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A rock is dropped (initial speed is zero) from the top of a building and is in freefall (g = 9.8 m/s2) for 4.5 seconds before it hits the ground. How tall is the building? Answer in meters.
What is the angular momentum of a 3.2 kg uniform cylindrical grinding wheel of radius 12cm while rotating at 1400 rpm.
q1. a proton moves perpendicular to a uniform magnetic field at a speed of 1.80 x 107 ms and experiences an
A block is suspended from a string connected to a balance. While in air, the scale reads 350 N. What is the buoyancy force on the object when immersed in water
A viewing window on the side of a large tank at a public aquarium measures 41 in. by 46 in. What is the total outward force on the window
Find the tension in the strings by drawing the FBD for the rod first. The drawing looks like a horizontal line(ceiling) with a isosceles triangle attached, the bottom of the triangle is L(rod).
A ball has a diameter of 3.89 cm and average density of 0.0844 g/cm3. What force is required to hold it completely submerged under water
Sunlight is observed to focus at a point 18.5 cm behind alens. What is its power in diopters
The mass of Jupiter is 317.8000 times that of earth, and its radius is 10.960 times that of earth. Compute the acceleration of gravity at the surface of Jupiter. Express your answer in g's (i.e. as a ratio to our acceleration of gravity).
A rifle with a weight of 30 N fires a 5.0-g bullet with a speed of 300 m/s. If a 700-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle
Three deer, A, B, and C, are grazing in a field. Deer B is located 63.4 m from deer A at an angle of 53.0 ° north of west. What is the distance between deer A and C
An object is placed 55 centimeter from a concave mirror of focal length 96 centimeter. The object is 6.7 centimeter tall. Determine how tall is the image
What is the equilibrium temperature of this system? The average specific heat of aluminum over this temperature range is 653 J/(kg*K), determine the amount of water that has frozen
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