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The ends of a thin bar are maintained at dissimilar temperatures. The temperature of the cooler end is 14°C, while the temperature at a point0.12 m from the cooler end is 23°C and the temperature of the warmer end is 43°C. Assuming that heat flows merely along the length of the bar (the sides are insulated), discover the length of the bar.
To determine the specific heat of an object, a student heats it to 100 in boiling water. She then places the 68.5 object in a 196 aluminum calorimeter containing 135 of water. what is the specific heat of the object
A uniform 1.80m ladder of mass 6.30kg is leaning against a vertical wall while making an angle of 53.0%u2218 with the floor. How much work did this person do against gravity
A pendulum oscillating on the moon has the same period as a(n) 3.14 m pendulum oscillating on Earth. find the length of the pendulum on the moon
A refrigerator does 18 kj of work while moving 115 kg of thermal energy from inside the refrigerator. What is its coefficient of performance
the eye of a hurricane passes over grand bahama island in a direction 60.0deg north of west with a speed of 38.0 kmh.
A startled armadillo leaps upward rising 0.550 m in the first 0.203 is. (a) What is its initial speed as it leaves the ground? m/s (b) What is its speed at the height of 0.550 m? m/s (c) How much higher does it go?
A 0.280 kg croquet ball makes an elastic head-on collision with asecond ball initially at rest. The second ball moves off with halfthe original speed of the first ball. What is the mass of thesecond ball
A particular guitar string is supposed to vibrate at 206 Hz, but itis measured to actually vibrate at 210 Hz. By what percent should the tension in the string be changed to get the frequency to the correct value?
A car uniformly decelerates at a rate of -5.00 m/s^2. How far does the car travel after 1.5 seconds if it initially was moving at a speed of 25 m/s
A negative charge -0.550 µC exerts an upward 0.700 N force on an unknown charge 0.280 m directly below it. What is the unknown charge (magnitude and sign)? What are the magnitude and direction of the force that the unknown charge exerts on the -0.550..
A solenoid that is 86.0 cm long has a cross-sectional area of 20.0 cm2. There are 860 turns of wire carrying a current of 6.60 A. Find the total energy stored in the magnetic field there (neglect end effects)
The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.0cm. The pulley is free to turn on a fixed smooth axle. The vertical section of the string supports a 400 g object. The string does not slip at its conta..
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