Why is there a danger of explosion in places like coal mines where there are large quantities powdered, combustile material

Under which one of the following circumstances will heat transfer occur via convection? Group of answer choices Convection occurs within metal objects. Convection only occurs in non-metallic solids. Convection occurs only within a vacuum.

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The specific heat capacity of ice is about 0.5 cal per gram per degree Celsius. Suppose it remains at that value all the way to absolute zero. Determine the quantity of heat needed to change a 1 g ice cube at absolute zero to 1 g of boiling water.

A 0.44 A current is passing through a 124-Ω resistor. What is the power (in W) dissipated in the resistor? Do not include units with your answer.

What scientific method is used to record the strength of earthquakes in an area

Match the term to the correct description. ~A type of circuit where part of the loop is broken. ~The flow of electrons. ~A loop that creates a pathway for electricity to follow. ~A type of circuit with only one path for the electricity to follow.

What is the mass of an object that is accelerating at 10 m/s^2 when a force of 2,386 N is exerted

According to the U. S. Green Building Council, what percentage of the world's energy use and greenhouse gas emissions can be attributed to buildings?

Magnets are often fitted to the doors of refrigerators and cupboards WHY?

Which data set has the smallest standard deviation? A. 7, 8, 89, 1005, 23400, 5, 3 B. 1000, 1001, 1002, 1000, 1001, 1001 C. 55, 90, 34, 78, 15, 20, 19 D. 1, 9, 120, 9, 1, 1, 9