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A racquetball strikes a wall with a speed of 3 m/s and rebounds in the opposite direction with a speed of 26 m/s. The collision takes 20ms. What is the average acceleration of the ball through the collision with the wall?
A submarine is 304 m horizontally out from the shore and 126 m beneath the surface of the water. A laser beam is sent from the sub so that it strikes the surface of the water at a point 232 m from the shore. If beam just strikes the top of a building..
an inductor with an inductance of 2.90h and a resistor with a resistance of 6.00 ohms are connected to the terminals of
The vibration of a diatomic molecule can be modeled as a simple harmonic oscillator. The values for the mass and force constant are 10^-26 kg and 10^3 N/m, respectively. This will work as long as the temperature is sufficiently low (assume it is in t..
A street lamp weighs 180 N. It is supported by two wires that form an angle of 140° with each other. What is the tension in each wire supporting the street lamp
The diameter of the He atom is approximately 0.10nm. Compute the density of the He atom in (assuming that it is a sphere).
A person in a boat sees a ?sh in the water of index 1.33 at an angle of 54 degrees relative to the water's surface. What is the true angle relative to the water's surface
A particular engine has a power output of 6.00 kW and an efficiency of 29.0 percent. Assume the engine expels 8000 Joule of energy in each cycle. Calculate the time required to complete each cycle
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.5 and at an angle of 36.9 above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 9.00 above the point at which it left the bat?
The asymptotic wavelength (λ limit) for the Brackett series is 1500 nm. Determine the wavelength of the first emission line
assume a brown dwarf has a surface temperature of 1000 K and approximately the same radius as jupiter. what is its luminosity compared to that of the sun
when points charges q1 8.4muc and q2 5.6muc are brought near each other each experience a repulsive force of
How much is the spring compressed?
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