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An evacuated spherical diving bell containing a camera is in the ocean at a depth of 187 m. It has a flat, transparent, circular port with a diameter of 12.5 cm. Find the magnitude of the total force on the port. For the density of seawater use 1025 kg/m3.
A hot-air balloon is ascending at the rate of 12 m/s and is 84 m above the ground when a package is dropped over the side. Explain how long does the package take to reach the ground?
A hypothertical 30 cm long arm. For the purposes of answering this question assume that the arm itself is weightless. what is the maximum mass that can be held in the hand if the muscle is attached 2 cm from the bleow
A Ferris wheel accelerates from rest to an angular speed of 1.5 rad s-1 in 12 s. what is the net torque on the wheel
Estimate how many books can be shelved in a college library with 3400 of floor space. Assume 5 shelves high, having books on both sides
A 6.43 kg ball is thrown upward with an initial speed of 14.34 m/s. Ignore air resistance when answering the following questions. What is the ball's initial kinetic energy
An inductor (L = 400 mH), a capacitor (C = 4.43 F), and a resistor (R = 500 ?) are connected in series. A 50.0-Hz AC source produces a peak current of 250 mA in the circuit. (a) Calculate the required peak voltage Vmax. (b) Determine the phase ang..
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 54 dB by an observer 10 km away. What is the average power generated by the horn
A 0.14-kg balloon is filled with helium (density = 0.179 kg/m3). If the balloon is a sphere with a radius of 5.3 m, what is the maximum weight it can lift
find the speed of the test charge. find the distance the car travels during this time in m.
A boy catches - with bare hands and his arm extended - a 0.16 kg baseball coming directly toward him ar a speed of 25 m/s. what is the average force the boy's hand feel while catching the ball
A small metal ball is given a negative charge, then brought near (i.e., within a few millimetres) to end A of the rod. What happens to end A of the rod when the ball approaches it closely this first time.
Two blocks of masses m1 = 1.90 kg and m2 = 5.18 kg are each released from rest at a height of h = 5.15 m on a frictionless track, find the maximum height to which m1 rises after the collision
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