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A square pool with 100-m-long sides is created in a concrete parking lot. The walls are concrete 72 cm thick and have a density of 2.5 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.43. What is the maximum possible depth of the pool? (The density of water is 1000 kg/m3.)
A hunter who is a bit of a braggart claims that from a distance of 1.7 km he can selectively shoot either of two squirrels who are sitting 8.0 centimeters apart on the same branch of a tree. Determine the diameter of the pupils of his eyes
A car takes 16 s to go from v = 0 to v = 50 m/s at approximately constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value should you use for a.
A simple pendulum consists of a ball connected to one end of a thin brass wire. Determine the change in the period of the heated pendulum
What is the maximum height, y2, if the object is thrown with a speed of v2 = 1.99v1 from the surface of Jupiter's moon Io? The acceleration due to gravity on Io is g2 = 1.79 m/s2. Give the reply as a multiple of y1.
The last exhibit had a cylinder of mass 1.2 kg and radius .2 meters rolling down an incline with a linear velocity of 2 m/s. How much torque must be exerted by the friction force
Beat frequencies can be used to measure the pitch of an unknown sound even if it normally would be outside the audible range. estimate the operating frequency of brand X
A light string that does not stretch changes from horizontal to vertical as it passes over the edge of a table. The string connects m1, a 3.4 kg block, originally at rest on the horizontal table at a height 1.27m above the floor, to m2, a hanging ..
Two small identical conducting spheres are placed with their centers 0.40 m apart. One is given a charge of 1.2 10-8 C, the other a charge of -1.6 10-8 C. Find the electrostatic force exerted on one sphere by the other
As a stunt coordinator with a background in physics, If Bear can make it far enough across (at least 12 m from where he starts), he can drop down onto the river bank below. How far will he travel across
A 40.0 kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 18.0 m, What is the centripedal acceleration of the child
The average power dissipated in a 47-? resistor is 2.5 W. What is the peak value I0 of the ac current in the resistor
Two small metallic spheres, each of mass 0.30g, are suspended as pendulums by light strings from a common point, calculate the magnitude of the charge on each sphere
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