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A projectile is launched straight up at 53 m/s from a height of 86.5 m, at the edge of a sheer cliff. The projectile falls just missing the cliff and hitting the ground below.
1. Find its velocity at impact.
2. Discover the time it takes to hit the ground at the base of the cliff.
3. Discover the maximum height of the projectile above the point of firing.
A whale swims due east for a distance of 18.4 km, turns around and goes due west for 3.51 km, and finally turns around again and heads 8.64 km due east. What is the total distance traveled by the whale
two point charges of equal magnitude are 7.8 cm apart. at the midpoint of the line connecting them their combined
A sphere of copper that has a radius of 5 cm is compressed uniformly by a force of 3.0 108 N. Calculate the change in volume of the sphere
Which of the following are types of electromagnetic radiation? (Check ALL that apply) Sound Radio waves Gamma rays Infrared X-Rays Visible light Pressure waves
A solid, uniform disk of radius 0.250 m and mass 61.6 kg rolls down a ramp of length 4.60 m that makes an angle of 16° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
The image of a very distant car is located 25 cm behind a convex mirror. What is the radius of curvature of the mirror
Two parallel plates of 10-4 m2 in area aregiven equal and opposite charges of 10-7 C. The spacebetween the plates is filled with a dielectric material and the electric field within the dielectric is 3.3×10-5N/C. Determine the dielectric constant of t..
A 6.0 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.7 m/s2, find the force exerted by the rope on the bucket
They result in elastic collision. Car a is moving towards car b with velocity of 3 m/s and car b is moving toward car a with velocity of 11 m/s. what are the final velocities of cars
A container of hot water at 80 degrees cools to 79 degrees in 15 seconds while it is placed in a room that is t 20 degrees. Use newton's law of cooling to estimate the time it will take for the container to cool from 50 degrees to 49 degrees.
a swimmer heads directly across a river swimming at 1.5 ms relative to the water. she arrives at a point 42 m
A clock face has negative point charges -q, -2q, -3q, · · · , -12q fixed at the positions of the corresponding numerals. The clock hands do not perturb the net field due to the point charges
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