Consider a perfectly insulated cup (no

Physics

1 answer:

ValentinkaMS [3.4K]2 months ago

7 0

Answer:

When ice is subjected to heat, it melts; however, the temperature remains constant at 0◦ C.

Explanation:

Solution

The heat supplied by the heater is solely utilized for the melting of the ice, thus maintaining the temperature at 0◦ C.

Once all the ice has liquefied, the temperature of the resulting water will start to rise over time.

Note: please see the attached document with solutions featuring diagrams related to this explanation

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A physicist is constructing a solenoid. She has a roll of insulated copper wire and a power supply. She winds a single layer of

ValentinkaMS [3465]

The power required is P = 105.44 W. From the provided data: Diameter D = 10 cm, Length L = 60 cm, wire diameter d = 0.1 cm, magnetic field strength B = 6.4 mT, and resistivity of copper ρ = 1.7 x 10⁻⁸ Ω·m. The turns in the solenoid N can be found using N = L/d, thus N = 60/0.1 = 600 turns. The total length of the wire is Lc = πDN, calculated as Lc = 3.14 x 0.1 x 600 equaling 188.4 m. Current I is determined as I = 5.09 A, and the resistance R is identified as R = 4.07 Ω. The power P is then calculated using the formula P = I²R, thus P = 5.09² x 4.07 W results in P = 105.44 W.

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23 days ago

How can philosophy help you become a productive citizen<br>

Ostrovityanka [3204]

Answer:

The field of philosophy examines the essence of truth and knowledge. It acts as a compass for individuals in identifying what is truly important and worthwhile in life. ... This understanding provides clarity and enhances productivity by weighing the significance of various aspects.

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2 months ago

For years, space travel was believed to be impossible because there was nothing there Rockets could push off in space in order t

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Rockets do indeed accelerate in the vacuum of space, something that has been possible for an extended period.

Response: Option D

Clarification:

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The remaining thrust needed for the rocket's journey in space comes from the combustion of fuel in its chambers. The fuel's combustion in designated compartments propels the rockets onward. Therefore, the belief that space exploration was impossible previously due to lack of propulsion mechanisms is a complete misconception.

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1 month ago

Lucy took 3 hours to cover 2/3 of a journey. She covered the remaining 60 miles in 2 hours. What was the average speed for the w

serg [3582]

The accurate answer is 36 miles per hour

Explanation:

To calculate the average speed, start by determining the total distance and total time Lucy traveled, as average speed is the total distance divided by the total time.

Total Distance

Lucy is known to have covered 2/3 of the total distance initially, later finishing the journey with 60 miles. Therefore, the last segment of 60 miles corresponds to 1/3 of the total distance.

$\frac{2}{3} + \frac{1}{3} = \frac{3}{3}$ (Total distance)