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Syllabus

Iwant any 10 organism and their respiratory organ

what is the difference between ODOMETER and SPEEDOMETER ???

The rotation of the earth on its axis is periodic motion but not oscillatory. why?

why do we multiply 5/18 or 18/5 when we convert?

What type of motion:

1. Soldiers ina march past.

2. Motion of a pendulum

journeys are depicted by separate lines marked with different symbols. Look at the graph

and answer the following questions:

1. What was Romi’s speed per minute while he was moving?

2. For how long did father keep Sony waiting?

3. How far from home did Sony finally meet Romi?

4. What distance did the two of them cover together?

5. For how much time did they walk together?

6. How far is the library from home?

define electromagnet

why do we need to measure time?

2) The distance covered by a body per unit is called as ________

3) The metalic ball is called as _________ of simple pendulum

4) The to and fro motion of a Bob is called _______

a car moves with a speed of 40km/h for 15 minutes then with a speed of 60 km/h for next 15 minutes.find the total distance covered by the car in these 30 minutes.

Define:-1) linear motion2)Circular motion3)periodic motion4)Oscillatory Motion5)Rotational motionDifference between uniform motion & non-uniform motion?

Give any 2 examples of periodic motion to measure time.

option a} mechanical clocks

option b] pendulum clocks

give reason: time measured by quartz clocks is much more accurate than that by the clocks avilable earlier

What is oscillatory motion?

what do you mean by multiple motion and give some examples

pl do answer i have my test on this friday

What are the disadvantages of sand clock or hourglass

what is the main limitations of sundials ?

Iwant the list of 10 objects that moves in straight line

define motion and periodic motion

The discovery of which principle made the accurate measurment of time possible? What is the principle?

what is basic unit of speed?

what property of a simple pendulum makes it useful in measuring time?

Plot a distance-time graph for a body travelling at a speed of 2.5m/s.

A fast runner attains a maximum speed of 10 m/s . What will be km/hr?

Identifythetypesofmotionineachcase:Example of motionTypes of motionAlong a straight line|circular|periodicSoldiers in a march past

Bullock cart moving on a straight road

Hands of an athlete in a race

Pedal of a bicycle in motion

Motion of the earth around the sun

Motion of a swing

Motion of a pendulum

A simple pendulum takes 20 seconds to complete 10 oscillations.

What is the time period of the pendulum?

a simple pendulum takes 32 s to complete 20 oscillations wat is the time period of a pendulum?

define motion ? there are how many types of motion define them by using examples

how the time was measured when pendulum clocks were not available

Michael phelps broke the Olympic record in 100m butterfly stroke with a clocking time of 51.25 seconds in 2008 Beijing Olympics.Determine the speed with which he swam?

what os the difference between speedometer and odometer?how these can be used? any two examples.

At 7:00 a.m the odometre of the car reads 25777.what is the distance covered by the car and its speed when the clock reads 9:15 a.m and the odometre reads 25867?

How do we find acceleration and retardation from the graph??

Why do you think accurate measurement of time became possible much after accurate measurement of length and mass ?

Q.20. Look at the graph above. It shows how three runners ran a 100-meter race.

Which runner won the race? Explain your answer.

Which runner stopped for a rest? Explain your answer.

How long was the stop? Explain your answer.

How long did Bob take to complete the race? Explain your answer.

Calculate Albert's average speed. (Figure the distance and the time first!)

THE SWING OF A PENDULUM GRADUALY DECREASES WITH TIME HOWEVER EVEN THEN IT IS REGARDED AS A RELIABLE TIME KEEPING DEVICE WHY

Distance[m]:0 5 10 15 20 25

time[s]:0 2 4 6 8 10

[a]Draw a distance-time graph for the car.

[b]what conclusion do you get from this graph about the nature of motion of the car?

mcq questions tracing changes through a thousand years online

define periodic events

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes.What is the total distance covered by the car?

a) Sand clock

b) Sundial

c) Pendulum clock

d) Water clock

Which option is correct??

a cheetah runs adistance of 200m in 10sec .what is the speed of cheetah in km/hr?

a) a man, waiting for a bus, standing at one point, on a bus-stand.

b) a man, walking on a level, straight and narrow road, with a constant.

1.Anobject travels 16min 4s and then another 16m in 2s. what is the average speed of object???a labelled diagram of simple pendulum and explain briefly

.periodicevents2. pendulum is the mother of watches and clocks

3. we need to measure

a 108 km/hr into m/s

b 40 m s to km/hr

Only 4 small but important points in table form.

what are the importance of distance time graph?

Measuring time is more difficult than measuring length.Do you agree ? Give reasons

what are the quantities that can be measured called ?If the length of a pendulum is increased four times, its time period will become

accurate measurements of distance , mass and so on were made much before accurate measurement of time became possible why?

the swing of a pendulum gradually decreases with time . however , even then it is regarded as a reliable time keeping deviceWhen an object moves on a straight line with a constant speed it is called a uniform motion. Then , if an object ic moving on circular path with a constant speed is it also be known as uniform motion ? explain.

What do you mean by

Slow motionandFast motion?Q.2. Look at the graph and answer the questions:

1. Between which points is the car stationary?

2. Between which points does the car travel fastest?

3.How long does the car stop for in total?

4. How long does it take for the carto reach point E?

DEAR EXPERTS

What is quartz crystal ?