A household refrigerator runs one-fourth of the time and removes heat from the food compartment at an average rate of 800 kJ/h.

Answer:

(1) En to n-1 = 0.55 eV

(2) En-1 to n-2 = 0.389 eV

(3) ninit =4

(4) L =483.676 ×10^-11 nm

(5) λlongest= 1773.33 nm

Explanation:

The comprehensive details regarding the answer are provided in the attached files.

To tackle this question we will apply the kinematic equations that describe the motion of a projectile, where both maximum height and distance traveled are defined. This scenario demonstrates a lion achieving a height (H) of 3m and covering a horizontal distance (R) of 10m. The equations governing this kind of motion are expressed as follows:

By dividing the two equations, we determine:

Plugging in the values for H and R yields:

After substituting \theta into the relevant equation, we find:

In conclusion, the mountain lion's launch speed upon takeoff is approximately 9.98m/s at an angle of 50.2°.

The responses would be:

C. Bubbles form

E. There is a change in color

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While the chosen answers are indicative of chemical reactions, if you are solely referring to the chemical reaction in your example, these two answers represent the only options.

A chemical reaction occurs when reactants create a new substance. Indicators of a chemical reaction include alterations in smell, color, and temperature. At times, precipitates may develop.

A. 

The absence of a defined volume in gases causes them to disperse throughout the air. 

If the position of an object is zero at a particular moment, this does not provide any indication about its velocity. It might simply be moving through that point, and you observed it exactly when it was at zero.