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Two metal spheres have a radius of 25 cm and the same mass, except one is solid and the other is hollow. Determine the ratio of the speed of the solid sphere to the speed of the hollow sphere after
An object undergoing simple harmonic motion has a maximum acceleration of 85.29 m/s2 and a maximum speed of 1.44 m/s. Find the period T.
The two resistors are connected in parallel across a power supply, and the current through the 9.0 ohm resistor is found to be 0.25 A. find the voltage setting of the power supply?
A 3500-kg vehicle moving east at 50 km/h collides head-on with a6000=kg vehicle moving west at 40 km/h. The two vehicles locktogether. Which way will the wreckage move, and what is the momentum?
What is the ball's maximum acceleration? What is the ball's position when the acceleration is maximum? What is the speed of the ball when x1 = 3.1cm ?
The minimum stopping distance for a car traveling at a speed of 30m/sand is 60 m including the distance traveled during the driver's reaction time of 0.53 s. aWhat is the minimum stopping distance f
The star S0-2, of spectral class B1 V, orbits the central black hole at the Galactic center on an orbit with a semimajor axis a = 920 AU and eccentricity e = 0.867. a) What is the star's distance fr
A vertical scale on a spring balance reads from 0 to 190 . The scale has a length of 14.0 from the 0 to 190 reading. A fish hanging from the bottom of the spring oscillates vertically at a frequency
Calculate the magnitude of the induced emf in the loop while the magnetic field is increasing.
The fixed turntable bearing is frictionless. A lump of clay of mass 2.41 kg and negligible size is dropped onto the turntable from a small distance above it and immediately sticks to the turntable
The center wire in a coaxial cable carries current 6.00 A in one direction, and the sheath around it carries current 6.00 A in the opposite direction. What magnetic field does the cable create at po
If the temperature of a person needs to be cooled by 9 degrees and the mass of the person is 61.6kg. How much heat is needed to do this in kcal?
A 2.28 kg mass connected to a spring completes one oscillation every three seconds. The motion has an amplitude of 1.5 m. The motion started by pulling the mass to the right and then releasing it fr
Suppose a beam of 5.0 eV protons strikes a potential energy barrier of height 6.0 eV and thickness 0.58 nm, at a rate equivalent to a current of 895 A. (a) How long would you have to wait-on average
Object O stands on the central axis of a concave spherical mirror, at a distance of 40 cm. The distance between the focal point and the mirror is 49 cm. What is the magnification m?
The 22.5-g arrow is shot with a speed of 35.5 m/s and passes through the target, which is stopped by the impact. What is the speed of the arrow after passing through the target?
The needle has a magnetic moment of 0.700 mJ/T. What is the needle's rotational inertia about its (vertical) axis of rotation?
What is the angular momentum of a figure skater spinning at 4.5 rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.6m, a radius of 13cm, and a mass of 52k
If the pressure in this fluid is just barely able to push the fluid into the person, what is the pressure in the person's blood? (The density of the intravenous fluid is approximately that of water.
The four tires on the author's car are inflated to an absolute pressure of 2.8 x 105 Pa. If the car has a mass of 1,650 kg, what is the contact area between each tire and the ground?
A 10.0 ohm resistor, a 12x10^-6 F capacitor, and a 17x10^-3 H inductor are connected in series to a 155-V generator. Current max is at frequency = 352 Hz and max value of rms current = 15.5 A at res
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +2.04 cm and an inner radius of curvature of +2.60 cm. What is the focal length of
The bullet goes completely through the target, emerging at only vf= 100 m/s on the opposite side. What is the angular speed of the target just after the collision?
Using the Galilean transformation, find its velocity v'(t') measured in the frame of another car moving in the same direction at constant velocity v.
If he pulls his hands in to his chest, so they're essentially on his rotation axis, how fast will he be spinning? Find the work done by the skater puling the weights to his chest?