Question

WORK ON THE OPPOSITE PAGE ANSWERS SAI. (3) Yo Compared with a s SWERS ON THIS PAGE. SHOW WORK ON THE OPI (3) You heat up a substance with LARGER Specific Heat Capacity. ared with a substance with a LOWER Specific Heat Capacity, will its tempera will its temperature rise. (circle one): FASTER THAN ASTER THAN or or SLOWER THAN SLOWE SA2. (3) Circle the 3 terms below which are Regions of the Electromagnetic Spectrum. A) Kinetic B) Sound C) Ultraviolet D) Redshift E) Gravitational F) Emission G) Flux H) Infrared I) Radiative J) X-Ray K) Doppler L) Wavelength SA3. (3) What is meant by the statement that the Heat of Fusion of Silver is 111,000? SA4. (3) How many Joules are needed to heat a 2kg laundry iron from 25C to 180C? SA5. (3) If the laundry iron in #SA4 above uses 4.200 watts of power, how long will it take the iron to heat from 20C to 150C assuming it is well insulated? _seconds SA6. (3) Yosemite Falls in California - at 739m.) is the tallest waterfall in the USA. If the air temperature at the falls equals the water temperature at the top of the falls, how much warmer is the water at the bottom of the falls?? - Cor K) SA7. (3) A grain silo is filled with 1,500,000 kg. of wheat. The area of the silo floor is 38 m². Find the pressure on the silo floor in kg/m² (Pascals). SAS. (3) A silver coin and an aluminum disc of the same mass are both heated to 60C (333K). A) (0) Which will more likely burn you if held in a closed hand? B) (4)Why? SA9. (3) Here are representative values for some radiation quantities. Find the MISSING value! Object Auto windshield (visible) Sunglasses 50% 8% % 70 Camping tent 5% 50% % 7%

Answer 1

Solution SA1. Specific heat capacity gt is detined as 1 ram or Joge to change the amount of heat a Substance must absob its temporature 6y 1°C. 9t s denoted by C C - m 64 C: specific heat capacity Heat DI:Change in temperatu Whese 7harger heat capacity meas more heat pequiredl to heat up 1°C houestheat Copaity means len heat eged to heat up 1°C 7 The tempesatuf of hagor spectic heat cafauty will Slower than hower specifis heat Cafauity subltane

SA2 The Region of the Electo magnetic Spechum given beloro Yrays X-7ay Uta violet ays (UV Tays ) Visible Yays decesaing from top to botom Fnfoared egion aus R Tay mucrowave VID Radio uwaue Thus CORRECT tems U havio let Infrorel OX-rays SA3. Heat fuoion 9t i8 the amount of eher needad to melt at ti multig mass a giuen point temberatur Heat of fuorion of silver 111,000 1/mol energy heededl to mult silue at its melting point temperatuu 96|.6°C) 11,000

SA4)Fhe ipecific heat otron C: 0.450 3/200 maks m 2 Kg m: 20009 Change in temperatux st: (180-25)°C Thus the equined heat - cmst -0.450 X2000 X 1SS P:139.500 joul 1.295x10 joult SAS Gtisen that pose4200 watt. Here At(150- 20)°C -610130 °C C- Thus equlxed heat Cmot mzzky 0.450 X2000 X130 m: 2000 -117,000 joul Thus tme taken- powrr 117,000 - 27-66 Sec time 4 200 Fimt take to heat from 20°c tul so'c 97.86 second.