Two 0.56-kg basketballs, each with a radius of 15 cm, are just touching. Part A How much energy is required to change the separation between the centers f the basketballs to 1.0 m ? (Ignore any other gravitational interactions.) Express your answer in joules. View Available Hint(s) IVE ΑΣΦ AU 9.88 10-11 Submit Previous Answers X Incorrect; Try Again; 2 attempts remaining J

Two 0.56-kg basketballs, each with a radius of 15 cm, are just touching. Part A How much energy is required to change the separation between the centers f the basketballs to 1.0 m ? (Ignore any other gravitational interactions.) Express your answer in joules. View Available Hint(s) IVE ΑΣΦ AU 9.88 10-11 Submit Previous Answers X Incorrect; Try Again; 2 attempts remaining J

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Description: Two 0.56-kg basketballs, each with a radius of 15 cm, are justtouching.Part AHow much energy is required to change the separation between the centers of the basketballs to 1.0 m ? (Ignore any other gravitational interactions.)Express your answer in

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 8.1CQ: One person drops a ball from the top of a building while another person at the bottom observes its...

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One person drops a ball from the top of a building while another person at the bottom observes its motion. Will these two people agree (a) on the value of the gravitational potential energy of the ball-Earth system? (b) On the change in potential energy? (c) On the kinetic energy of the ball at some point in its motion?
A system consists of five particles. How many terms appear in the expression for the total gravitational potential energy of the system? (a) 4 (b) 5 (c) 10 (d) 20 (e) 25
Explain why it is easier to climb a mountain on a zigzag path rather than one straight up the side. Is your increase in gravitational potential energy the same in both cases? Is your energy consumption the same in both?
Can you please answer the following questions Our Sun shines bright with a luminosity of 3.828 x 1026 Watt. Her energy is responsible for manyprocesses and the habitable temperatures on the Earth that make our life possible.(a) Calculate the amount of energy arriving on the Earth in a single day.(b) To how many litres of heating oil (energy density: 37.3 x 106J/litre) is this equivalent?(c) The Earth reflects 30% of this energy: Determine the temperature on Earth’s surface.(d) What other factors should be considered to get an even more precise temperature estimate?Note: The Earth’s radius is 6370 km; the Sun’s radius is 696 x 103 km; 1 AU is 1.495 x 108 km.
GMmr. Find work done by a rocket escaping the gravity field of a planet by integrating a. Show steps using a limit for the improper integral and set the result equal to kinetic energy of escape velocity mus to find a formula for escape velocity. b. Given G= G = 6.67 x10,M= 5.97 x 10* and r, = 6,680,000 compute escape velocity at an altitude of 300 km about the surface of the Earth. Write answer in meters/sec and miles/hour.
Two 0.56-kg basketballs, each with a radius of 15 cm, are just touching. Part A How much energy is required to change the separation between the centers of the basketballs to 1.0 m ? (Ignore any other gravitational interactions.) Express your answer in joules. ► View Available Hint(s) AU = Submit Part B AU = VE ΑΣΦ Submit How much energy is required to change the separation between the centers of the basketballs to 14 m ? (Ignore any other gravitational interactions.) Express your answer in joules. ► View Available Hint(s) B VE ΑΣΦ ? X ? J
A 1.70 x 10²-g particle is released from rest at point A on the inside of a smooth hemispherical bowl of radius R = 34.5 cm (figure below). R B (a) Calculate its gravitational potential energy at A relative to B. 0.575 J (b) Calculate its kinetic energy at B. 0.575 J (c) Calculate its speed at B. 2.6 m/s CET Need Help? (d) Calculate its potential energy at C relative to B. 2.6 Did you accidentally divide or take the inverse in your calculation? J (e) Calculate its kinetic energy at C. J Read It T 2R/3
Question 3 a. A space craft achieved a maximum speed of 125,000 km/h on its way to photograph Mars. Beyond what distance from the Sun is this speed sufficient to escape the solar system? b. Consider a large massive spherical shell object. With all of its mass M is distributed at its radius R (shown in the figure). Draw a schematic granh of gravitational force and corresponding Page 1 of 2 gravitational potential energy experienced by another object m at a distance r, where the distance varies as, r → 0 to r 0o. Figure 2: Question 3(b) Two masses system
1. What happens to energy as the angle is changed? Why?2. Which object is quicker to strike the wall? Why? The ref(175 kg) piano (150kg) or crate(300kg)3. At different times what must be true about the sum of kinetic, potential, and thermal energies? Why?4. What happens to the energy after the object hits the wall? Why?5. When is kinetic energy largest? Why?6. When is potential energy largest? Why?7. When is heat energy largest? Why?8. What is the effect of friction on the kinetic, potential, and thermal energies? 9. What type of energy is equal and opposite to the work done by gravity?10. What type of energy is equal and opposite to the work done by friction?
aprendiza.. Sh Coaster Gizmos Lab E hat/Tools Add-ons Help ☆ 回@ Last edit was 3 minutes ago ormal text Arial 11 + BIUA ▼|三三三 4. or stop at 0.4 6. Calculate: Gravitational potential energy (U) depends on three things: the object's mass (m), its height (h), and gravitational acceleration (g), which is 9.81 m/s on Earth's surface: U = mgh Energy is measured in joules (J). One joule is equal to one 1 kg•m/s. VWhen calculating the energy of an object, it is helpful to convert the mass and height to kilograms and meters. (Recall there are 1,000 grams in a kilogram and 100 centimeters in a meter.) A. What is the mass of the 50-gram car, in kilograms? B. Set Hill1 to 75 cm and the other hills to O cm. What is the height in meters? C. What is the potential energy of the car, in joules? Calculate Kinetic energy (K) depends on the mass and speed (v) of the object. The equation for kinetic energy is:
Questions 3 and 4 below refer to the universal gravitational potential energy function U(r) for a planet with mass M and radius R, which is shown in the figure below. R 3. If a projectile is launched from the surface of the planet with a speed equal to the planets escape speed, how much mechanical energy does it have when it reaches a distance r = ∞ ? (n I I I Distance from center of planet, r 4. If an astronaut who is orbiting the planet at a radius of 3R wants to move their orbit to a radius of 2R, what direction should they fire their thrusters? (and how is your answer supported by the given graph of U(r) ?)
4 masses of I kg f we have four lying at the coordinates ith eajual distance the origin. Calculate kinetic when object spins at 1rad/s of 2m from energy around Ż-axis.