An ice cube is placed in a microwave oven. Suppose the oven delivers 135 W of power to the ice cube and that it takes 35200 J to melt it.
a) How long does it take for the ice cube to melt? (Minutes)
An ice cube is placed in a microwave oven. Suppose the oven delivers 135 W of...
An ice cube is placed in a microwave oven. Suppose the oven delivers 115 W of power to the ice cube and that it takes 32200 J to melt it. How long does it take for the ice cube to melt?
Suppose that 900 W of radiation in a microwave oven is absorbed by 200 g of water in a very lightweight cup. How long will it take for the water to warm up from 10∘C to 80∘C? 9.
An ice cube with a mass of 0.0580 kg is placed at the midpoint of a 1.00-m-long wooden board that is propped up at a 46° angle. The coefficient of kinetic friction between the ice and the wood is 0.205. (a) How much time does it take for the ice cube to slide to the lower end of the board? s (b) If the ice cube is replaced with a 0.0580-kg wooden block, where the coefficient of kinetic friction between...
Die gnt of 425 nm. 2. A typical microwave oven uses radiation of wavelength 12.2 cm a. How many moles of photons of this radiation are required to raise the temperature of 500.0 mL of water from 25°C to its boiling point? b. A watt (W) is a unit of power the rate at which energy is delivered or consumed (Power (W) = Energy (J)/time (s) or 1 W= 1 J/s. If all the energy of a 700-W microwave oven...
An ice cube (m = 5 g, T = 0°C) is placed on a hot plate that give off heat at 1000 Watt. If all that heat goes into the ice, how long will it take the ice to melt? Ice heat of fusion is 3.33 x 10^5 [Joule/kg]?
w standing electromagnetic wave in a 610 W microwave oven. The oven has a length of 0.21 m and a square cross-section of side w = 0.40 m. The electric field is shown in red and the magnetic field in blue at one instant. The standing wave has 4 nodes in the interior of the microwave and both E and go to zero at the sides. The electric field reaches its peak magnitude on the cross-sectional area, A. Take the...
Some ice cubes at 0°C with a total mass of 441 g are placed in a microwave oven and subjected to 750. W (750. J/s) of energy for 5.00 minutes. (Assume all the energy of the microwave is absorbed by the water and no heat loss by the water.) (Enter your answer to three significant figures.) What is the final temperature of the water? C
Problem 1: Microwave vs. Toaster Oven Your friend considers himself a Hot Pockets connoisseur. He eats one every day and insists on cooking it in the toaster oven in order to get the perfect crispy crust. You’re trying to convince him that cooking them in the microwave would be more environmentally friendly. (a) Toaster oven: If it takes 28 minutes to cook a Hot Pocket in a 1400 W toaster oven, how much electricity (in kWh) does this consume every...
A cube of water 14 cm on a side is placed in a microwave beam having E0 = 15 kV/m . The microwaves illuminate one face of the cube, and the water absorbs 77 % of the incident energy. How long will it take to raise the water temperature by 44 ∘C? Assume that the water has no heat loss during this time.
A 200 g ice cube at -20 degrees Celsius is placed in 1.00 kg of water at 25 degrees Celsius in a 50 g aluminum calorimeter also at 25 degrees Celsius. A. How much heat does the ice cube absorb as it reaches its melting point? B. How much heat does the ice cube absorb as it melts? C. What is the final tempreature pf the mixture? D. How much heat does the water in the calorimeter lose as it...