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A charged particle of mass m and charge q is suspended from a light thread in a region of space where there is a uniform horizontal electric field. What is the angle between the thread and a vertical line? Draw a free body diagram showing the forces acting on the mass m.
Two speakers, one directly behind the other, are each generating a 295-Hz sound wave. What is the smallest separation distance between the speakers that would produce destructive interference at a listener standing in front of them? Take the speed..
Illustrate at what horizontal distance, x, from the base of the building will the rock strike the ground? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2 .
How many kilometers per liter will a car obtain if its engine is 25 percent efficient and it encounters and average force of 1000 Newtons? Suppose the energy content of gasoline is 40,000,000 joules per liter (J/L).
At the edge of town, the driver again accelerates. the driver would usually maintain a constant acceleration that is less than the maximum
Find out the magnitude and direction of the velocity of the heavier fragment relative to the ground just after the explosion. Please provide step-by-step method to solve the problem.
a 6.0 cm diameter horizontal pipe gradually narrows to 4.5 cm. When water flows through the pipe at a certain rate, What is the volume rate of flow
A disk, initially rotating at 106 rad/s, is slowed down with a constant angular acceleration of magnitude 2.24 rad/s2. How much time does the disk take to stop
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76 10-11 m. Determine the kinetic energy of the electron.
A 23 gram bullet traveling 230m/s penetrates a 2kg block of wood and emerge clearly at 170m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
A beam of protons, each with kinetic energy 40 MeV, approaches a step potential of 30 MeV. What fraction of the beam is reflected and what fraction transmitted
Use conservation of energy to calculate the speed of the alpha particle at infinity. m/s (e) If the two protons are released from rest and the alpha particle remains fixed, calculate the speed of the protons at infinity. m/s
A student pushes a loaded sled whose mass m is 240kg for a distance d of 2.3m over the frictionless surface of a forzen lake. if the sled starts from rest, what is its final velocity
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