Answer:
D. It is converted into kinetic energy.
Explanation:
When a book is dropped from a desk to the floor, the potential energy of the book is converted to kinetic energy as it falls.
- Potential energy of a body is the energy due to the position of the body.
- At a particular height, the potential energy is maximum.
- A body with mass and moving with velocity will have kinetic energy
- As the book drops through the height, to conserve energy, the potential energy is converted to kinetic energy.
The number of feet the track star ran is 4921.26 feet
<h3>Conversion scale </h3>
We can convert meter to feet by using the following conversion scale:
0.3048 meter = 1 feet
<h3>How to cconvert 1500 meters to feet</h3>
The following data were obtained from the question:
- Distance (in meter) = 1500 meter
- Distance (in feet) =?
We can convert 1500 meter to feet as illustrated below:
0.3048 meter = 1 feet
Therefore,
1500 meter = (1500 meter × 1 feet) / 0.3048 meter
1500 meter = 4921.26 feet
Thus, 1500 meter is equivalent to 4921.26 feet
Learn more about conversion:
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Answer:
Specific heat of substance = 0.897 J/g.°C
Explanation:
Given data:
Specific heat of substance = ?
Mass of substance = 25.0 g
Heat absorbed = 493.4 J
Initial temperature = 12.0 °C
Final temperature = 34°C
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 34°C -12.0°C
ΔT = 22°C
493.4 J = 25 g ×c× 22°C
493.4 J = 550 g.°C ×c
c = 493.4 J / 550 g.°C
c = 0.897 J/g.°C
I think it's the Terminals
