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A certain mass, when hung from a certain spring, causes the spring to stretch by an amount h compared to itsequilibrium length. If the mass is displaced vertically from thisequilibrium, it will oscillate up and down with aperiod Tosc. Find the period of vertical oscillations of the mass m. The spring, pulley, and ropes have negligible mass.
Compute the force that acts on a square access hatch at the bottom of the tank that measures 0.25m by 0.25m.
an initially uncharged electroscope is polarized by bringing a negatively charged rubber rod near the bulb, how many electrons are on the leaf end
When at rest, a proton experiences a net electromagnetic force that has a magnitude of 7.2 × 10-14 N and points in the positive x-direction. Find the magnitude and direction of the electric field
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.56 s, and the velocity of the car decreases to + 4.62 m/s. What is the car's displacement
A truck covers 40.0 m in 7.15 s while uniformly slowing down to a final velocity of 1.45 m/s. Find the truck's original speed
A 1.80 mH inductor is connected in series with a dc battery of negligible internal resistance, a 0.840 k-ohm resistor, and an open switch. How long after the switch is closed will it take for the current in the circuit to reach half of its maximum..
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration os 0.745 rad/s^2. What angle does the acceleration of the child make with the tangential direction
A parallel-plate capacitor has plates separated by 0.72 mm. what is the potential difference between the plates
A fireworks rocket is launched vertically into the night sky with an initial speed of 40 m/s. find the magnitude and direction of the second piece
Find the speed of a satellite moving in a circular orbit just above the surface of Mars. Mars has a radius of 3.40 106 m and a mass of 6.42 1023 kg
A bullet is fired through a board 13.5 cm thick, with a line of motion perpendicular to the face of the board. If the bullet enters with a speed of 387 m/s and emerges with a speed of 163 m/s, what is its acceleration as it passes through the boar..
Two point charges are separated by a distance r and repel each other with a force F. what is the magnitude of the force of repulsion between them
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