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On its highest power setting, a microwave oven increases the temperature of 0.450 kg of spaghetti by 45.0°C in 140 s.(a) What was the rate of power absorption by the spaghetti, given its specific heat is 0.900 kcal/kg·°C? (b) Find the average intensity of the microwaves, given they are absorbed over a circular area 20.0 cm in diameter.(c) What is the peak electric field strength of the microwave? (d) What is its peak magnetic field strength?
a wooden crate of mass 25 kg is sitting on a horizontal cement floor. then one end of a horizontal pulley is attached
A satellite has a mass of101kg and is located at2.03106m above the surface of Earth. What is the potential energy associated with the satellite at this location
a potential difference of 90 mv exists between the inner and outer surfaces of a cell membrane. the inner surface is
A truck moving with a speed of 25.4 m/s strikes a parked car. During the collision the truck and car stick together and slide to a stop together. How far does the truck/car combination slide
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
Jill of the Jungle swings on a vine 6.9 m long. What is the tension in the vine if Jill, whose mass is 63 kg, is moving at 2.4 m/s when the vine is vertical
Two particles lie on an x axis, particle 1 at x = 1 m and particle 2 at x = 2 m. what happens to the center of mass of the two-particle system
When a 58-g tennis ball is served, it accelerates from rest to aspeed of 44 m/s. The impact with theracket gives the ball a constant acceleration over a distance of42 cm. What is the magnitude of the netforce acting on the ball?
Given the standard molar volume of gas is 22.71 L/mol at a temp of 273.15K and a pressure of 1 bar, what is the value of the ideal gas constant
In an experiment 70 gram of ice at 0 degrees Celsius is dropped into 300 gram of water at 50 degrees Celsius. what is the final temperature of thermal equilibirium
The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Calculate the pressure due to the ocean
Describe what are the (a) magnitude and (b) direction of the boat's velocity relative to the ground? (c) How long does the boat take to cross the river?
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