In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.22 x 10 m/s. m. (a) Find the force acting on the electron as it revolves in a circular orbit of radius 0.530 x 1010 magnitude direction (b) Find the centripetal acceleration of the electron. magnitude direction
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- In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.20 x 106 m/s. Find (a) the force acting on the electron as it revolves in a circular orbit of radius 0.529 x 10-10 m and (b) the centripetal acceleration of the electron.The gravitational force exerted on an astronaut on the Earth's surface is 650 N directed downward. When she is in the space station in orbit around the Earth, is the gravitational force on her (a) larger, (b) exactly the same, (c) smaller. (d) nearly but not exactly zero. or (e) exactly zero?an electron travelling at 7.72 X 106 m/s [E] enters a force field that reduces its velocity to 2.46 X 106 m/s [E]. The acceleration is constant. the displacement during the acceleration is 0.478m [E] determine the time interval over which the acceleration occurs.
- In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.44 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.32 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the electron. Answer in units of m/s 2 .Consider an object in uniform circular motion (constant speed along a circular path). Which of the following statements is correct? a. The object has no acceleration. b. The centripetal force on the object balances the centrifugal force on the object c. The net force on the object is directed away from the center of the circle. d. The net force on the object is directed toward the center of the circle. e. Both (a) and (b) are correct.In the Bohr model of the hydrogen atom,the speed of the electron is approximately2.44 × 10^6 m/s.Find the central force acting on the electronas it revolves in a circular orbit of radius5.32 × 10^−11 m.Answer in units of N. Find the centripetal acceleration of the electron.Answer in units of m/s^2
- Which of the following statements are true of an object moving in a circle at a constant speed? Include all that apply. The object experiences a force which has a component directed parallel to the direction of motion. Inertia causes objects to move in a circle. There can be a force pushing outwards on the object as long as the net force in inwards. Because the speed is constant, the acceleration is zero. The acceleration and the net force vector are directed perpendicular to each other. If the net force acting upon the object is suddenly reduced to zero, then the object would suddenly depart from its circular path and travel tangent to the circle. The acceleration of the object is directed tangent to the circle.An electron, with an initial horizontal velocity of magnitude 8.88 × 109 cm/s, travels into the region between two horizontal metal plates that are electrically charged. In that region, it travels a horizontal distance of 2.93 cm and has a constant downward acceleration of magnitude 7.51 × 1017 cm/s2 due to the charged plates. Find (a) the time required by the electron to travel the 2.93 cm and (b) the vertical distance it travels during that time. Also find the magnitudes of the (c) horizontal and (d) vertical velocity components of the electron as it emerges.In the very Dutch sport of ducth-dude-on-a-pole, athletes run up to a long pole and then use it to vault across a canal. At the very top of his arc, a 70kg vaulter is moving at 3.5m/s and is 5.0m from the bottom end of the pole. What vertical force does the pole exert on the vaulter (in magnitude)?
- An electron, with an initial horizontal velocity of magnitude 4.57 × 109 cm/s, travels into the region between two horizontal metal plates that are electrically charged. In that region, it travels a horizontal distance of 2.25 cm and has a constant downward acceleration of magnitude 2.35 × 1017 cm/s2 due to the charged plates. Find (a) the time required by the electron to travel the 2.25 cm and (b) the vertical distance it travels during that time. Also find the magnitudes of the (c) horizontal and (d) vertical velocity components of the electron as it emerges. I just need (c) and (d) solved. The answers aren't 4.57*10^7 and -1.15*10^6.An object moving upward cannot be considered free-falling a.Sometimes true b.Always false c.Sometimes fals d.Always true What refers to the force perpendicular to the velocity of an object moving along a curved path?a.Centrifugal force b.Reverse-effective force c. Centripetal force d. Normal force A uniform bar of mass m is supported by a pivot at its top, about which the bar can swing like a pendulum. If a force F is applied perpendicularly to the lower end of the bar as in the diagram, how big must F be in order to hold the bar in equilibrium at an angle θ from the vertical? a.(mg/2) sin (θ)b.(mg/2) cos (θ)c.2mg cos (θ)d.mg sin (θ)e.2mg sin (θ)Why is the following situation impossible? A book sits on an inclined plane on the surface of the Earth. The angle of the plane with the horizontal is 60.0. The coefficient of kinetic friction between the book and the plane of 0.300. At time t = 0, the book is released from rest. The book then slides through a distance of 1.00 m, measured along the plane, in a time interval of 0.483 s.