Design a 1200-W electric hair dryer such that the air temperature and velocity in the dryer will not exceed 50°C and 3 m/s, respectively.

Q: If the pipe at Bhas a diameter of 60 mm arid the hose at A has a diameter of 30 mm, determine the…

A: We will use the Bernoulli’s  equations, which is given as PAρ+vA22g+zA+hpump=PBρ+vB22g+zB+hpump+hL…

Q: When initially at 25 C, the power being supplied to a 555 Ohm resistor in a circuit is 7.5 W. Over…

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Q: A heating coil inside an electric kettle delivers 5.10 kW of electric power to the water in the…

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Q: The process of ____________ occurs when heat is transferred from a hotter object to a cooler object.…

A: The first concept revolves around heat transfer from a hot object to a cold one .The second concept…

Q: 1. Immersion heaters are placed into liquids to warm them up. If 250 g of water in a cup is heated…

A: Given data  Mass m = 250 g Initial temperature ti = 15°c Final Temperature tf = 97°c Time T = 5min =…

Q: A resistor is wired to a battery in a circuit and dissipates a power P1 as heat.  A second resistor,…

A: Given, Power dissipated by single resistor= P1 The power dissipated by two resisters when in series=…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 7.70 A. Assuming the…

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Q: A 40 WW (120 VV) lightbulb has a tungsten filament of diameter 0.040 mmmm . The filament's operating…

A: According to the given daTa V=120 volt P=40 watt T=1500°C D=0.04mm We need to find Length of the…

Q: A 0.281-kg coffee mug is made from a material that has a specific heat capacity of 943 J/kg Cº and…

A: we will be simply using the concept of calorimetry to solve this problem which is basically the…

Q: An office worker uses an immersion heater to warm 250 g of water in a light, covered, insulated cup…

A: Given:- Mass of water (m)=250g =0.250kg Time (t)=4 minutes=240 sec. Change in temperature=100c -…

Q: In one form of plethysmograph (a device for measuring volume), a rubber capillary tube with an…

A: Given:- A rubber capillary tube with an inside diameter of d = 1.41 mm is filled with mercury at…

Q: In a one-shell and two-tube heat exchanger, cold water with inlet temperature of 20°C is heated by…

A: Consider that the heat exchanger is completely insulated.   The temperature variation occurs in 1-D…

Q: What is the rate of energy dissipation for a 120 V 40 W light bulb?

A: Recall P=IV Also V=IR Pdissipation=I2R

Q: The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m³, and…

A: Answer : 0.25mm Solution -

Q: 17.26 · In an effort to stay awake for an all-night study session, a student makes a cup of coffee…

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Q: Hot Water Heater Due this Friday, Nov 18 at 11:59 pm (EST) A family comes home from a long vacation…

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Q: A resistor is wired to a battery in a circuit and dissipates a power P1 as heat. A second resistor,…

A: Dissipated power P =I2R where I is the current flowing R is the resitance In first case, where only…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 7.70 A. Assuming the…

A:

Q: A 2.5 kW heater element from a dryer has a length of 59 cm. If a 12 cm section is removed, what…

A: Given values:Power of heater element, P = 2.5 KwInitial length of dryer, Li = 59 cm = 0.59 mFinal…

Q: Jessa took 30 minutes to walk to her grandmother's house, a total of 3.3 km. what is her velocity in…

A: Given data:  Time (t) = 30 minutes Displacement (Δx) = 3.3 km Required: Velocity (v)

Q: energy in kilojoules does the device produce

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Q: An electric kettle is rated with a Power 2.2kw. It is filled with 1.5kg of water at 12°c as measured…

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Q: Digital thermometers often make use of thermistors, a type of resistor with resistance that varies…

A: Given:-  The resistance of the resistor is R1 = 76.2 Ω at the 0°C The resistance of the resistor is…

Q: What is the power (in W) of the heater.

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Q: An immersion heater used to boil water for a single cup of tea plugs into a 120 V outlet and is…

A: The voltage of the heater is .The power of the heater is .The mass of the mug is .The initial…

Q: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. Assume constant…

A: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. cross sectional…

Q: Current has a heating effect due to the law of conservation of energy. A sealed container containing…

A: Given data, Mass of the liquid = m Latent heat of the liquid = Lv Voltage of the supply = V Current…

Q: Two cylindrical resistors R1​ and R2​ made from the same material are connected in parallel in a…

A: Given both cylinders are made from the same material. Therefore resistivity  ρ  is the same for…

Q: A 0.253-kg coffee mug is made from a material that has a specific heat capacity of 944 J/kg C° and…

A: The total heat energy taken by the cup and water Q=mcupCcup∆T+mwaterCwater∆T=mcupCcup+mwaterCwater∆T…

Q: Two lightbulbs have cylindrical filaments much greater in length than in diameter. The evacuated…

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Q: An immersion-type heating coil with a resistance of 13 ohms is connected to a 120 V outlet and…

A: Given:  R = 13 ohm  V = 120 V  mass, m = 250 mL = 250 g = 0.25 kg  T = 10 degree C  T' = 100 degree…

Q: An immersion heater used to boil water for a single cup of tea plugs into a 120 V outlet and is…

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Q: Pllleeaasseeee sollvee thiss question

A: We know electric power in a current carrying wire is given as P=VIfrom Ohms law we have,V=IRhence ,…

Q: pacity of 2.44 joules per gram kelvin and a specific gravity of 0.7893. Assume the initial…

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Q: A 0.298-kg coffee mug is made from a material that has a specific heat capacity of 921 J/kg C° and…

A: The knowns in this problem are: mass of the coffee mug (m1) = 0.298 kg, specific heat capacity of…

Q: A 4μF conductor is charged to 400 V and then its plates are joined through a resistance of 1kQ. The…

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Q: What is the required resistance of an immersion heater that increases the temperature of 1.50 kg of…

A: Write the given values with the suitable variables. m=1.50 kgT1=10 °CT2=50 °Ct=10 min=600 sV=110 V…

Q: A small electric immersion heater is used to heat 98g of water for a cup of instant coffee. The…

A: The mass of water to be heated, m = 98 g = 0.098 kg. The rate with which the heater converts…

Q: The heating element of a coffeemaker operates at 120 V and carries a current of 7.70 A. Assuming the…

A: Given information: The voltage at which the coffee maker works (V) = 120 V The current it carries…