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A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 72 cm and is wrapped around the top at a place where its radius is 2.3 cm. The thickness of the string is negligible. The top is initially at rest. Someone pulls the free end of the string, thereby unwinding it and giving the top an angular acceleration of +10 rad/s2. What is the final angular velocity of the top when the string is completely unwound?
How is HR structured in your organization?
A steel wire having a mass of 3.50 g and a length of 1.00 m is fixed at both ends and has a tension of 1010 N. Find the frequency of the third harmonic
The figure below shows a three-particle system, with masses m1 = 2.5 kg, m2 = 4.0 kg, and m3 = 9.0 kg. (a) What are the coordinates of the center of mass?
During a solar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Moon between the Earth and the Sun. What force is exerted by the Sun on the Earth
Identify key companies in the emerging market of digital healthcare
A standard 100 W (120 V) lightbulb contains a 9.40 cm-long tungsten filament. The high-temperature resistivity of tungsten is 9.0*10^-7Om. What is the diameter of the filament?
Please use your notes, book, or other source to find a relationship (equation) that describes the motion of a mass oscillating on a spring. How could you predict how fast the mass will oscillate
A 180g air-track glider is attached to a spring. The glider is pushed in 12.4cm and released. A student with a stopwatch finds that 12.0 oscillations take 12.5s . What is the spring constant?
What are your thoughts about "systems thinking?" Any of you run into this where you work?
A 4.00-kg mass is placed at (4.00, 3.00) m and a 6.00-kg mass is placed at (3.00, ?4.00) m. What is the moment of inertia of this system of masses about the x-axis
A balloon is filled with 5.45 liters of helium at a pressure of 1.25 atm and a temperature of 29.5° C. Find the mass of the helium
Assume air resistance is negligible; from what height (in cm) above the compressed spring was the block dropped.
Suppose we are on a space ship generating a beam of electrons. In our reference frame, the electrons are traveling in the +x direction with a speed of 0.87c. Find the speed of the electrons in the Earth's reference frame
A photoelectric experiment using a cesium metal surface produces stopping potentials of 0.95V and 0.38V using light with wavelengths of 435.8nm and 546.1nm, respectively. find the threshold frequency
The end of the spring is next to the 13 cm mark on the ruler. If a 2.0-kg mass is now attached to the end of the spring, elucidate where will the end of the spring line up with the ruler marks?
A loop of wire with radius R has charge density 3theta^2 , where theta is in radians. Write an integral (but do not solve) to find the electric potential at the center of the loop
Find out the magnitude of the velocity of the heavier fragment relative to the ground just after explosion.
An 9.2 mH inductor is connected to an ac generator (10.0 V rms, 650 Hz). Determine the peak value of the current supplied by the generator
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
Water flows at a rate of 26L/min through a horizontal 8.0 cm diameter pipe under a pressure of 9.2 PA. What is the pressure at this point
A ten pound car wheel has a moment of inertia of 0.3 kg m2. How much torque is required to stop the wheel
An astronomical telescope is designed with an overall magnification of 80x. The objective has a focal length of 98.0 cm. What should be the focal length of the eyepiece
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