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A picture window has dimensions of 1.40m x 2.50m and is made of glass 5.20mm thick. On a winter day, the outside temperature is -15.0 degrees C , while the inside temperature is a comfortable 21.0 degrees C .
A. At what rate is heat being lost through the window by conduction?
B. At what rate would heat be lost through the window if you covered it with a 0.750 -thick layer of paper (thermal conductivity 0.0500 )?
A 180g air-track glider is attached to a spring. The glider is pushed in 12.4cm and released. A student with a stopwatch finds that 12.0 oscillations take 12.5s . What is the spring constant?
A cell has a 7.0-nm-thick membrane with a total membrane area of 6.0\times10^{-9}\;{\rm m^2}, How many sodium ions does this charge correspond to
two identical hollow cylindrical neodymium iron boron ndfeb magnets are placed on a nonmagnetic post so that one is
q1. a 97 kg man drops from rest on a diving board -2.8 m above the surface of water and comes to rest 0.68 s after
Three point charges Q1 = 2.2 mu or micro C, Q2 = 4.2 mu or micro C and Q3 = 3.2 mu or micro C, are arranged as shown
You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 1.96 N. What is the linear mass density of the string
When a mass of 7.15 kg is attached to the spring, the spring stretches by 0.0105 m. Calculate the kinetic energy the mass possesses
Light is incident on a piece of flint glass (n=1.66) from the air in such a way that the angle of refraction is exactly half the angle of incidence. What are the values of the angles of incidence
An airtight box has a removable lid of area 1.60 10-2 m2 and negligible weight. What is the magnitude of the force required to pull the lid off the box
you need to use a monitor and lightweight cable to lift a 2.0 kg copper weight to a height of 3m. To do so, you've decided to use a 1000V power supply to charge a capacitor, what minimum capacitance do you need
Which of the following best describe Lenz's Law?
A 0.495-kg mass is attached to a horizontal spring with k = 105 N/m. The mass slides across a frictionless surface. Find the mechanical energy of the system
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