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Neglecting air resistance, how fast will a soccer ball (m = 0.45 kg) be travelling when it hits the ground, if it's dropped from the Sears Tower (442 m high)? How long will it take to hit the ground?
Direction of Velocity at Various Times in Flight for Projectile Motion Conceptual Question For each of the motions described below, determine the algebraic sign (positive, negative, or zero) of the x component and y component of velocity of the ob..
A bottle rocket is launched at an angle of 30 degrees from the ground with a speed of 200m/s. What is the range of the rocket if it lands on level ground
An arrow is shot vertically upward and then 2.02 s later passes the top of a tree 41.3 m high. How much longer will the arrow travel upward, and how high will it go
q1. an aluminium cup of 180 cm3 capacities is totally filled with glycerin at 18deg c. how much glycerin in cubic cm
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 6 state? What is the energy of the Hydrogen atom when the electron is in the n = 14 state
During half a rotation the flywheel has to absorb 1000 J of energy. If the maximum permissible speed fluctuation is ± 60 RPM, what is the minimum rotational inertia of the flywheel? Assume there is no friction.
A 125 kg mail bag hangs by a vertical rope 3.3 m long. A postal worker then displaces the bag to a position 2.2 m sideways from its original position, What horizontal force is necessary to hold the bag in the new position
A storm drain receives runoff from a street 500 m long and 12 m wide and an adjacent pedestrian walkway that has a total are of 0.5 ha in size. Estimate the lead (Pb) concentration in the runoff. The design conditions are design storm intensity = ..
in a cylindrical gas counter with a ventral wire radius equal to 25 micro meters .001 in. outer radius 25mm and 1000 v
a proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. what is the
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.843 m and 2.83 kg, what is its rotational kinetic energy
find the electric flux through the bottom of the car. What was the jogger's average speed in m/s.
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