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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 small glass bead charged to 7.4nc is 4.0cm from a thin uniformly charged 10--cm long glass rod. the bead is repelled
65kW is to arrive in a town over two 0.100Ω lines. Estimate how much power is saved if the voltage is steped from120V to 1200V and then downed downed again rather than transmittingat 120V
mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy.
A 1500 kg vehicle is making a circular turn on a flat roadway. What is the max speed the vehicle can travel before it starts to slide
A car accelerates uniformly from rest and reaches a speed of 23.7 m/s in 8.43 s. The diameter of a tire on this car is 51.9 cm. What is the final angular speed of a tire in revolutions per second
Astronaut Buzz throws a ball horizontally on the planet SeeSUN with a speed of 5.25m/s. the ball falls through a vertical distance of 1.92m and lands a horizontal distance of 16.4m from the astronaut. what is the acceleration due to gravity on SeeSun..
Recent measurements show that the black hole at the center of the Milky Way galaxy, which is believed to coincide with the powerful radio source Sagittarius A*, What is the maximum radius of this black hole
Consider a parallel-plate capacitor constructed from two circular metal plates of radius R. The plates are separated by a distance of 1.7 mm. What radius must the plates have if the capacitance of this capacitor is to be 1.8 µF?
a rocket is moving at 0.4c toward a rocket which is moving at 0.5c. what is the relative speed of one rocket as seen from the other
You are visiting NASA and are watching a test rocket launch. You estimate that at launch the angle of elevation of the rocket is 60 degress, calculate The altitude of the rocket when the engine cut out
A 10.0 kg object starting from rest falls through a viscous medium and experiences a resistive force R = - b v, Find the terminal speed of the object
Consider the ballistics pendulum experiment. If M=1kg and m=0.1kg, and the velocity of the bob-ball system right after the collision is Vf=2m/s, what was the initial velocity of the ball before it hit the bob
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