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A 30 capacitor initially charged to 20 is discharged through a 1.9 resistor. How long does it take to reduce the capacitor's charge to 5.0?
What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 580
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
The distance between two successive minima of a transverse wave is 2.45 m. Five crests of the wave pass a given point along the direction of travel every 14.5 s. (a) Find the frequency of the wave. Hz (b) Find the wave speed. m/s
A spaceship is visiting Planet X. While descending to the surface, its rockets produce 25 kN of upward thrust and the spaceship's speed decreases at a rate of 0.15 m/s2. What is the mass of the spaceship
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, What is the focal length of the second lens
The focal lengths of the objective and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively. compute the final magnification of the microscope
A ping-pong ball of mass 4 gm and traveling with a velocity of 4 m/s collides with stationary tennis ball of mass 5 gm. Calculate the magnitude of the velocity of the tennis ball after the collision
A wave pulse travels down a slinky. The mass of the slinky is m = 0.85 kg and is initially stretched to a length L = 6.2 m. compute the speed of the wave pulse
To which, according to the rotational analog of Newton's second law, is the angular acceleration experienced by an object directly proportional?
An object is thrown straight upwards with a speed of 40.8 m/s from the top of a 59.2 m tall building. What is the maximum height (from the ground) that the object reaches
The rifle fires a bullet with the speed 300m/s. The target is sitting on a tree 100m away from the shooter. What initial angle should be the rifle directed to hit a target
q1. a 0.850 kg block is attached to a spring with spring constant 16.0 nm. while the block is sitting at rest a student
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