COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 1, Problem 51QAP
To determine
The units of the gravitational constant
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Students have asked these similar questions
Newton's law of universal gravitation is represented by
Mm
F = G•
where F is the gravitational force, M and m are masses, and r is a length. Force has the Sl units
kg - m/s?. What are the Sl units of the proportionality constant G?
The acceleration for incline motion is given by a = g sin 0. Consider g-10 for the
Earth and g=25 for the Jupiter and change 0.
a) Find interesting points & find their values
mathematically
b) Does your estimate make sense physically?
c) Sketch a plot (by hand, do not use any software!)
with the y-axis been dimensionless when it makes
sense.
Problem 1)
Conversions between these various units of length are as follows:
On another planet, lengths are measured in units of Kratzers, Arenas, and Jains.
• 2.17 Kratzers = 10.04 centi-Arenas
• 6.31 Arenas
= 1.21 Jains
You measure a certain rate of acceleration to be 0.00000472 Jains/sec². Use the given conversion factors (among
others) to convert this measured acceleration to Kratzers/hr?.
Chapter 1 Solutions
COLLEGE PHYSICS
Ch. 1 - Prob. 1QAPCh. 1 - Prob. 2QAPCh. 1 - Prob. 3QAPCh. 1 - Prob. 4QAPCh. 1 - Prob. 5QAPCh. 1 - Prob. 6QAPCh. 1 - Prob. 7QAPCh. 1 - Prob. 8QAPCh. 1 - Prob. 9QAPCh. 1 - Prob. 10QAP
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- The distance between two cities is 100 mi. What is the number of kilometers between the two cities? (a) smaller than 100 (b) larger than 100 (c) equal to 100arrow_forwardA map suggests that Atlanta is 730 miles in a direction of 5.00 north of cast from Dallas. The same map slum's that Chicago is 560 miles in a direction of 21.0 west of north from Atlanta. Figure P3.24 shows the locations of these three cities. Modeling the Earth as flat, use this information to find the displacement from Dallas 10 Chicago.arrow_forwardThe Moon's mass is 7.35 1022 kg, and it moves in a nearly circular orbit with radius 3.84 108 m. The period of its motion is 27.3 days. Use this, information to determine the Moon's (a) orbital speed and (b) its acceleration.arrow_forward
- The acceleration due to gravity, g, is constant at sea level on the Earth's surface. However, the acceleration decreases as an object moves away from the Earth's surface due to the increase in distance from the center of the Earth. Derive an expression for the acceleration due to gravity at a distance h above the surface of the Earth, g₁. Express the equation in terms of the radius R of the Earth, g, and h. &h= Suppose a 91.75 kg hiker has ascended to a height of 1802 m above sea level in the process of climbing Mt. Washington. By what percent has the hiker's weight changed from its value at sea level as a result of climbing to this elevation? Use g = 9,807 m/s² and R= 6.371 x 106 m. Enter your answer as a positive value. weight change =arrow_forwardA large wheel with a radius of 7 m completes a revolution every 16 seconds. The bottom of the wheel is 1.5 m above the ground. a) Draw a graph showing the change in height of a person above the ground as a function of time for three revolutions, starting from the lowest point on the wheel. b) Formulate the equation corresponding to the graph. c) Predict the change in the graph and the equation if the Ferris wheel spins more slowly. d) Verify the prediction you made in c) by plotting the graph for three revolutions and revolutions and formulating the corresponding equation, if the wheel completes one revolution every 20 s. The average height of water in a harbour is 5 m. At low tide, the height of the water .arrow_forwardA rocket is designed to be launched to space with an acceleration defined by the equation given below where "y" is the altitude of the rocket in the time of flight and "R" is the radius of the earth equal to 6,400 kilometers. a) What is the minimum value of velocity so that the rocket will not fall back to earth. In this case use the situation that the final velocity is zero as the value of "y" approaches infinity. Express your answer in unit of km/hr. b) What should be the value of the initial velocity of the rocket if it has to reach a velocity of 1,500 m/s at an altitude of 5 kilometers above the ground? Express your answer in unit of km/hr. c) The rocket was launched at a velocity equal to 8,900 m/s. How much altitude will the rocket gain at an instance the velocity is 5,000 m/s? Express your answer in unit of meter. Note: a = -9.81[R² / (R + y)²]arrow_forward
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