For a car driving around a flat, unbanked curve without sliding, the centripetal force is supplied byIf Earth's radius and mass were both half their present values, the acceleration due to gravity at Earth'ssurface would have a value ofm/s².law states that the magnitude of the force exerted by an ideal spring is directlyproportional to the distance the spring moves from equilibrium.A ball is dropped and bounces back to 100% of its original height. The collision between the ball and theground wasThe force of attraction or repulsion between two charged objects is called theforce.The spreading out of a wave as it passes through an opening is called_

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University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 9.1CYU: Check Your Understanding The U.S. Air Force uses “10gs” (an acceleration equal to 109.8m/s2 ) as the...

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A space probe is fired as a projectile from the Earths surface with an initial speed of 2.00 104 m/s. What will its speed be when it is very far from the Earth? Ignore atmospheric friction and the rotation of the Earth. P11.26 Ki+Ui=Kf+Uf12mvi2+GMEm(1rf1ri)=12mvf212vi2+GME(01RE)=12vf2orvf2=v122GMEREandvf=(v122GMERE)1/2,vf=[(2.00104)21.25108]1/2m/s=1.66104m/s
A pendulum consists of a small object called a bob hanging from a light cord of fixed length, with the top end of the cord fixed, as represented in Figure OQ5.6. The bob moves without friction, swinging equally high on both sides. It moves from its turning point A through point B and reaches its maximum speed at point C. (a) Of these points, is there a point where the bob has nonzero radial acceleration and zero tangential acceleration? If so, which point? What is the direction of its total acceleration at this point? (b) Of these points, is there a point where the bob has nonzero tangential acceleration and zero radial acceleration? If so, which point? What is the direction of its total acceleration at this point? (c) Is there a point where the bob has no acceleration? If so, which point? (d) Is there a point where the bob has both nonzero tangential and radial acceleration? If so, which point? What is the direction of its total acceleration at this point? Figure OQ5.6
Repeat the preceding problem, but including a drag force due to air of fdrag=bv .
When a body slides down an inclined plane, does the work of friction depend on the body’s initial speed? Answer the same question for a body sliding down a curved surface.
The Moon moves around the earth with radius 3.84 x 108m (the distance from the center of Earth to the center of Moon). The mass of earth is 6.0 x 1024kg. Calculatethe speed of moon moving around the earth.
(1) The Moon (mM (a) What is the period of the Moon's orbit (in days) around the Earth? (b) What is the total mechanical energy of the Moon? (c) Is the Moon-Earth a bound system or unbound system? (d) When the Moon is in between the Sun and the Earth, how many time larger is the Earth's gravitational pull as compared to the pull from the sun? The distance between the Earth and the Sun is 1.496 × 10ºkm. Report your answer to 4 digits. 7.3477 x 1022kg) orbits the Earth at a distance of 238, 900mi.
(a). Calculate the work (in MJ) necessary to bring a 103 kg object to a height of 1006 km above the surface of the Earth. (b). Calculate the extra work (in J) needed to launch the object into circular orbit at this height.
This is a proportional reasoning calculation. You will want to set up equations, but mostly to look at how the orbital distance affects the orbital velocity, or to set up a ratio. (Once you know how it changes you'll have to multiply by the value at the surface to get an answer in m/s.) At the surface of the exoplanet G 9-40 b, the orbital velocity would be 1.21E+4 m/s. What would the orbital velocity be 11 radii above the surface? m/s. Note: If your answer requires scientific notation, remember that OWL uses "e" notation: 1.1 x 105 is 1.1e5 to OWL.
#4
Consider a pendulum, consisting of a massless string with a mass on the end. The mass is held with the string horizontal, and then released. The mass swings down, and then on its way back up, the string is cut at point P when it makes an angle of 0 with the vertical. "dn cut Fig. 2E.130 (a) -1 3 (а) tan 1 (b) tan -1 3, 1 (c) tan -1 (d) tan(1) 2.
1) If we release a ball of mass 2kg and radius 4cm from rest at the top of the ramp as shown: (a) What is its velocity when it reaches the bottom? (b) How many revolutions has it turned when it reaches the bottom? (c) What is its total kinetic energy, in Joules, when it reaches the bottom? 15m 30°
A rock is dropped from high above the surface of the Earth. The initial speed is 0, and the initial height above the surface is NXRE where RẺ is the radius of the Earth. Calculate the speed of the rock when it hits the upper atmosphere, say at height 20 km above the surface. DATA for the Earth: radius RE 6.38×106 m; mass ME N = 15; (in m/s) = = 5.98x1024 kg.

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