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A car is traveling around a circular banked curve at constant speed of 21 m/s. If the car is traveling a circle of 461 m, and the length (width) of the road is 14.6 m, what is the vertical height of road at the top of the bank in meters? Hint: find the bank angle of the road first and then use trigonometry to find the height of the road.
A boat, which has a speed of v= 12.0 m/s in still water, heads directly across a river which has a current of 7.00 m/s and is d = 480 meter wide. Obtain how far downstream will this boat reach the opposite shore
The small piston of a hydraulic lift has a diameter of 8.70 cm , and its large piston has a diameter of 44.0 cm. Determine the pressure applied to the fluid in the lift
What is the velocity of the coupled boxcars after collision?
X- rays are created in a standard x-ray tube by accelerating electron across a potential difference of V and having the electrons collide with a metal target to eject x-ray. when the wavelength of the x-ray is measured using Bragg diffraction from..
consider a heat pump which is used to cool down a home during the summer. its coefficient of performance in cooling
a student exchanges the stock headphones b1 89 db for her mp3 player for a new set that is louder b2 94.5db. if the
A bat is pursuing an insect and using echolocation of 60-kHz sound waves to track the insect. find the difference in the two echo times the bat measures
A proton initially has a v = 4.0i-2.0j+3.0k and then 4 sec later has a v (Vector) = -2.0i - 2.0j+5.0 k (in m/s). For that 4.0 second, Determine the protons average acceleration
Two particles having charges q1 = 0.400nC and q2 = 4.00nC are separated by a distance of 1.50m. At what point along the line connecting the two charges is the total electric field due to the two charges equal to zero
A hot-air balloon is ascending at the rate of 14 m/s and is 57 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
for a glass lens (n=1.50), the focal length in the air is 10 cm and an object places on one side of it creates an image that is smaller, find the new position of the image and fully describe it
A movie projector is equipped with a 0.6-meter focal length lens that is positioned 0.605 meters from the film. How many times larger is the image than the object
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