A total of 233 electrons pass a point in a circuit in 45 minutes. What is the current?

Answer: The given statement is false.

Explanation:

Kinetic energy is defined as the energy obtained by an object because of its motion.

For example, moving a pulley on the road.

Whereas energy of an object obtained due to its position is known as potential energy.

For example, lifting a book from table to the shelf shows position of the book has changed.

Therefore, we can conclude that the statement kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf, is false.

Answer:

anong grade po. yan?

seven po ba yan

When a piece of aluminum foil is taken out of the oven and cools from 100C to 50C. Then the change in temperature is 50°C.

What is temperature?

Temperature is a fundamental concept in physics that describes the degree of hotness or coldness of an object or system. It is a measure of the average kinetic energy of the molecules or particles that make up the object or system.

In other words, the temperature is a measure of how fast or slow the particles are moving. When the particles move faster, the temperature is higher, and when they move slower, the temperature is lower. Temperature is commonly measured using a thermometer, which is a device that detects changes in a physical property of a material, such as its volume, pressure, or electrical resistance, that vary with temperature.

The unit of measurement for temperature is the Kelvin (K) scale, although Celsius (°C) and Fahrenheit (°F) scales are also commonly used. The Kelvin scale is an absolute temperature scale, where 0 K represents the lowest possible temperature, known as absolute zero. The Celsius and Fahrenheit scales are relative scales that are defined by the freezing and boiling points of water at standard atmospheric pressure.

Here in the Question,

The change in temperature is 30 because the change in temperature is calculated by subtracting the initial temperature from the final temperature. In this case, the initial temperature is 100°C and the final temperature is 50°C. So the change in temperature is:

Change in temperature = final temperature - initial temperature

Change in temperature = 50°C - 100°C

Change in temperature = -50°C

The negative sign indicates a decrease in temperature, which is expected as the aluminum foil cools down from the higher initial temperature to the lower final temperature.

Therefore, it is common practice to report the absolute value of the change in temperature, which in this case is 50°C.

To learn more about the 2nd law of thermodynamics click:

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Answer:

50°C

Explanation:

The change in temperature is basically the difference between the initial temperature to the final temperature. So change in temperature will be:

100°C - 50°C = 50°C