subject
Physics, 06.03.2021 09:00 RainbowPieWasHere

Which would be the most appropriate description of how energy is distributed when a torch is turned on? A70% light energy, 30% thermal energy
B70% thermal energy, 30% electrical energy
C65% light energy, 30% thermal energy
D40% thermal energy, 55% light energy

1)Which of the following is a form of kinetic energy?
AMotion
BChemical
CElastic
DNuclear

2)The energy we receive from the sun includes:
Aelectrical and sound energy.
Bthermal and nuclear energy.
Celectrical and light energy.
Dthermal and light energy.

3)The petrol needed to make a car move is a form of:
Akinetic energy.
Bchemical potential energy.
Cthermal (heat) energy.
Delastic potential energy.
Egravitational potential energy.

4)When a bicycle skids to a stop, its kinetic energy is mostly transformed into:
Aheat and sound.
Bpotential energy.
Csound energy.
Dheat and light.

5)The faster an object moves:
Athe more potential energy it has.
Bthe more kinetic energy it has.
Cthe faster its particles vibrate.
Dthe cooler it gets.

6)When you clap your hands, the kinetic energy is transformed into:
Aheat and light.
Bheat and potential energy.
Csound and heat.
Dsound and elastic potential energy.

7)When you place a metal saucepan on the heating element of a stove, heat is transferred from the element to the saucepan by:
Areflection.
Bconvection.
Cconduction.
Dradiation.

8)Which of the following can be described as being luminous :
AStreetlights (turned on)
BA road sign
CThe moon
DWater

9)In the burning of fireworks during New Year displays, chemical potential energy is converted into:
Aheat, light and sound energy.
Blight and sound energy.
Csound and heat energy.
Dgravitational potential energy and light.

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 21:00
Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.
Answers: 1
question
Physics, 22.06.2019 22:00
Which best term to describe a chemical reaction that absorbs energy from its surroundings? a.thermal conductor b.thermal insulator c.endothermic d.exothermic
Answers: 1
question
Physics, 23.06.2019 01:20
Afisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.700 m. the fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. a. how fast are the waves traveling? b. what is the amplitude a of each wave?
Answers: 1
question
Physics, 23.06.2019 08:30
List and describe three ways that humans can change ecosystems and three ways that humans can protect ecosystems.
Answers: 2
You know the right answer?
Which would be the most appropriate description of how energy is distributed when a torch is turned...
Questions
Questions on the website: 13722361