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You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.51 times the passenger's weight. The elevator accelerates upward with constant acceleration for a distance of 2.9 m and then starts to slow down.
What is the maximum speed of the elevator?
A rod with an initial length of 4.67 m i heated from a temperature of 5 oC to 58 oC. What is the new total length of the rod
The electric field everywhere on the surface of a charged sphere of radius 0.190 m has a magnitude of 585 N/C, What is the net charge on the sphere
Calculate the energy of the electron in the ground state of triple ionized beryllium, which has an atomic number Z = 4
A circus cannon, which has a mass M = 5000 kg, is tilted at q = 30°. The cannon is now lowered to shoot horizontally. It fires the same projectile at the same speed relative to the cannon. With what speed does the cannon now recoil with respect to ..
How much would an 80.0kg person weigh) on mars where an acceleration of gravity is 3.93m/s^2 and (b) on earth's moon where the acceleration of gravity is 1.63m/s^2.
A 0.19-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. What is the change in gravitational potential energy of the system from release to reaching the bottom of the well
The thrust produced by a single jet engine creates a force of F = 63000 N. It takes the jet (with a mass of m = 9300 kg) a distance of d = 0.75 km to take off. What is the take-off speed of the jet vt in m/s
q1. an electric field of 254000 nc points due west at the certain spot. what are the magnitude and direction of the
A force of 20 N holds an ideal spring with a 1-N/m spring constant in compression. The potential energy stored in the spring is
A rubber ball of mass 39.0 g is dropped from a height of 1.80 m onto a floor. find impulse was applied to the ball during the collision
A quasar 10 billion light years from Earth appears the same brightness as a star 5.9*10^4 light years away. How does the power ouput of the quasar compare with that of the star
A single 6.3 μF capacitor is connected across the terminals of a 60 Hz voltage source, what is the capacitive reactance of the capacitor
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