Question

Can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging?
A.electrical energy B.nuclear energy C.electromagnetic energy D.kinetic energy(I PICK D) 4.Which is the type of energy available in food? A.electromagnetic B.gravitational C.chemical(I PICK C) D.kinetic 5.Dan does 188.0 J of work raking leaves. If the rake does 128.0 J of work, what is the efficiency of the rake?
A.68.1 percent(I PICK A) B.147.0 percent C.60.0 percent D.316.0 percent 6.Which type of energy transformation is taking place when natural gas is used to heat water?
A.chemical energy into thermal energy(I PICK A) B.thermal energy into mechanical energy C.mechanical energy into electromagnetic energy D.electromagnetic energy into chemical energy 7.The energy associated with the motion and position of an object is called
A.kinetic energy. B.potential energy. C.gravitational potential energy. D.mechanical energy.(I PICK D) ****I ACTUALLY HAD 2 CHOICES FOR 7 SO MY OTHER ANSWER IS A*****

Answer 1

2 is B.  3 is D.   4 is C.   I think 5 is A.   6 is A.   7 is D.   I think you are all correct. Good Luck!

Answer 2

Answer:

2. B. energy

3. D.kinetic energy

4. C. chemical

5. A.68.1 percent

6. A.chemical energy into thermal energy

7. D.mechanical energy

Explanation:

2. Energy is  the ability of matter to produce work in the form of movement, light, heat, etc.

3.  The kinetic energy of a body is that energy it possesses due to its movement.

4 .Chemical energy is the energy stored in the bonds of chemical compounds (atoms and molecules).

5. Efficiency can be calculated as (128J/188J)*100= 68%

6. Chemical energy is defined in item 4 and thermal energy is a type of energy that bodies possess when exposed to the effect of heat. It is precisely what produces that the atoms that make up the molecules are in constant motion either moving or vibrating.

7. Mechanical energy is the energy that bodies present because of their movement (kinetic energy), and their situation with respect to another body, usually the earth.