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If you put 200 grams of aluminum at 50ºC into a container with 100 grams of water at 20ºC and seal the container so no heat escapes then (A refers to aluminum and W to water).
a) The final temperature is given by (mA) (cA) (TA-Tf)=(mW) (cW) (Tf-TW)
b) The final temperature is given by (mA) (cA) (TA-Tf)=(mW) (cW) (TW-Tf)
c) The final temperature is given by (TA-Tf)=(Tf-TW)
d) The final temperature is given by (TA-Tf)=(TW-Tf)
e) There is not enough information to find the final temperature
Batman throws a bat grenade at an angle of 44 degrees to the horizontal with a speed of 17.80 meters per second. How far does it travel.
suppose that the springs have somehow not yet compressed to their maximum amount. How much are the springs compressed.
when points charges q1 8.4muc and q2 5.6muc are brought near each other each experience a repulsive force of
Use Gauss' law to determine the magnitude of the electric field intensity at point r units away from an infinitely on thin wire carrying a charge λ unit per length. (Consider a cylinder of length L and radius r concentric with the wire.)
In a double-slit experiment, light with a wavelength of 500 nm forms an interference pattern 1.5 m away from a screen. The m=2 bright fringe is observed to be .0050 m from the central maximum. What is the seperation of the two slits?
A mass m travels at speed 3c/5, and another mass m sits at rest. a) Find the energy and momentum of the two particles in the lab frame. b) Find the speed of the CM of the system,
If the string is fixed at a length of 28 m we find a third harmonic standingwave.a)What is the tension in the string?b) How long would the string need to be to find the second harmonic standing wave?
Determine the energy levels of positronium "atom" consisting of a positron (antielectron charge +e) and an electron rotating about their common center of mass
About how old are the oldest rocks found on Earth? On the Moon? Briefly, how can the absolute age of a sedimentary rock be determined? In what era do you live? What period? What epoch?
Bone has a Young's modulus of about 1.80*1010 Pa. Under compression, it can withstand a stress of about 1.55*108 Pa before breaking. Suppose that a femur (thigh-bone) is 0.44 m long, and Compute the amount of compression this bone can withstand befor..
How would you describe the "use of Newton's gravity to hold the solar system together" to an elementary school child? Give some examples and situations that you might find helpful in describing gravity.
A series RLC circuit has components with the following values: L = 18.0 mH, C = 90.0 nF, R = 10.0 ?, and ?Vmax = 100 V, with ?v = ?Vmax sin ?t. Find the resonant frequency of the circuit
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