Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Physics Expert

Find the initial speed of the keys while they are thrown.

A student throws a set of keys vertically upward to her sorority sister in a window 4.0 m above. The keys are caught 1.50 s later by the sister's outstretched hand. With what initial speed were the keys thrown?
1. 10.0 m/s
2. 15.0 m/s
3. 13.7 m/s
4. 17.1 m/s

Determine time period of oscillation of a balloon.

a. A light balloon filled with helium of density 0.18 kg/m3 is tied to a light string of length L = 3m. The string is tied to the ground, forming an "inverted" simple pendulum. If the balloon is displaced somewhat from equilibrium, show that the motion is simple harmonic and decide the period of motion. Take the density of air to be 1.29 kg/m3.

b. Expectant parents are thrilled to hear their unborn baby's heart beat, revealed by an ultrasound motion detector. Assume the fetus's ventricular wall moves in simple harmonic motion with amplitude 1.80 mm and frequency 115 per minute. (i) Find out the maximum linear speed of the heart wall. Suppose the motion detector in contact with the mother's abdomen produces sound at precisely 2.00 MHz, which travels through the tissue at 1.50 km/s. (ii) Find out the maximum frequency at which the reflected sound is received by the motion detector. (By electronically listening for echoes, the detector can produce beeps of sound.)

1741_time period of oscillation of a balloon.jpg

Physics, Academics

  • Category:- Physics
  • Reference No.:- M917371

Have any Question? 


Related Questions in Physics

A 100 kg uniform ladder that is 250 m long is placed

A 10.0 kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to a height of 2.10 m, as shown in the figure. The base of the ladder rests on a rough horizontal floor whose coefficient ...

An accelerating sports car goes from 0 mph to 60 mph in

An accelerating sports car goes from 0 mph to 60 mph in five seconds. Its velocity is given in the following table, converted from miles per hour to feet per second, so that all time measurements are in seconds. (Note: 1 ...

1 do the same as in problem 2 for a small hydro power

1. Do the same as in Problem 2 for a small hydro power plant. 2. Develop a program to estimate induction generator performance as an efficient and qualified source of energy for an industrial application.

Explain in qualitative terms how gauss law is modified if

Explain, in qualitative terms, how Gauss' Law is modified if two point charges were extremely close together, their separation being less than the wavelength of an electron (about 386 femtometers).

Describe an arithmetic coding algorithm to encode random

Describe an arithmetic coding algorithm to encode random bit strings of length N and weight K (i.e., K ones and N -K zeroes) where N and K are given. For the case N =5, K =2, show in detail the intervals corresponding to ...

1 what do you think of the idea of using a variational

1. What do you think of the idea of using a variational method to optimize an approximating distribution Q which we then use as a proposal density for importance sampling? 2. Define the relative entropy or Kullback-Leibl ...

1 how many intrinsic electrons and holes are there in a

1. How many intrinsic electrons and holes are there in a thermal de Broglie cube at 300K in Si corresponding to an energy equal to k B T? What is the thermal fluctuation in carrier density In this cube? Can the intrinsic ...

A solar cell panel is attached to the exterior of an

A solar cell panel is attached to the exterior of an orbiting satellite which can be considered a vacuum. The panel is initially in the shadows. It is suddenly exposed to the sun-light. Describe the transient events that ...

1 by how much could the size of a file be reduced given

1. By how much could the size of a file be reduced given that it is an ASCII file? How would you achieve this reduction? 2. What are the mathematical shapes of the curves between the cusps?

During the compression stroke of a certain gasoline engine

During the compression stroke of a certain gasoline engine, the pressure increases from 1.00 atm to 20.0 atm. If the process is adiabatic and the air-fuel mixture behaves as a diatomic ideal gas, a. By what factor does t ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro