1. Meter Rule
Meter rule is used to measure the small length or distance between any two points.
2. Measuring Tape
It is also use to measure length and distance in meters and centimeters.
3. Vernier calipers.
It can be use to measure small diameter or radius of objects up-to 10th part of a millimeter.
4. Micrometer screw gauge.
It is also use to measure diameter or radius unto 100th part of a millimeter.
5.Beam balance
It is use to measure mass upto 10th part of a gram.
6. Physical balance
it is use to measure mass upto 100th part of a gram.
7.Electronic balance
It is use to measure mass upto 100th part of a gram.
8. Stop watch.
It is use to measure time upto 10th and 100th part of a second.
9.Measuring cylinder
It is use to measure volume of a small object.
10. Hydrometer
It is use to measure density of liquids.
11. Barometer.
It is use to measure the atmospheric pressure.
12. Thermometer
It is use to measure temperature.
13. Ammeter
It is used to measure amount of electric current in circuit.
14.Photometer.
It is use to measure intensity of light.
15. Protector,.
It can be use to measure angle.
16. Lactometer.
It can be use to measure specific gravity of milk.
Answer:
Isogonic line is a line joining the points of equal magnetic declination.
Explanation:
Isogonal line is a line that joins the places of equal declination. Also isogonal line is known as the line which connects the point having the same magnetic declination.
Answer:
24.084 m/s
Explanation:
From the law of conservation of linear momentum
Total momentum before collision equals to the total momentum after collision
Since momentum=mv where m is mass and v is velocity
where is the mass of the truck, is velocity of the truck, is the common velocity of moving and standing truck after collision and is the mass of the standing truck
Making the subject we obtain
Substituting as 25000 Kg, as 22.3 m/s, as 2000 Kg we obtain
Therefore, assuming no friction and considering that after collision they still move eastwards hence common velocity and initial truck velocities are positive
The truck was moving at 24.084 m/s
Answer:
v = 73.75 m/s
Explanation:
It is given that,
A rocket rises vertically, from rest, with an acceleration of 3.2 m/s² until it runs out of fuel at an altitude of 850 m.
Let us assume we need to find the velocity of the rocket when it runs out of fuel.
Let v is the final speed. Using the third equation of kinematics as :
u = 0
So, the velocity of the rocket when it runs out of the fuel is 73.75 m/s
A. All living things and objects