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A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 1.8 meters long and 0.9 meters high. A 4 kg block is released at the top of the ramp and slides down onto a frictionless horizontal surface where it hits and sticks to another block that has a mass of 5 kg. After the blocks travel some distance, the blocks come to a rough patch that has a coefficient of friction of 0.20 between the blocks and the rough surface. How far along the rough patch do the blocks go before stopping?
Suppose a star experiences an outburst in which its surface temperature doubles but its average density, By what factors do the star's radius and luminosity change
The most abundant isotope of lithium, Li-7, contains three protons and four neutrons and has a mass of 7.01600 u. What is the mass defect for this nucleus in atomic mass units
A 100.0 pF capacitor consists of two circular plates of radius .4 mm. How far apart are the plates
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.703 A) sin [(257 rad/s)t]. Determine the resistance of the bulb's filament
What centripetal force does an 80-kg passenger experience when seated 12 m from the center of the Ferris wheel whose angular speed is 0.50 rad/s.
Consider a circuit consisting of a lightbulb and a capacitor. Part A:If the frequency of the generator is increased, does the intensity of the lightbulb increase, decrease, or stay the same? Part B:Choose the bestexplanation from among the following:
When you irradiate a metal with light of wavelength 425 nm in an investigation of the photoelectric effect, Find the work function of the irradiated metal
A certain atom has atomic number Z = 21 and atomic mass number A = 44. How many protons and neutrons are in the nucleus
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
question1a 69 kg boy and a 45 kg girl apply an elastic rope at the same time as engaged in a tug-of-war on an icy
A student on a piano stool rotates freely with an angular speed of 3.05 rev/s. Calculate the initial kinetic energy of the system
A stone used to grind wheat into flour is turned through 12 revolutions by a constant force of 21.6 N applied to the rim of a 9.2-cm-radius shaft connected to the wheel
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