Mathematics, 16.12.2020 04:50, tay8568
In an experiment, equal amounts of water and sand were heated under a lamp. The initial and final temperatures of each were recorded. A partial record of the temperature is shown.
Experimental Record
Substance Initial Temperature Final Temperature
Sand 20 °C 26 °C
Water 20 °C ?
Which statement about the final temperature of the water is correct?
1. It will be less than 26 °C as sand has a relatively higher specific heat than water.
2. It will be less than 26 °C as water has a relatively higher specific heat than sand.
3. It will be more than 26 °C as sand needs relatively higher energy than water to raise its temperature.
4. It will be more than 26 °C as water needs relatively higher energy than sand to raise its temperature.
Answers: 2
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Mathematics, 21.06.2019 19:00, alkaline27
Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m
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Mathematics, 21.06.2019 23:00, tfyvcu5344
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Answers: 2
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