easy-watermark domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home/u223937191/domains/scienceworksheets.co.uk/public_html/wp-includes/functions.php on line 6170Practice Questions
1.State the definition of power
Rate of energy transfer
2.Suggest a power value for the following appliances
(a)Mains powered radio
Any value between 5 to 50W
(b)TV
Any value between 40W and 150W
(c)Dishwasher
Any value between 1500W and 2900W
3. Explain why the cost of keeping a low-power appliance running for long duration equals that of a high-power appliance used for the same short period.
Cost is based on total energy used.Â
Using a high power appliance for a short period of time, will use the same total amount of energy as using a low power appliance for a long period of time.
Absorption and Emission of EM Radiation
JJ Thomson and Plum pudding model
Ernest Rutherford and the Nuclear Model
Niels Bohr changing the Nuclear Model
Discovering the Proton and Neutron
Measuring radiation from radioactivity
Radiation types and properties
Random nature of radioactive decay
Radioactive contamination or irradiation
Hazards of contamination and irradiation
Studies on the effects of radiation on humans