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Q1. Two people are carrying a uniform wooden board that is 3.00 m long and weighs 160 N. If one person applies an upward force equivalent to 60 N at one end, at what point does the other person lift? Start with a free body diagram of the board.
Q2. A young boy swings the yo-yo horizontally above his head at the angular acceleration of 0.34 rad/s^2. If the tangential acceleration of a yo-yo at the end of the string is 0.19 m/s^2, how long is the string?
Guess scale factor of the Universe
1. A communications system uses QPSK instead of binary PSK. How much bandwidth is saved 2. A modem utilizes 8PSK modulation. If the modem's baud rate is 24 kbps, what is the information rate in kbps
Calculate the radius of the path, direction of the force experienced by the electron and the path of the electron through the magnetic field.
A 36 g ball is shot from a spring gun whose spring has a force constant of 529 N/m. The spring can be compressed 4 cm. How high will the ball go if the gun is aimed vertically
A plot of the temperature versus the energy per kg added to a piece of ice as it goes from below freezing at - 10°C to becoming steam at 110°C consists of straight lines, What do the upward slopes represent
Four protons and four electrons are located inside a pyramid and are separate from each other, What is the net value of electric flux through the surface of the pyramid
The voltage across the terminals of a 9.20V battery is 8.40V when the battery is connected to a 50.0? load. What is the battery's internal resistance
An unmarked police car, travelling a constant 94 km/h, is passed by the speeder travelling 153 km/h. precisely 0.70 s after the speeder passes, policeman steps on the accelerator. If the police car's acceleration is 2.30 m/s^2, how much time elapses ..
The middle C string on a piano is under a tension of 944N. The period and wavelength of a wave on this string are 3.82 ms, calculate the linear density of the string
A wire with a length of 3.6m and a mass of 0.78kgis in a region of space with a magnetic field of 0.86T. What is the minimum current needed to levitate the wire
A telescope has an objective with a refractive power of 1.35 diopters, What is the angular magnification of the telescope
Equal masses of 0 oC ice and 100 oC steam are mixed together to form water. What is the final temperature of the water
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