Answers: 3
Physics, 21.06.2019 20:30
Asmall metal bar, whose initial temperature was 10Ā° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70Ā° c if it is known that its temperature increases 2Ā° during the first second? (the boiling temperature for water is 100Ā° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98Ā° c? (round your answer to one decimal place.)
Answers: 2
Physics, 22.06.2019 12:40
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
Physics, 22.06.2019 18:30
Asmall grinding wheel has a moment of inertia of 4.0Ć10ā5 kgā
m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
Answers: 3
Physics, 22.06.2019 21:10
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius ķ
=0.381meters and mass ķ=3.1ķķ. initially ķ"is on the ground and ķ#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of ķ#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
This picture shows the weather station model at a location. 28 045 12 What type of weather is expect...
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