The free-fall time of a gravitationally collapsing cloud is ? T . What would be the...
The free-fall time of a gravitationally collapsing cloud is ? T . What would be the ratio of its free-fall time to ? T if its density were 7.20 times as high?
Homework Answers
Add Answer to:
The free-fall time of a gravitationally collapsing cloud is ? T
. What would be the...
3. Collapsing Cloud. a. The time it takes for a cloud 100,000 AU in diameter to...
3. Collapsing Cloud. a. The time it takes for a cloud 100,000 AU in diameter to collapse to form a new star turns out to be about half the time it would take an object to orbit the star on an elliptical orbit with a semi-major axis of 50,000 AU (half the 100,000 AU diameter). Use Kepler’s third law to find the collapse time, assuming the star has the same mass as the sun. b. Evidence indicates that the...
Raindrops fall 1.16 times 10^3 m from a cloud to the ground. If they were not...
Raindrops fall 1.16 times 10^3 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground?
Penn Racquet Sports Courts Canine Customers Suppose your industry were in free fall What would you...
Penn Racquet Sports Courts Canine Customers Suppose your industry were in free fall What would you do to find more customers? Penn Racquet Sports faced this situation in the late 90s when consumer interest in recreational tennis began to decline. Penn, the nation's No. 1 maker of tennis balls at the time, suffered flat sales and a decade long lull in recreational tennis. Penn needed to take action to save its business. In evaluating the market place. Penn looked for...
answer 4 and 5 please 4. For free fall, v; -o, time of fall = .015...
answer 4 and 5 please
4. For free fall, v; -o, time of fall = .015 s; from what height the ball fell? 5. For an inclined plane, e - 20". what is coefficient of static friction,
1. [25 points) Idealized frictionless free fall of an object that is dropped from being at...
1. [25 points) Idealized frictionless free fall of an object that is dropped from being at rest at i = 0. For the following question, to model the free fall of a falling rock, assume the usual idealizing simplifications for solving "free fall" problems. Consider the following experiment. A rock with a mass of m= 2 kg is dropped at the time t = 0 from a height of 140 m above ground. Assume that the rock is simply dropped...
answer 4 and 5 please 4 For free fall, v- 0, time of fall = 015...
answer 4 and 5 please 4 For free fall, v- 0, time of fall = 015 s; from what height the ball fell? 5. For an inclined plane, e-20 what is coefficient of static friction, u
+ On the moon, all free-fall distance functions are of the form s(t) = 0.81t, where...
+ On the moon, all free-fall distance functions are of the form s(t) = 0.81t, where t is in seconds and s is in meters. An object is dropped from a height of 150 meters above the moon. After 10 sec, consider parts (a) through (d) below. a) How far has the obiect fallen? b) How fast is it traveling2 c) What is its acceleration? d) Explain the meaning of the second derivative of this free-fall function. a) The object...
6. [10 points) For the following question, to model the free fall of a falling rock,...
6. [10 points) For the following question, to model the free fall of a falling rock, assume the usual idealizing simplifications for solving "free fall" problems. Work with the approximate value g = 9.8 m/s2 for the Earth's gravitational acceleration. Consider the following experiment. The Leaning Tower of Pisa is known worldwide for its nearly four- degree lean. The height of the tower is 55.86 meters from the ground on the low side, and 56.67 meters on the high side....
tra Credit Draw the position vs time graph for a object in free fall that has...
tra Credit Draw the position vs time graph for a object in free fall that has an initial velocity -10 m/s and maximum height of 50 m Position versus Time z(m) 140 120 100 T 80 60 40 20 1 2 3 4 5 67 89 10 11 12 13 14 15
At time t = 0, a rock climber accidentally allows a piton to fall freely from...
At time t = 0, a rock climber accidentally allows a piton to
fall freely from a high point on the rock wall to the valley below
him. Then, after a short delay, his climbing partner, who is 11.8 m
higher on the wall, throws a piton downward. The positions y of the
pitons versus t during the falling are given in the figure. With
what speed is the second piton thrown?
0 t (s)
Raindrops fall 1.16 times 10^3 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground?
Penn Racquet Sports Courts Canine Customers Suppose your industry were in free fall What would you do to find more customers? Penn Racquet Sports faced this situation in the late 90s when consumer interest in recreational tennis began to decline. Penn, the nation's No. 1 maker of tennis balls at the time, suffered flat sales and a decade long lull in recreational tennis. Penn needed to take action to save its business. In evaluating the market place. Penn looked for...
answer 4 and 5 please
4. For free fall, v; -o, time of fall = .015 s; from what height the ball fell? 5. For an inclined plane, e - 20". what is coefficient of static friction,
1. [25 points) Idealized frictionless free fall of an object that is dropped from being at rest at i = 0. For the following question, to model the free fall of a falling rock, assume the usual idealizing simplifications for solving "free fall" problems. Consider the following experiment. A rock with a mass of m= 2 kg is dropped at the time t = 0 from a height of 140 m above ground. Assume that the rock is simply dropped...
answer 4 and 5 please 4 For free fall, v- 0, time of fall = 015 s; from what height the ball fell? 5. For an inclined plane, e-20 what is coefficient of static friction, u
+ On the moon, all free-fall distance functions are of the form s(t) = 0.81t, where t is in seconds and s is in meters. An object is dropped from a height of 150 meters above the moon. After 10 sec, consider parts (a) through (d) below. a) How far has the obiect fallen? b) How fast is it traveling2 c) What is its acceleration? d) Explain the meaning of the second derivative of this free-fall function. a) The object...
6. [10 points) For the following question, to model the free fall of a falling rock, assume the usual idealizing simplifications for solving "free fall" problems. Work with the approximate value g = 9.8 m/s2 for the Earth's gravitational acceleration. Consider the following experiment. The Leaning Tower of Pisa is known worldwide for its nearly four- degree lean. The height of the tower is 55.86 meters from the ground on the low side, and 56.67 meters on the high side....
tra Credit Draw the position vs time graph for a object in free fall that has an initial velocity -10 m/s and maximum height of 50 m Position versus Time z(m) 140 120 100 T 80 60 40 20 1 2 3 4 5 67 89 10 11 12 13 14 15
At time t = 0, a rock climber accidentally allows a piton to
fall freely from a high point on the rock wall to the valley below
him. Then, after a short delay, his climbing partner, who is 11.8 m
higher on the wall, throws a piton downward. The positions y of the
pitons versus t during the falling are given in the figure. With
what speed is the second piton thrown?
0 t (s)
Most questions answered within 3 hours.
-
Employee training can
be defined as planned organizational efforts to help employees
learn job-related knowledge, skills,...
asked 21 minutes ago -
Which for loop is implemented correctly in Java?
Group of answer choices
for (i = 0...
asked 1 hour ago -
Required information
[The following information applies to the questions
displayed below.]
In 2019, Alliant Corporation acquired...
asked 1 hour ago -
How much must I invest today if I want to withdraw 1/3 of my
original investment...
asked 3 hours ago -
What is meant by a “term premium”?
What can explain such a premium? Is it a...
asked 5 hours ago -
23. Which molecule has only covalent bonds? A. CO2 B. Al2O3 C.
Mg3N2
24. The octet...
asked 5 hours ago -
the
total pressure for a mixture of N2O4 and NO2 is 2.20 atm. If Kp=
7.10...
asked 5 hours ago -
Delaware Corp. prepared a master budget that included $22,385
for direct materials, $28,600 for direct labor,...
asked 5 hours ago -
For pesticide HCB (hexachlorobenzene), its logarithmic partition
coefficient log Kow is 5.6. What would be the...
asked 5 hours ago -
A chemist requires 0.422 mil Na2CO3 for a reaction. How many
grams does this correspond to?
asked 5 hours ago -
If the vapor pressure of carvone is approximately 9.4 torr at 99
°C, approximately how much...
asked 6 hours ago -
A juice bottling company is carrying out a test at 10%
significance that the mean population...
asked 6 hours ago