The rate of cooling of water increases with fall in temperature. True or False? a) True b) False
Q: 15. A O.100 kg copper sample is dropped from the roof of a 50.0 meter high building. If 50 % of…
A: The heat absorbed by the copper sample is given as, Here, m, cCu and ΔT represent the mass of…
Q: 9. Physics Newton's Law of Cooling expresses the relationship between the temperature of a cooling…
A: Given y = ae-kt+ c where is the temperature , a is the difference between the intial temperature of…
Q: 6) Use the 3 relations (equations) below to relate T(°F) to T(°C). Then, find out, at what…
A:
Q: A surveyor uses a steel measuring tape that is exactly 75000m long at a temperature of 20 degree…
A:
Q: What is the measure of temperature considered as normal in human body? A) 95 deg F B) 97 deg F C)…
A: The temperature of human body as normal is considered to be 98.6 deg F.
Q: An RTD with a range of - 200 to 700 °C is used to measure the temperature inside a furnace, the…
A: relative error = (actual value-measured value)/actual value given actual value = 500 measured value…
Q: 2. A student followed strictly correct procedure in the lab during the experiment of determination…
A: ∆P1 = 100.5 mV ∆P2 = 23.8 mV The pressure in the lab is P0 = 101.30 kPa. Find: The pressure P₁: =? ,…
Q: You add 135 kJ of heat to a block of metal with a mass of 5.0kg. The temperature of the metal rises…
A: The problem can be solved by using the formula for specific heat.
Q: It’s so cold outside! Last night, the temperature decreased by 10°C, or ____ °K.
A: Given: Temperature Decreased by 10°C
Q: If a sample of salt is in water in a constant pressure calorimeter with a heat capacity of 35.5 J/℃…
A: Given : The heat capacity of calorimeter, Cv = 35.5 J/℃ Salt is FeCl2 Mass of Salt = 2.288 g Mass…
Q: 12 grammes of gas occupy a volume of 4 · 103 m³ at a temperature of 27° C. After the gas is heated…
A:
Q: Given the following laboratory calculations, properly report each result: a. (3 pts) Rate of heat…
A: a)R=0.441238SR=0.014875rate of heat gain in calarories per second:,R=R±SR…
Q: Given the parameters below, estimate the percent outside air in this simple single zone heating…
A: Outside air temperature= 5 C Return air temperature= 22 C Mixed air temperature = 18.3 C
Q: 11.The coefficient of thermal conductivity of copper is nine time that of steel. In the composite…
A:
Q: When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C…
A:
Q: Question 5 A unit of temperature has a freezing point of 150 degrees and boiling point of 0. What is…
A: Given that, The lower fixed point, LFP = 150°C…
Q: 3. A solid metal ball sphere(ɛ = 0.76) has a radius of 3.5 cm is heated to 4,650 C and suspended…
A: Given: Emissivity of metal ball = ε = 0.76 Radius of the ball = r = 3.5 cm = 0.035 m Temperature of…
Q: 5) A student is heating a block of chocolate in a pan on the stove. He uses a cooking thermometer to…
A: A graph is provided which shows the variation in temperature of chocolate because od heating as time…
Q: As the temperature increases, which of the following statements is correct? * (1 Point) b. Specific…
A: Density is m/V (mass over volume); if volume increase, density decrease. Thus an increase of…
Q: 1. How long (in seconds) will it take to heat 40 kg of water from 40°C to 80°C with a 20-kW…
A: Since there are multiple questions posted, we will answer the first question. The heat energy needed…
Q: A glass container has a total wall area (including the lid) of 1.75 m2 and a wall thickness of 1.5…
A:
Q: It is possible that with decrease in temperature volume may increase. True or False? a) True b)…
A: True or False: It is possible that with decrease in temperature volume may increase
Q: If the temperature of the surface of the object is 705.8 K, then calculate its value in °F. O a.…
A:
Q: According to Newton’s law of cooling, the rate at which a body cools is proportional to (∆θ)n, where…
A: D
Q: An electric power company sells electricity by the KWh (or 3.6x106J) at a price of Php 12.65 per…
A:
Q: Which of the following statements in regard to temperature is least valid? a. Temperature is that…
A: Explanation based on MCQ's : According to thermodynamics, temperature try to create the thermal…
Q: Express the temperature (73.2oF) in Celsius degrees. Please include 1 decimal place in your answer.
A: The temperature in degree Celsius and Fahrenheit are related as C=59F-32
Q: 6. A 1.25 kg rod of aluminum is thrown into a furnace. Its initial temperature is 20 °C. It then…
A: mass of rod (m) = 1.25 kg Initial temperature (T) = 20oC Final temperature (T') = 660oC Specific…
Q: At 30°C, a brass cube has an edge length of 17 cm. What is the increase in the cube's surface area…
A: Given:The brass length is initial temperature final temperature The question aims to determine:the…
Q: 6. In a physics experiment, a copper cube of mass 300 g is immersed in 100°C boiling water and left…
A:
Q: At 2:00P.M, a thermometer reading is 80°F is taken outside where the air temperature is 20°F. At…
A: Given Data At 2:00 P.M, The initial temperature is:To=80°F The air temperature is:Ts=20°F At 2:03…
Q: An electric power company sells electricity by the KWh (or 3.6x106J) at a price of Php 12.65 per…
A: Given: The mass of the water is m=75 kg The initial temperature of the water is T1=15° C The final…
Q: 3.87kg lead billet is to be melted for a casting operation. Lead has a melting point of 328°C a…
A:
Q: Two pots are identical, except that in one case the flat bottom is aluminum and in the other it is…
A:
Q: Use Charles' Law to find V1. Pay attention to the temperature units. * a. V₁ T₁ 840 K V₂ 1,070 mL T₂…
A: Case(a):Initial temperature is Final temperature is Final volume is Find:Initial volume.
Q: 18. An ordinary glassware was filled to the brim with 200 ml of water and heated to 95 Celsius:…
A: Given Volume of water V=200ml Initial Temperature Ti=350 C Final Temperature Tf=950 C Coefficient…
Q: 9- A student observed that a lamp connected to RC circuit was on for 2.5 seconds if the capacitance…
A: Given: T = 2.5 seconds; C = 500 uF = 500 x 10-6 F; R = 100 ohms.
Q: An increase in temperature of the water may cause other changes. An increase in surface water…
A: Rate of evaporation
The rate of cooling of water increases with fall in temperature. True or False?
a) True
b) False
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 24) It is necessary to determine the specific heat of an unknown object. The mass of the object is 201.0 g. It is determined experimentally that it takes 15.0 J to raise the temperature 10.0° C. What is the specific heat of the object? A) 3,020,000 J/kg.K C) 1500 J/kg.K B) 0.00130 J/kg K D) 7.46 J/kg.KA heater has failed in an instrument air dryer. What is the result? A. Dew point increases. Dew point decreases. Inlet temperature increases. Inlet temperature decreases. В. С. D.4) A balloon used for sampling stratospheric ozone is filled with 160.0 kg of He. What is the volume of the balloon when the balloon rises to 10,000 ft (3048 m, the height of a medium sized mountain) wherein the instruments report that the temperature is - 50 °C and the pressure is 6.479 x 104 Pa.
- Table 1 Specific Heat Capacities of Common Substances Specific heat capacity (J/(kg-°C)) Substance water 4.18 x 10 ethyl alcohol 2.46 × 10 ice 2.1 × 10 aluminum 9.2 × 102 glass 8.4 × 10² iron 4.5 × 102 copper 3.8 x 10? silver 2.4 × 10? lead 1.3 × 10²1. Two thermometers, calibrated in the Celcius scale and the Farenheit scale, are used to measure same temperature. The value on the farenheit thermometer ________________? a. is proportional to that on the Celcius thermometer? b. is greater than that on the Celcius thermometer? c. is less than that on the Celcius thermometer? d. May be greater or less than that Celcius thermometer? . 2. A vapor that condenses into liquid will_______. a. Absorb heat b. Evolve heat c. Have a higher temperature d. Have a lower temperature . 3. A cup of hot coffee can be cooled by placing a cold spoon in it. Assuming that the spoons all have the same mass, the one that is most effective for this purpose is the spoon made of_____ a. Aluminum b.copper c.iron d.silver . 4. One gram of steam at 100 celsius causes a more serious burn than a 1 gram of water at 100 celsius because the steam _____ a. is less dense b.strikes the skin with greater force c.Has a higher specific heat capacity d.Contains more…2
- Late at night the driver had hidden gasoline tank filled. The temperature of the gasoline is 23°C. The tank held is 60 liters. The next day, because of the summer season the gasoline was warmed to 60°C. How much gasoline is overflowed? Use ɣ=950 x10-6 C-16. A bowl of soup at 160 ° F is placed into a room with a temperature of 82 ° F. After one hour, the temperature of the soup is 110 ° F. a) Find a formula for the temperature of the soup, T( t ). b) Find the time that it takes the soup to cool from 160 ° F to 100 ° F.27