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A man stands on the roof of a building of height 16.8m and throws a rock with a velocity of magnitude 31.8m/s at an angle of 25.0? above the horizontal. You can ignore air resistance.
part A: Calculate the maximum height above the roof reached by the rock. I was able to find this which was 9.21 m
part B: Calculate the magnitude of the velocity of the rock just before it strikes the ground?
part C: Calculate the horizontal distance from the base of the building to the point where the rock strikes the ground.
A thin metallic spherical shell of radius 42.6 cm has a total charge of 6.95, What is the electric field at a distance of 14.4 cm from the center of the spherical shell
Kinetic energy KE has dimensions kg · m^2/s^2. It can be written in terms of the momentum p and mass m as KE=p^2/2m. (a) Determine the proper units for momentum using dimensional analysis. (Use the following as necessary: kg, m, and s.)
A 91 g arrow is fired from a bow whose string exerts an average force of 115 N on the arrow over a distance of 78 cm. Illustrate what is the speed of the arrow as it leaves the bow?
A charge of q = +7.50 µC is located in an electric field. The x and y components of the electric field are Ex = 4.80 103 N/C and Ey = 7.40 103 N/C, respectively. (a) What is the magnitude of the force on the charge? (b) Determine the angle that th..
A 550 N physics student stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 450N. (a) Find the acceleration of the elevator. Find the mass of the worker.
A toy cork gun contains a spring whose spring constant is 10.02 N/m. The spring is compressed 5.0 cm and then used to propel a 6.00 g cork. The cork, however, sticks to the spring for 1 cm beyond its unstretched length before separation occurs. The m..
If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
A basketball player grabbing a rebound jumps 70.80 cm perpendicularly. How much total time (ascent and descent) does the player spend (a) in the top 11.2 cm of this jump and (b) in the bottom 11.20 cm? Do your results describe why such players see..
Illustrate what is the time necessary for crossing if the hunter wishes to move neither upstream nor downstream whilst crossing the river? Draw the vectors to scale on a graph to determine the answer.
All distant galaxies are moving away from us. Describe why this does not imply that we are at the center of universe.
What is the magnitude of the electric field 19.7 cm directly above an isolated 3.25×10^?5 C charge? What is the direction of the electric field? Downward or upward?
How many homes could be heated with the waste heat
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