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A 3.5-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,063oC is placed on top of a 2.5-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC. Assuming no heat is lost to the surrounding container, what is the final temperature of the iron block? (Your answer should be given to the nearest oC.)
Puffy cumulus clouds, which are made of water droplets, occur at lower altitudes in the atmosphere. Wispy cirrus clouds, compute altitude above which wispy cirrus clouds can occur
Astronomers determine that a nearby galaxy is moving toward our galaxy at a speed of 720.0 km/s with respect to the Earth, what was the wavelength emitted by the star
When a mass of 7.15 kg is attached to the spring, the spring stretches by 0.0105 m. Calculate the kinetic energy the mass possesses
For a real train the friction between the car and the track can be described by a friction coefficient, μ. Find out this coefficient assuming that the time it takes for the car to come to rest is 3 s.
If the tension in each chain at the lowest point is 408 N, find the child's speed at the lowest point.
A 2 kg mass passes through the origin (x=0) with initial velocity -3m/s to the left on a horizontal frictionless table, Find the values of x which the mass has zero acceleration
Calculate the magnitude of the electric field at the origin due to the following distribution of charges: -q at (x,y) = (a,a), +q at (a,-a), +q at (-a,-a) and -q at (-a,a)
A resistance R carries a current I = (5 A) sin 120 ?t + (10 A) sin 240 ?t. What is the rms voltage across the resistor
explain the electric flux through the surface of the cube. Calculate the volume charge density of the atmosphere, assuming it to be uniform between 270 and 420 m.
A coin rests 14.60 cm from the center of turntable. The coefficient of static friction between the coin and turntable surface is 0.350. The turntable starts from rest at t = 0 and rotates with the constant angular acceleration of 0.8400 rad/s2.
Which state is best illustrates kinetic friction
how is the graph of the total volume of a bathtub while the water inflow rate follows a seesaw pattern for half of the time and the similar pattern for outflows on the other half.
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