The temperature at 300 seconds (5 minutes) is the
final temperature of both the metal and the water.
Record it to the nearest 0.1°C in the data table.
Initial temperature of metal =
Initial temperature of water = 0
Final temperature of both =
'c
RETRY
250 ml
Continue (60s more)
05:00

initial temperature of metal : 100

initial temperature of water : 22.4

final temp of both 27.1

Explanation: that one is for aluminum so i don’t know which metal you needed if for though

Initial metal= 100

Initial water= 22.7

Final Both= 24.6

Explanation: THESE ARE FOR COPPER

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.