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A sample of helium-4 behaves as an ideal gas as it is heated at constant pressure from 292 K to 402 K. If 19 J of work is done by the gas during this process, what is the mass of helium present?
Unpolarized light passes through a vertical polarizing filter. The light then passes through a horizontal filter, which blocks all of the light; What is the transmitted intensity now
A small particle has charge -2.30\mu C and mass 3.00×10^-4kg . It moves from point A, where the electric potential is V_A = 120V , to point B, What is its speed at point B
Two sound sources driven in phase by the same amplifier are 2.40 m apart on the y axis. What is the wavelength of the sound waves from the sources
ou are traveling on an airplane. The velocity of the plane with respect to the air is 140.0 m/s due east. What is the heading of the plane with respect to the ground
Your 3.90 kg physics book is next to you on the horizontal seat of your car. The coefficient of static friction between the book, What force does the seat exert on the book in this process
A box-shaped wood stove has dimensions of 0.75 m x 1.2 m x 0.40 m an emissivity of 0.80, Calculate its rate of radiation into the surrounding space
A two-slit apparatus is covered with a red (643 nm) filter. When white light is shone on the filter, on the screen beyond the two-slit apparatus, how wide will that diffraction maximum be
Emily has a field with uniformly cut grass of height 2 cm which grows at a constant rate. How long would it sustain each animal alone
An 84 kg skier is being pulled by a boat with a force of 240 N causing the skier to accelerate at 1.4 m/s^2. Find out the drag force on the skier.
A block of mass 4 kg is compressing a spring with K=2500 N/m a distance of 0.3 m. How much work does the spring do on the block
A transformer with a turns ratio (secondary:primary) of 1:80 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit. What is the voltage supplied to the recharger?
The helicopter view in the figure below shows two people pulling on a stubborn mule. What is the single equivalent force magnitude and direction
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