A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire is displaced vertically downward by 1.0 m when he is halfway across
If the tension in both halves of the wire at this point is what is the mass of the tightrope walker? Neglect the mass of the wire. A) 85 kg
B) 43 kg
C) 74 kg
D) 91 kg
A
You might also like to view...
The search for radio signals from intelligent civilizations on planets around nearby solar-type stars is an example of a
A) sky survey B) targeted search C) intentional search D) random sweep
Two spheres are made of the same metal and have the same radius, but one is hollow and the other is solid. The spheres are taken through the same temperature increase. Which sphere expands more?
1.solid sphere 2.hollow sphere 3.They expand by the same amount. 4.not enough information to say
Which of the following best describes a phishing scheme?
A. The creation of a fraudulent version of a website. B. To hide the actual URL of a website and display the URL the visitor intended to reach. C. To purposely infringe upon a creative artist's copyrights by linking to his or her content. D. When a perpetrator imitates a legitimate company and sends a message requesting the user verify account information.
Since the Helium molecule (He) is 2 times as massive as the Hydrogen molecule (H2), the speed of sound in Hydrogen is ________ the speed in Helium
A) 1.41 times B) two times C) four times D) eight times E) 1/ times