicopter of mass 3770 kg can create an upward lift forceF. When empty, it can accelerate straight upward at amaximum of 1.37 m/s2. What is the mass of the cargo
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. What distance did the dog run
The four strings pass over the bridge of a violin, as shown below. The strings make and angle of 72.0° with the normal to the plane of the instrument on either side of the bridge. determine the force pulling the segment back to its equilibrium posi..
Two round rods, one steel and the other copper, are joined end to end. Each rod is 0.760 long and 1.35 in diameter, For the steel rod, what is the elongation
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 88.2% of the initial activity. What is the half-life of this material
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