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Recall from thermodynamics that if an object of mass m absorbs an amount of energy Q, its temperature will increase according to Q=mc(Tfinal-Tinitial), where c is th specific heat of the material. A 30g aluminum cup contains 100g of water at 20 degrees C. Energy is added to the water at a rate of 2.00 W for 20 minutes. What is the final temperature of the water
What is the derivative of the transverse unit VECTOR, e(theta in subscript), with respect to time? i.e., de(theta)/dt? Derive the answer using the radial and transverse (polar) coordinate system.
A 0.2 m^3 rigid tank initially contains refrigerant 134a at 1 MPa, saturated vapor. The tank is connected to a supply line that contains refrigerant 134a at 1.2 MPa, 30 degrees C. Refrigerant is allowed to enter the tank until the tank contains sa..
atmospheric pressure as measured by a mercury barometer is 99.0 kPa, a patient is fed by intraveneous feeding. How high is the mercury in the barometer
What is error in the simple pendulum approximation
A man and a woman start at the same location. The man walks North for 30 minutes and travels a distance of 2.2 km, he then walks West for 20 minutes and travels a distance of 1.8 km. What is the woman's average velocity
Mr. Physics drops a rock down a 250-meter deep well. Upon impact with the bottom of the well a short burst of sound is produced with a frequency of 250 Hz. How long after he drops the rock does he hear it hit bottom of the well.
What is the angular acceleration of the wheel? If the wheel was initially at rest and the torque is applied for 15 s, what will be the rotational frequency of the wheel
A plastic light pipe has an index of refraction of 1.42. For total internal reflection, what is the minimum angle of incidence if the pipe is in the following media
Find out distance the two drivers travel
A 1530 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force
An asteroid of mass 2.3×10^5kg , traveling at a speed of 21km/s relative to the Earth, hits the Earth at the equator tangentially, estimate the percent change in the angular speed of the Earth
For the third circuit, consisting of a single battery and two light bulbs in parallel, how does the brightness of the bulbs compare to the first circuit, What is the current through each bulb
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