Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Physics Expert

Q1. Two children seat themselves on the see-saw. The one on left has a weight of 400 N whereas the one on right weighs 300 N. The fulcrum is at the mid-point of the see-saw. If the child on the left is not at end however 1.50 m from the fulcrum is and the see-saw is balanced, find out the torque given by the weight of the child on right?

a) 600 N•m
b) 450N•m
c) -600 N•m
d) -450 N•m
e) 0 N m

Q2. The quantity ‘moment of inertia’ (in terms of basic quantities of mass, length and time) is equal to:

a) ML2T2
b) ML
c) ML2
d) ML1T2
e) ML2

Q3. The total kinetic energy of a baseball thrown with spinning motion is the function of:

a) Its linear speed however not rotational speed.
b) Its rotational speed however not linear speed.
c) Both linear and rotational speeds.
d) Neither linear nor rotational speed.
e) None of the above.

Q4. A bowling ball consists of a mass of 7.0 kg, a moment of inertia of 2.8 x 102 kgm2 and a radius of 0.10 m. If it rolls down the lane devoid of slipping at a linear speed of 4.0 m/s, determine its total kinetic energy?

a) 45 J
b) 32 J
c) 11 J
d) 78 J.
e) 85 J.

Q5. The solid sphere of mass 4.0 kg and radius 0.12 m begins from rest at the top of the ramp inclined 15, and rolls to the bottom. The upper end of ramp is 1.2 m higher than the lower end. Find out the linear speed of the sphere when it reaches the bottom of ramp? (I = 0.4MR2 for a solid sphere and g = 9.8 m/s2)

a) 4.7 m/s
b) 4.1 m/s
c) 3.4 m/s
d) 2.4 m/s
e) 1.8 m/s

Physics, Academics

  • Category:- Physics
  • Reference No.:- M99928

Have any Question? 


Related Questions in Physics

Model the tungsten filament of a lightbulb as a black body

Model the tungsten filament of a lightbulb as a black body at temperature 2 900 K. (a) Determine the wavelength of light it emits most strongly. (b) Explain why the answer to part (a) suggests that more energy from the l ...

1 using the expression for the gradient in polar

1. Using the expression for the gradient in polar coordinates (Appendix A), find the gradient of ψ(r,θ) when Where is the gradient maximum? The terms A and a are constant. 2. Given the following expression for the pressu ...

Afind the best linear approximation lx to fx ex near x

(a) Find the best linear approximation, L(x), to f(x) = ex near x = 0. (b) What is the sign of the error, E(x) = f(x) - L(x) for x near 0? (c) Find the true value of the function at x = 1. What is the error? (Give decima ...

1 a circular coin of diameter a is thrown onto a square

1. A circular coin of diameter a is thrown onto a square grid whose squares are b × b. a. Buffon's needle. A needle of length a is thrown onto a plane covered with equally spaced parallel lines with separation b. What is ...

A state-of-the-art npn si transistor has a signal

A state-of-the-art n/p/n Si transistor has a signal amplifying or electrically active p-type base layer whose volume is 1μm 3  and which is doped with 10 18  boron/cm 3 . Suppose that the transistor will not work due to ...

What is the increase in entropy when one gram of ice at

What is the increase in entropy when one gram of ice at 0° C is melted and heated to water vapor at 500° C?

A driver in a truck applies the brakes to come to a stop at

A driver in a truck applies the brakes to come to a stop at a red light. Just before braking, the truck's initial speed was 16 m/s, and it was moving in the west direction. What was the truck's average velocity during br ...

An object located 323 cm in front of a lens forms an image

An object located 32.3 cm in front of a lens forms an image on a screen 9.69 cm behind the lens. Find the focal length of the lens. Answer in units of cm. 010 (part 2 of 2) 10.0 points What is the magni?cation of the obj ...

A juniper-wood plank measuringnbsp032nbspft by 1 ft

A juniper-wood plank measuring 0.32 ft by 1 ft by 12 ft is totally submerged in water. (a) What is its weight? (b) What is the buoyant force acting on it? (c) What is the size and the direction of the net force on it?

Explain how flight is achieved nbspplease provide an

Explain how flight is achieved.  Please provide an example and use  three concepts or laws to support  your explanation and example.

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen