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The two blocks shown are connected by a light string that passes over a light pulley. The block on the table has a mass of m and the hanging mass has a mass of 3m. If the coefficient of kinetic friction between the blocks and the table is 0.10, what is the magnitude of the hanging block's acceleration? (Assume the blocks are already in motion)
Find the net rate of radiation by a pot at 45.1°C that has been placed in a -24.1°C freezer. The pot\'s surface area is 0.117 m2 and its emissivity is 0.635
What frequency is heard by an observer who hears the 450-Hz siren on a police car traveling at 35 m/s away from her
A cylinder (with circular ends) and a hemisphere are solidthroughout and made from the same material. What is the radius of the hemisphere
An electric clothes dryer has a heating element with a resistance of 9.6 ?.
A rocket moves upward, starting from rest with an acceleration of 32.0 m/s2 for 4.32 s. How high does it rise above the ground
Show that for viscous damping, the loss factor ? is independent of the amplitude and proportional to the frequency.
A block of mass m sliding on a frictionless table isattached to a string that passes through a narrow hole through thecenter of the table. Find the angular momentum of the block
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. What is the distance d from image to screen
A 1.7nF parallel-plate capacitor has an air gap among its plates. Its capacitance increases by 3.0nF when the gap is full by a dielectric. What is the dielectric constant of that dielectric?
A runner whose mass is 55 kg accelerates from a stop to a speed of 8 m/s in 3 seconds. How much work is done on the point-particle system by this force
Positively charged aluminum ion, Al3+, has a mass of 4:50 1026 kg. After being accelerated through a potential dierence of 650 V, the ion enters a magnetic eld of 0.500 T, in a direction perpendicular to the eld. Calculate the radius of the path o..
an astronaut is performing a space walk outside the international space station. the total mass of the astronaut with
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