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Chel

This page lists questions and answers that were posted by visitors named Chel.

Questions

The following questions were asked by visitors named Chel.

What is the specific heat for calorimeter using styrofoam cup?
15 years ago
A thin spherical shell has a radius of 2.4 m and a mass of 410 kg, and its center is located at the origin of a coordinate system. Another spherical shell with a radius of 1 m and mass 135 kg is inside the larger shell with its center at 0.6 m on the x ax...
12 years ago
A block of mass m1 = 3.5 kg sits on a rough, horizontal surface and is connected to a second mass m2 by a light string over a frictionless, massless pulley. The coefficient of kinetic friction between m1 and the surface is 0.41. If the acceleration of the...
9 years ago

Answers

The following answers were posted by visitors named Chel.

No
9 years ago
Plug in the values given from the problem into Q(t) = Q0e^kt (Q(12) = 25, Q0 = 100, t = 12) and then solve for k 25 = 100e^(12k) ln(1/4) = lne^(12k) ln(1/4) = 12k ln(1/4)/12 = k Next, set Q(t) = 50 (since 50 is half of 100) and plug in the previously foun...
3 years ago
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