A rectangular marble block has dimensions 1m by 1m by 5m and weighs 125000N.The marble block is stored with the long side resting on the ground, as in diagram 1.diagram 1diagram 2What is the change in the pressure on the ground due to the block when the block is stored as indiagram 2 rather than diagram 1?A a decrease of 25000 PaB an increase of 100 000 PaC an increase of 125 000 PaD no changeA ODنقطة واحدةThe arrows show an outline of the processes in an oil-fired power station.oil is burnt turns turbine turns generator → output transformerWhat are the processes for the transfer of energy between the turbine and the generator andbetween the generator and the output transformer?turbine to generatorgenerator to output transformerAelectrical workingelectrical workingmechanical workingelectrical workingmechanical workingtransferthermal energyDtransfer of thermal energymechanical workingA A ball of mass 2.0kg is travelling at a speed of 12m/s. It moves towards an object of mass 3.0kgwhich is at rest.12m/s3.0kgat rest2.0kgThe ball hits the object and sticks to it.Which row gives the total momentum, and the speed of both objects immediately after thecollision?total momentumkgm/sspeedm/s4.8B8.0244.8248.0A OB Oc OD Oنقطة واحدةThe diagram shows the energy used by a modern lamp.60W input ofelectrical power48 W of powerwasted in heatingsurroundings12W ofuseful poweroutput as lightWhich expression gives the efficiency of the lamp?1212x 100%4848x 100% D6048x 100% Bx 100%12A60A OBO A

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A rectangular marble block has dimensions 1m by 1m by 5m and weighs 125000N. The marble block is stored with the long side resting on the ground, as in diagram 1. diagram 1 diagram 2 What is the change in the pressure on the ground due to the block when the block is stored as in diagram 2 rather than diagram 17 A a decrease of 25000 Pa B an increase of 100 000 Pa C an increase of 125000 Pa D no change

A rectangular marble block has dimensions 1m by 1m by 5m and weighs 125000N. The marble block is stored with the long side resting on the ground, as in diagram 1. diagram 1 diagram 2 What is the change in the pressure on the ground due to the block when the block is stored as in diagram 2 rather than diagram 17 A a decrease of 25000 Pa B an increase of 100 000 Pa C an increase of 125000 Pa D no change

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.

Question

A rectangular marble block has dimensions 1m by 1m by 5m and weighs 125000N.
The marble block is stored with the long side resting on the ground, as in diagram 1.
diagram 1
diagram 2
What is the change in the pressure on the ground due to the block when the block is stored as in
diagram 2 rather than diagram 1?
A a decrease of 25000 Pa
B an increase of 100 000 Pa
C an increase of 125 000 Pa
D no change
A O
D
نقطة واحدة
The arrows show an outline of the processes in an oil-fired power station.
oil is burnt turns turbine turns generator → output transformer
What are the processes for the transfer of energy between the turbine and the generator and
between the generator and the output transformer?
turbine to generator
generator to output transformer
A
electrical working
electrical working
mechanical working
electrical working
mechanical working
transfer
thermal energy
D
transfer of thermal energy
mechanical working
A

A ball of mass 2.0kg is travelling at a speed of 12m/s. It moves towards an object of mass 3.0kg
which is at rest.
12m/s
3.0kg
at rest
2.0kg
The ball hits the object and sticks to it.
Which row gives the total momentum, and the speed of both objects immediately after the
collision?
total momentum
kgm/s
speed
m/s
4.8
B
8.0
24
4.8
24
8.0
A O
B O
c O
D O
نقطة واحدة
The diagram shows the energy used by a modern lamp.
60W input of
electrical power
48 W of power
wasted in heating
surroundings
12W of
useful power
output as light
Which expression gives the efficiency of the lamp?
12
12
x 100%
48
48
x 100% D
60
48
x 100% B
x 100%
12
A
60
A O
BO A

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