A kilogram of water goes from 90 degrees Celsius to 10 degrees Celsius in a period of 2 hours. If the specific heat of water is 4 kilojoules per kilogram per degree Celsius, how much heat has the water lost?

Q: A large wine company owns 125-wine barrels that hold a capacity of 3,875 gallons each. How many…

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Q: What is the cost per mile to drive a van that has a gas mileage of 12.7 miles per gallon and the…

A: From the question it is given that Distance covered = 1 mileMileage of van = 12.7 miles per…

Q: for any wave, the speed equals the wavelength times the frequency. If a photon of visible light has…

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Q: What is the total resistance of a circuit if the battery is 1.5 V and the current is 100 mA?

A: according to ohm law current across the resister is directly proportional to the potential…

Q: A sedentary person requires about 6 million joules of energy per day. This rate of energy…

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Q: What is the wavelength of a sound wave traveling through the air at sea level that has a frequency…

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Q: A wall is 300 square feet. A gallon of paint covers 110 square feet. What is an appropriate…

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Q: You have a raft made out of 8 logs, each with a diameter of 30 centimeters, length of 2 meters, and…

A: The mass per unit volume of an object is defined as the density of the object, to solve the given…

Q: Assuming that there are 5 × 1013 cells in the humanbody and that ATP is turning over at a rate of…

A: The watts consumed by human body can be given by Watts consumed=ATP molecules turnover/sec×number of…

Q: The frequency of a note that is one octave higher than a note of 1024 Hz is

A: An octave can defined as interval between two points where the frequency at the second point is…

Q: How much energy is used to light a 45 Watt light bulb for 10 hours?

A: Given, P=45 Watt t = 10 Hours We know that, E = P*t   = (45 Watt) *(10 h)    = 45 Watt ((10 h) (60…

Q: How much does it cost to light a 300-W lightbulb for 30 days if the cost of electricity is 7¢/kWh?

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Q: Ninety-five percent of light incident on a mirror is reflected. How much light is finally reflected…

A: Given:95% of incident light is reflected by the mirror.There is a setup of four such mirrors placed…

Q: A helium balloon is at 105 kPa. As the balloon rises the pressure drops to 95 kPa and its new volume…

A: Given values:- Initial pressure,(P1)=105 KPa ----(1) Final pressure,(P2)=95 KPa -----(2) Final…

Q: A tiny space inside a computer chip has been measured to be 2.56x10^-6 meters wide, 1.4x10^-7 meters…

A: Given: the dimension of the space in the computer chip is: width(b) =  2.56x10-6 m length(l) =…

Q: What is the speed of a wave with frequency 100 hz and wavelength of 2 m?

A: GivenFrequency f = 100HzWavelength λ = 2m

Q: A change in temperature of 50 degrees Celsius is equal to a change of?

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Q: If the annual (8 hours per day) cost to run a 400-W computer is ₱12,000.00, how much does the…

A: Given data:  Daily uses = 8 hours per day Power (P) = 400 W = 0.400 kW Total cost of running…

Q: What is the rate of acceleration of a 2,000-kilogram truck if a force of 4,200 N is used to make it…

A: Given, Mass of truck=2000 kg Force applied F=4200 N Let  acceleration of Truck is a m/s²

Q: A train moves at a constant speed and travels 6 miles in 4 minutes. What is the speed in miles per…

A: Given, train moves at a constant speed Distance travelled = 6 miles Time taken to travel 6 miles = 4…

Q: Tungsten has a density of 19,300 kg/m3. If you have a cube of tungsten that measures 5 cm on a side,…

A: Given, a Tungsten has a density of ρ=19,300 kg/m3. If you have a cube of tungsten that measures l=5…

Q: A wave has a frequency of 66 Hz and a wavelength of 1.1 meters. What is the speed of this wave?

A: The frequency of a wave is defined as the number of waves passing through a point in space per unit…

Q: A balloon with a volume of 2.0 L is filled with a gas at 3 atmospheres. If the pressure is reduced…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: If a wave has a speed of 1500 m/s and a frequency of 11 Hz, what is its wavelength?

A: Given data : Wave speed=V Frequency=f   To find : Wavelength

Q: If I make a solution by adding water to 75 mL of ethanol until the total volume of the solution is…

A: Given data: Volume of ethanol, V1=75 mL Volume of solution, V2=375 mL Volume of water added: V=V2-V1…

Q: What is the wavelength, in the unit of meters, of a wave propagating at the speed of 1,241 m/s with…

A: We know that: The speed is v=1241 m/s The frequency is f=56 kHz Mathematically, the wavelength of…

Q: Suppose you have one cubic meter of gold, two cubic meters of silver, and six cubic meters of…

A: Given the volume of gold, silver and aluminum as follows; one cubic meter of gold, two cubic meters…

Q: At one atmosphere, a cylinder with movable piston contains 2,000 milliliters of gas. If the pressure…

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Q: A sample of gas has a volume of 12 L and a pressure of 200 kPa. If the pressure of gas is increased…

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Q: Nine days ago the area covered by the piece of bread was 3 sq inches. Total, the mould covers 9 sq…

A: The area covered by the mold nine days ago= 3 square inches. The area covered by the mold in the…

Q: If a wave has a wavelength of 15m and a frequency of 1.500 KHz, what is its speed?

A: Given that, The wavelength of a wave, λ=15 m Frequency of a wave, f = 1.5 kHz We need to find the…

Q: How many joules of electrical energy are converted into heat and light when a 50 W lamp is lit for 2…

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Q: The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

A: Frequency :- In one second the number of vibration bring out is known as frequency. Given, Frequency…

Q: What is the average power consumption in watts of an appliance that uses 0.75 kWh of energy in one…

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Q: If a student found the density of 10 glass beads to be 2.50 g/ml, what would be the density of 1…

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Q: What is the mass, in kg, of a 10 cm x 10 cm x 10 cm cube of pure iron?

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Q: You run forward, pulling a sled behind you with a force of 250 N. If you expend 2,500 Joules, how…

A: Given data:  Force on sled (F) = 250 N Work done (W) = 2,500 J Displacement (d) =?

Q: How much resistance will allow a voltage of 6 V to produce a current of 0.006 Amperes?

A: Given data: Voltage, V= 6V Current, I= 0.006 A We have to find the resistance.

Q: How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

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Q: What is the frequency of a wave that has a speed of 12 m/s and a wavelength of 15 m?  ____________

A: The expression for the frequency is,

Q: A metric ton is 1,000 kg, and a British ton is 2,000 lb. Which has the greater weight?

A: Given data:   Metric ton, W1=1000 kg   British ton, W2=2000 lb

Q: A boat (with a flat bottom) and its cargo weigh 6,200 N. The area of the boat's bottom is 3 m2. How…

A: Given data The weight of the boat and cargo is, W=6200 N The area of the bottom of the boat is, A=3…

Q: The air in a room has a mass of 50 kg and a specific heat of 1,000 J/(kg.degrees celcius). What is…

A: Given,  Mass of air in the room =50 kg Specific heat of air =1000 J/(kg.degrees celcius) We have to…

Q: A 100-watt light bulb is left on for 10 hours. Electricity is 10 cents per kilowatt-hour. How much…

A: The energy consumed E (in kWh) by bulb having power rating P (in kW), operating for time T (in…

Q: At zero degrees Celsius and one atmosphere (STP), the volume of a gas is 1,000 milliliters. If the…

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