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Someone is pulling a suitcase through an airport at constant speed. The handle of the suitcase makes an angle of 55 degree with the horizontal. The interface between the floor and lower surface of the suitcase has an effective coefficient of kinetic friction of 0.5. If the normal force exerted by the floor on the suitcase is 20N, what is the pulling force being exerted by the person parallel to the handle?
A spherically symmetric object with a density of 1.57g/cm3 and a radius of 16.5cm is falling. Assuming is has a drag coefficient of 378g/s, what is the magnitude of terminal velocity
The displacement vectors 38.5 cm at 15.0° and 23.0 cm at 62.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
A 2.5-m-long steel wire in a musical instrument has a radius of 0.02 mm. When the wire is under a tension of 91 N, how much does its length change
Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. One end of a rope is attached to the bus, how much work does the tension force do on Magnus
An x-ray photon with wavelength 15.0 pm is scattered at 84.0 degrees by an electron, find the resulting kinetic energy of the electron
The velocity of the transverse waves produced by an earthquake is 6.93 km/s, while that of the longitudinal waves is 11.3652 km/s. How far away was the earthquake
A television is tuned to a station broadcasting at a frequency of 8.50 107 Hz. Find the optimum length of the antenna
Light of wavelength 540 nm is diffracted by a grating ruled with 1000 lines/cm. There are a total of 2000 lines in the grating. Find the angular deviation of the third order image.
A jogger is running around a circular track of circumference 400m. If the jogger has a speed of 12 km/h, what is the centripetal acceleration of the jogger
A laser with wavelength 650 nm is incident on a single slit with width 10 mm. A screen is placed 1 m beyond the slit. How far apart will the first dark bands on either side of the central maximum be?
A box of mass 72.0 kg is connected to a second box with a mass of 34.0 kg. find the magnitude of the tension in the string between the two boxes
A sledge loaded with bricks has a total mass of 17.9 kg and is pulled at constant speed by a rope inclined at 20.3° above the horizontal. What is the mechanical energy lost due to friction
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