1. Suppose acup of Cocoa cooled from 90°C to 60°% was 20°c Gfler 10 in a room whose temp. min. a.) What is the teme a€ter 15 min! b.) How long will it take to decrease to 45°c ?

Q: ー★ evalva te secte dk

A:

Q: 2. Calculate the sound intensity in watts/m2 of a 65-decibel sound.

A: Given,             65 DBWe have to find out Sound Intensity in watts/m2.

Q: : (풍). 11. Give the exact value of sec

A:

Q: 224т т?/sec 56™ m² / sec 14т т./ sec о 28т т?/sec

A:

Q: Use the formula for conversion between Fahrenheit and Celsius derived in Example 14 to convert each…

A:

Q: Suppose a block of metal is heated to 250 ° F and then brought into a room that is at 90° F at 5 pm.…

A: Given that: The difference in Temperature of the Metal Block and Room at 5:30 PM is 5oF. Label as Td…

Q: ng to his calculations reds of dollars) t yea Ets 8)

A: Here P(t)=t3-16t2+25t+50         , (0≤t≤8) The inflection point is the point where F''(t)=0 Then at…

Q: QUESTION 7 n aircraft with a landing speed of 200 km

A: In this question, the concept of acceleration is applied. Acceleration The rate at which an object…

Q: Given that dr = ln a, find the exact value of a. V16 + 9x V9+ 4x?

A:

Q: A metal is heated up to a temperature of 500°C. It is then exposed to a temperature of 38C.

A: Given that Metal is heated up to temperature 5000c The surrounding temperature is 380c Temperature…

Q: The de Broglie wavelength (in nanometer) for an electron moving with 8.658 x m/s is: 104

A:

Q: is the amount of energy that it takes to raise the temperature of 1 gram of a substance by 1 degree…

A: Ans 1:   specific heat ans 2:    0 kelvin Ans 3 :  endothermic Ans 4 exothermic

Q: 10. Coober Pedy is a town in Australia that mines most of the world's precious opals. Because of the…

A: The given figure is

Q: Approximate to three decimal places.

A: Approximate to three decimal places.  a csc 43°40'        b sec 0.26

Q: Find the exact value of csc 45°.

A: See attached file for a step by step explanation.

Q: Calculate the pH of 0.903 M solution of HCI.

A: Solution is given below:

Q: 0 = arctan(0.4) ~ 21.8° or 0.3805 rad

A: We have to calculate θ, if θ=tan-10.4 θ=tan-10.4≈21.80° We know that to convert degree into radian,…

Q: 4. A certain earthquake in 1989 had a magnitude of 5 on the Richter scale. How many joules were…

A:

Q: An underwater (but near the surface) explosion is detected by sonar on a ship 30 seconds before it…

A: NOTE: Refresh your page if you can't see any equations. . as we know speed of sound in air=330 m/s…

Q: by first- shifting find L(e-tt)= %3D

A:

Q: 1. A thermometer reading 180C is brought into a room where the temperature is 700C ; 1 minute la…

A:

Q: Do the following on paper, scan or photograph your work, and submit it. You have a room that is 4 m…

A:

Q: 1 Find Yhe ofwarion g he Citcle Basing uah a tint Pl10) and hauing its One Cu6)

A: The equation of circle with center h,k and radius r is calculated using the formula x-h2+y-k2=r2 .…

Q: 1. Suppose the odometer on our car is broken and we want to estimate the distance driven over a 30…

A:

Q: 1. A thermometer is taken from an inside room to the outside, where the air temperature is 15°F.…

A:

Q: 5. tan H = 5.18 vers to the nearest ter

A: We need to find value of H.

Q: During a polytropic process, the ideal gas changes state from 20 psia and 40 F to 116 psia and 338…

A:

Q: Suppose that a cup of soup cooled from 90°C to 60°C after 15 minutes in a room whose temperature was…

A:

Q: 1B) A red wine is brought up from the wine cellar, which is cool 10˚C, and left to breathe in a room…

A: Let T1 and T2 be the wine temperature and room temperature, respectively.

Q: 4. If the temperature ina thermometer reads 105.5 °F, What is that in °C?

A: Given temperature = 105.5°F

Q: Use the reduction formula for tanh^10

A:

Q: QUESTION 3 3. Convert 10 m" to litres.

A:

Q: 1. A thermometer is taken from an inside room to the outside, where the air temperature is 8°F.…

A:

Q: 4. How many revolutions will a car wheel of diameter 30 in, make over a period of half an hour if…

A:

Q: 4(-1)" Estimate 2N 1 correct to one decimal place.

A: In order to get k decimal places of accuracy after rounding, you need an error less than 0.5×10-k.…

Q: What is the intensity level of a lawm mower if the sound has the intensity of 0.00063 W/m^2?

A: Given  Intensity level L = 10 log(I/Io) db I = 0.00063 W/m2 = 63× 10-5 W/m2 Io =  10-12 W/m2

Q: 12. The hydrogen ion concentration of a lemon is about 0.01. What is its pH?

A:

Q: Each second, a star converts 1.3 × 10° tons of hydrogen into helium and energy in the form of gamma…

A: Introduction: The phrase "standard form" is used to describe the typical shape of a variety of…

Q: 4.7 Use the EBM and R to estimate the lunar surface temperature at lunar latitude 30° North and at…

A:

Q: Use a calculator to approximate sec 4.     1.0024

A: To determine: Approximate the value of sec4 using calculator.

Q: Find the numerical value of a) sinh Cen 4) b) sinh (1

A:

Q: Find the value of X in Figure A 430 100ft

A:

Q: a)What is the temperature of the drink after 50 minutes? b)When will its temperature 15 celcius be…

A:

Q: X s elocity (in ft/s)

A: h(t)=-16t2+49 The above equation for the height is given with the gravity g=32ft/sec2 and initial…

Q: The wavelength (nm) for a photon with an energy of 2.947 electron-volts is:

A:

Q: 10. In Silay City, the temperature outside is 200 °F. A thermometer is placed outside and after 3…

A:

Q: A RL circuit has a resistance of 10 ohms, an inductance of 1.5 henries, an applied emf of 9 volts,…

A:

Q: If the temperature of the metal surface is {6} K, then calculate its value in Fahrenheit

A: Given information: Given that the temperature of the metal surface is K = 6.