When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in her body for energy. One of the body parts that needs this energy is the heart, which beats due to electrical impulses. A byproduct of this glucose breakdown is the heat that warms her body and is later released.Which identifies the energy transformations that take place in Anna’s body as this process takes place?
A: Mechanical energy is converted to kinetic energy, which is then converted to potential energy.
B: Chemical energy is converted to thermal energy and electrical energy.
C: Electrical energy is converted to chemical energy and thermal energy.
D: Mechanical energy is converted to potential energy which is then converted to kinetic energy.
Answers
The correct answer is
B: Chemical energy is converted to thermal energy and electrical energy.
In fact:
- initially, the energy is contained in the molecular bonds of the glucose, inside the sugars that Anna is eating, and this energy is in the form of chemical energy
- Part of this energy is converted into the electrical energy that make the heart beating, and this energy is in the form of electrical energy
- The rest of the energy is converted into heat for the body, and this energy is in the form of thermal energy
Answer: B. Chemical energy is converted to thermal energy and electrical energy.
Explanation:
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Answers
Answer:The magnitude of the acceleration is
Explanation:
Final velocity of the ball falling down ,v = 33 m/s
Initial velocity of the ball ,u= o m/s
Time taken by the ball to reach the ground ,t = 3.4 seconds
Acceleration of the ball during the fall = a
Using first equation of motion:
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b. It is divided into a pair of fives.
c. It has a stressed syllable followed by an unstressed syllable.
d. It is present in both Italian sonnets and Shakespearean sonnets.
Answers
b). No. This choice doesn't mean anything.
c). No. This is the description of a trochee, not an iamb.
d). I don't know anything about Italian sonnets. But I do know that
Shakespeare used iambic pentameter, and the other choices have
been eliminated, so I'll go with this one. (the "multiple-guess" method)
Answers
Answer:
Civil engineers design major transportation projects. Civil engineers conceive, design, build, supervise, operate, construct and maintain infrastructure projects and systems in the public and private sector, including roads, buildings, airports, tunnels, dams, bridges, and systems for water supply and sewage treatment.
- Atoms are not divisible into smaller particles.
- It is impossible to define the mass of an atom.
- The atom contains no particles that have a neutral charge.
Answers
Answer:
- The positive charge in an atom is concentrated in one location.
Explanation:
In Rutherford's experiment when alpha particles are projected towards the gold foil then he observed that major proportion of the alpha particles are moved out undeviating.
This shows that alpha particles which are positively charged are not repelled by other positive charge of nucleus as it is concentrated at small part of atom
because very few alpha particles are reflected back at 180 degree so he concluded that nucleus charge is concentrated at very small space
and that part is termed as nucleus.
so correct answer is
- The positive charge in an atom is concentrated in one location.
The positive charge in an atom is concentrated in one location.