(a) How much gravitational potential energy (relative to the ground on which it is built)
(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 4 x 105kg and its center of mass is 19.0 m above the surrounding ground?
(b) What is the ratio of this energy to the daily food intake of a person (1.2 x 107 J)
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(a) How much gravitational potential energy (relative to the ground on which it is built)
A stone sphere of radius 7.00 m rests in a flat field. Relative to the ground,...
A stone sphere of radius 7.00 m rests in a flat field. Relative to the ground, what is the gravitational potential energy of a 90.0-kg person sitting on the very top of the sphere? a. 7.76 x 104 J b. 1.23 x 104 J c. 3.88 x 104 J
How much gravitational potential energy must a 3010-kg satellite acquire in order to attain a geosynchronous...
How much gravitational potential energy must a 3010-kg satellite acquire in order to attain a geosynchronous orbit? Express your answer to three significant figures and include appropriate units. How much kinetic energy must it gain? Note that because of the rotation of the Earth on its axis, the satellite had a velocity of 466 m/s relative to the center of the Earth just before launch. Express your answer to three significant figures and include appropriate units.
Problem 12.50 Part A How much gravitational potential energy must a 3110-kg satollite acquire in order...
Problem 12.50 Part A How much gravitational potential energy must a 3110-kg satollite acquire in order to attain a geosynchronous orbit? Express your answer to three significant figures and include appropriate units. 1.78 10 J Submit Previous Answers Request Answer Incorrect; Try Again; 2 attempts remaining Part B How much kinetic energy must it gain? Note that because of the rotation of the Earth on its axis, the satelite had velocity of 457 m/s relative to the center of the...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
1 pts Question 3 How much potential energy (J) does a 2000 kg car possess relative...
1 pts Question 3 How much potential energy (J) does a 2000 kg car possess relative to the floor of a garage when it is onta hydraulic lift 5 ft above the floor? 10,000 1x 10 3,000 3 X101
(c) 10.383 m/s (d)11.810 m/s 19. What is the gravitational potential energy of a book of...
(c) 10.383 m/s (d)11.810 m/s 19. What is the gravitational potential energy of a book of mass 4.00 kg if it is held at a height of 5.50 m above the floor? (Take zero potential energy to be at the floor.) (a) 22.0J (b) 405.1 J (c) 314.2 (d) 215.6J 20. Which of the following is, in general, not a conserved quantity? (a) Linear momentum (b) Angular momentunm (c) Total energy (d) Kinetic energy 21. A bullet of mass 35.0...
1. What is the emf of a battery that increases the electric potential energy of 0.050...
1. What is the emf of a battery that increases the electric potential energy of 0.050 C of charge by 0.60 J as it moves from the negative to the positive terminal? 2 .A thermistor is a device whose resistance varies with temperature. At 20∘C a thermistor's resistance is 10.0 kΩ. When connected to a 1.2 V battery, the current through the thermistor increases by 20 μA as the temperature increases to 30∘C. What is the thermistor's resistance at this...
1. A car with constant acceleration of 2.3 m/s2 drives toward east (positive x-axces). (a)How much...
1. A car with constant acceleration of 2.3 m/s2 drives toward east (positive x-axces). (a)How much time in seconds is required for the car to change its speed from 10 m/s to 35 m/s? (b)Calculate the total distance in meters, covered during that time (c) Calculate the average speed during that time interval (d) Find x- and y- components of the vector of acceleration 2. From the top of a tower, a person drops a pebble. The peble strikes the...
1) The parallel axis theorem provides a useful way to calculate the moment of inertia I...
1) The parallel axis theorem provides a useful way to calculate the moment of inertia I about an arbitrary axis. The theorem states that I = Icm + Mh2, where Icm is the moment of inertia of the object relative to an axis that passes through the center of mass and is parallel to the axis of interest, M is the total mass of the object, and h is the perpendicular distance between the two axes. Use this theorem and...
Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a...
Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a negative charge spread uniformly over their surfaces The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -2.10 pC and the other 2.60 pc, and each cell can be modeled as a sphere 3.75 × 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed,...
Problem 12.50 Part A How much gravitational potential energy must a 3110-kg satollite acquire in order to attain a geosynchronous orbit? Express your answer to three significant figures and include appropriate units. 1.78 10 J Submit Previous Answers Request Answer Incorrect; Try Again; 2 attempts remaining Part B How much kinetic energy must it gain? Note that because of the rotation of the Earth on its axis, the satelite had velocity of 457 m/s relative to the center of the...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
1 pts Question 3 How much potential energy (J) does a 2000 kg car possess relative to the floor of a garage when it is onta hydraulic lift 5 ft above the floor? 10,000 1x 10 3,000 3 X101
(c) 10.383 m/s (d)11.810 m/s 19. What is the gravitational potential energy of a book of mass 4.00 kg if it is held at a height of 5.50 m above the floor? (Take zero potential energy to be at the floor.) (a) 22.0J (b) 405.1 J (c) 314.2 (d) 215.6J 20. Which of the following is, in general, not a conserved quantity? (a) Linear momentum (b) Angular momentunm (c) Total energy (d) Kinetic energy 21. A bullet of mass 35.0...
Two red blood cells each have a mass of 9.05 x 10-14 kg and carry a negative charge spread uniformly over their surfaces The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -2.10 pC and the other 2.60 pc, and each cell can be modeled as a sphere 3.75 × 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed,...
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