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An air-filled parallel-plate capacitor has a capacitance of 1.4 pF. The separation of the plates is doubled and wax is inserted among them. The new capacitance is 2.1 pF. Discover the dielectric constant of the wax.
An ideal gas occupies a volumeof 2.0 cm3 at 20°C andatmospheric pressure. Determine the number of molecules of gas inthe container
Light strikes a cube with index of refraction (2) at an angle of 30 deg. At what angle will the light exit the cube
A horseshoe (mass= 0.50 kg), which has just been forged, is dropped into 2.7L of water in a 0.45kg iron pot initially at 22 C. estimate the initial temperature of the hot horseshoe
a spherical balloon expands when it is taken from the cold outdoors to the inside of a warm house. if the surface area
A box with a mass of 3:5kg slides of a ramp 8 mhigh, thenwhen traveling on horizontal surface collides with a box with mass 5 kg, find the velocity of the boxes after the collision
A tank holds a layer of oil, 1.58 m thick, which floats on a layer of syrup that is 0.66 m thick. Both liquids are clear and do not intermix. A ray, The index of refraction of the syrup is closest to:
question 1. draw a picture of a moving source and the waves surrounding it according to what you observed in this
On a dry day, just after washing your hair to remove natural oils and drying it thoroughly, run a plastic comb through it. Small bits of paper will be attracted to the comb. Explain why.
Shaving/makeup mirrors typically have one flat and one concave (magnifying) surface. What is the focal length of the mirror
You push your book 1.90 m along a horizontal table top with a horizontal force of 2.00 Newton. The opposing force of friction is 0.601 Newton. Compute the work done on the book by the friction force
Threshold freq. of metal isf0. When the light of freq. 2f0 is incident on the metal max velocity of electrons is v1 and v2
Explain how much work is used to raise A to height h? What happens to the kinetic energy of B if its speed is doubled?
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