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The heating element of an electric broiler dissipates 2.8 kW of power when connected to a potential difference of 120 V.
a. what is the resistance of the element?
b. How much current does the broiler draw? use two ways to find out, and verify your answer.
An underground gasoline tank at 46F can hold 1500 gallons of gasoline. If the driver of a tanker truck fills the under-ground tank on a day when the temperature is 88F, how much (according to his gauge on the truck) can he pour in?
q1. in a head-on collision a car stops in 0.24 from a speed of 25. the driver has a mass of 74 and is fortunately
A 97-kg astronaut and a 1100-kg satellite are at rest relative tothe space shuttle which is located 125 m away. how long does it take the astronaut to reach the shuttle
A recovery vehicle is towing a broken down lorry, of mass 42 tonne, up an incline of 1 in 10. Both vehicles start from rest and accelerate constantly up the incline at 0.1m/s2. If the resistance to motion (not the gravitational component) is:-
George just graduated from college and is going on his first job interview. He has learned that there are two other candidates. Because of the information he has learned about the serial position effect, George asks to be either the first or the last..
A factory robot drops a 10 kg computer onto a conveyor belt running at 3.1 m/s. How far is the computer dragged before it is riding smoothly on the belt
A beam of 8.61 MeV protons is incident on a target of 2713Al. Those protons that collide produce the reaction shown below. determine the kinetic energy of the emerging neutrons
The shuttle Galileo has experienced engine trouble on her approach to Star Fleet Command and has landed in San Francisco bay. Estimate what is her average density
In this problem you will determine the distance to Jupiter by applying F=ma for circular orbits. By observing Jupiter we can determine that it takes 11.895 years to orbit the Sun. determine the distance of Jupiter from the Sun
Tobogganed coasts down a hill and then goes over a slight rise by speed 1.5 m/s. The top of this rise can be taken to be a circle of radius 3 m. The toboggan and occupant have a combined mass of 110 kg.
Give a definition of "laissez faire" economics. (An economic doctrine that opposes government regulation of or interference in commerce.) Explain why do you think this was the dominant political and legal view in the 1800s and early 1900s?
two plates of radius R are separated by a distance 2h.the top plate rotates with velocity w. find the velocity as a function of radius r and and height z
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