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An aluminum cup contains 225 g ofwater and a 40 g copper stirrer, all at 27°C. A 480 g sample of silver at an initial temperatureof 86°C is placed in the water.The stirrer is used to stir the mixture gently until it reaches itsfinal equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
g
In the measurement of length of a cylinder, the main scale reading of a vernier caliper is 1.5 cm, Find the reading of the length of the cylinder
A patient with thyroid problems has radioactive iodine (123I53) deposited in his thyroid gland. If the 123I53 has an initial activity of 2.5 MBq, what is its activity after 24 days
A copper wire, whose cross-sectional area is 5.22 x 10-6 m2, has a linear density of 5.86 x 10-3 kg/m and is strung between two walls. At the ambient temperature, a transverse wave travels with a speed of 43.1 m/s on this wire. The coefficient of ..
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
A coil with 41 turns of wire is wrapped on a frame with a square cross-section 1.85 cm on a side. Find the magnitude of the induced current in the coil while the field is changing
A helicopter is lifting two crates simultaneously. One crate with a mass of 160 kg is attached to the helicopter by cable A. The second crate with a mass of 73 kg is hanging below the first crate and attached to the first crate by cable B. As the hel..
Residents of Hawaii are warned of the approach of a tsunami (tidal wave) by sirens mounted on the top of towers. Treating the siren as a point source of sound, and ignoring reflections and absorption, find the intensity level of one siren heard by a..
A wire is made by attaching two segments together, end to end. One segment is made of aluminum and the other is steel. What fraction of the length is aluminum
A mass-spring system oscillates with an amplitude of 4.40 cm. If the spring constant is 237 N/m and the mass is 411 g, Determine the maximum speed of the object
Consider a 2.4 kg object sliding along a horizontal frictionless surface at 5.2 m/s. Find initial and final elastic potential energies
A boy whirls a stonein a horizontal circle 1.6 m above the ground, by means of a string1.4 m long. The angle between the string and horizontal plane is 10degrees. The string breaks,the stone flies of horizontally, and strikes the ground 6 m away.What..
a cylindrical wheel is rotating with a constant angular acceleration of 4.0 rad/s^2. At the instant it reaches an angular speed of 2.0 rad/s, What is the radius of the wheel
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