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A 40.0 kg wagon is towed up a hill inclined at 18.5 degrees with repect to the horizontal. The tow rope is parallel to the incline and has a tension fo 140 N on it. Assume that the wagon starts from rest at the bottom of the hill, and neglect friction. How fast is the wagon going after moving 80 m up the hill?
The convex lens of a copy machine has a focal length of 25.0cm. A letter to be copied is placed 40.0cm from the lens. How far from the lens is the copy paper located? The machine was adjusted to give an enlarged copy of the letter. How much larger wi..
you stand at the center of a carousel spinning at rate w. you throw a ball horizontally with some velocity xdot from
A cylinder with a cross-sectional area of 9.8 cm2 is fitted with a movable piston. How much force must be applied to the piston to maintain it in its new position
βAn observer that is standing 12m from a stereo sound speaker perceives the sound level from the speaker to be 60 dβ. What is the decrease in the physical intensity in watts/m2
Standing on the surface of a small spherical moon whose radius is 6.81·104 m and whose mass is 7.07·1018 kg, What maximum height above the surface of the moon will the rock reach
Two compact sources of sound oscillate in phase with a frequency of 90 Hz where the speed of sound is 340 m/s. What is the amplitude of the resultant wave at that point
A hollow, conducting sphere with an outer radius of 0.246m and an inner radius of 0.195m has a uniform surface charge density of +6.35×10?6C/m^2. find the strength of the electric field just outside the sphere
Two identical 1500 kg cars are moving perpendicular to eachother. what is the toal momentum of the system
A 2.5hp electric motor on a water well pumps water from 10m below the surface. The density of water is 1.0 kg per liter. How many liters of water does the motor pump in 2.0hr
A non-isotropic two-dimensional solid has a coefficient of linear expansion alone one axis equation to A and along a perpendicular axis equation to B
Messages reach at random to be sent across a communications link with a information rate of 9600 bps. The link is 70 percent utilized, and the average message length is 1000 octets.
What is he wavelength of a 22.75*10^9 Hz radar signal. What is the frequency of an X-ray with wavelength 0.12nm
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