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A 1.3-kg block of ice is initially at a temperature of -6.0%u2218C. If 3.0*10^5 J of heat are added,
A) what is the final temperature?
B) Find the amount of ice, if any, that remains.
Sally travels by car from one city to another. She drives for 30.0 min at 69.0 km/h, 37.0 min at 34 km/h, and 54min at 74.0 km/h and she spends 13.0 min eating lunch and buying gas.
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.13 m2, what is the percentage lost by the window
A 2kg ball moving east with a speed of 3m/s collides with another 3kg ball moving west with a speed of 4m/s . After the collision the two balls stick together
A box is pushed across the floor, slide with a constant velocity, and is opposed by a friction force of 25N. What is the magnitude of the force? Choose the correct answer. A.Less than 25N B.Zero C.Greater than 25N D.25n
A 1x10^2-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.25. What must be the magnitude of, so that the net work completed by it and the kine..
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k, what is the temperature of the hot reservoir
during a racing event a 110 kg car accelerates from 0 to 29 m/s in 4.3 seconds. what is the net force exerted on the car
First discuss how energy can be converted from one form to another, giving specific examples. Define what we mean
What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train.
A spherical shell has an outside radius of 2.6cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.70g/ cm3. The space inside the shell is filled with a liquid having a density of 1.23g/cm3.
A cannonball shot with the initial velocity of 129 m/s at an angle of 36° follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is the cannonball going as it hits the balloon.
An infinite line of positive charge lies along the y axis, with charge density ? = 1.60 ?C/m. Find the magnitude of the net torque exerted on the dipole
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