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Consider a proton and an electron separated by a distance of 3 nm. Find the magnitude of the gravitational force between them?
Air (density = 1.29kg/m^3) passes over the top and bottom surfaces of an aircraft whose effective wing area is 75.5m2. what is the mass of the plane
a diffraction grating with 210 lines per mm is used in an experiment to study the visible spectrum of a gas discharge
A satellite moves in a circular earth orbit that has a radius of 8.38 x 106 m. A model airplane is flying on a 22.8-m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane an..
Antenna A and Antenna B emit coherent radio waves. Antenna A is 125m due north of Antenna B. Constructive interference occurs 175m due east of antenna B. Determine the three longest possible wavelengths being emitted by the antennae.
A pronghorn antelope has been observed to cover 1.60 km with an average speed of 67.0 km/h. The antelopes speed during the first half of the distance is 88.0km/h. find the antelopes speed during the second half of its run
A compound microscope has an objective lens with a focal length of 2.0 cm and an eyepiece with a focal length of 5.9 cm. what magnification does this microscope produce
Then the driver sees a red light up ahead at next intersection, and starts slowing down at the constant rate. The car stops at the red light, 180 {rm m} from where it was at t = 0.
A coin with a diameter of 2.40 cm is dropped on edge onto ahorizontal surface. how far does the coin roll before coming to rest
During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms.
In a circus performance, a monkey on a sled is given an initialspeed of 3.8 m/s up a 25° incline. How far up the incline does the sled move
assume that at low temperatures only the lattice vibrations and the electrons treated as a fermi gas contribute to the
A crate that weighs 20 Newton starts from rest and slides down a rough 5.0 meter long ramp, Find the Speed of the crate at the bottom of the ramp
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