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A plane travels horizontally at 737 m/s at an angle of 35.9 degrees west of north. Taking east as the positive x-direction and north as the positive y-direction, find the component of the speed of the plane west in m/s and to three significant digits.
Assume the sound speed in air is 343 m/s. A parachutist leaps from a hovering helicopter and after 3.1s of free fall shouts back toward the helicopter
The threshold of dark-adapted (scotopic) vision is 6 multiplied by 10-11 W/m2 at a central wavelength of 550 nm. If light with this intensity and wavelength enters the eye when the pupil is open to its maximum diameter of 7.5mm, how many photons p..
A nonuniform horizontal bar of mass m is supported by two massless wires against gravity. What is the position of the center of mass of the bar
Europa, a moon of jupiter, has an orbital radius of 6.70 x10^8 m, and a period of 3.55 days. What is the mass of Jupiter
A uniform bar is 5.00 m long and weighs 975 N. A weight of 255 N is attached to one end while a weight of 375 N is attached 1.50 m from the other end. Find the tension in the cable
A 1.0-cm-diameter microscope objective has a focal length of 2.8mm. What is the resolving power of the objective if it is used in an oil-immersion microscope with noil= 1.45
In a double-slit experiment, the slit separation d is 13.0 times the slit width w. How many bright interference fringes are in the central diffraction envelope
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk in rad/s2
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF, what is the thermal conductivity of this metal and Identify the metal
one ball of mass 575 g traveling 3.50 m/s to the right collides with another ball of mass 425 g that is intially at rest. what is the velocity of the heavier ball
If a nearsighted person has a far point df that is 3.50m from the eye, what is the focal length f1 of the contact lenses
Suppose 28.5 kg of 87.5°C water is placed in contact with 28.5 kg of 11°C water. What is the change in heat (in J) of the hot water
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