41
67
aura
PINEAPPLE
100
which will make you tired by doing no work?
A:mowing your yard by pushing your lawn mower.
B:riding your bicycle uphill to school.
C:pushing on your bedroom wall for 30 minutes.
D:running up 10 flights of stairs.
What is (D)
100
Let’s see if you can bounce back from this one! Which is an example of elastic potential energy?
A:a basketball at the top of its arc
B:a basketball at the top of its arc
C:a compressed spring
D:an unlit candle
What is (C)?
100
What is potential energy
A object gaining energy while at rest
100
DAILY DOUBLE
The law of conservation of energy says:
200
A gallon of paint sitting on top of a 4.0 m step ladder has a mass of 5.0 kg. How much potential energy does it have? (Use kg⋅m2/s2)
What is 200J
200
It’s a long fly ball to center field! Where is the gravitational potential energy the highest?
What is the highest point of the ball?
200
A POT OF WATER IS
A:kinetic energy
B:potential energy
C:aquatic energy
D: none of the above
D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D D
200
BONUS POINTS
+10
300
Do you have the energy to answer this question? Which of the following only has potential energy?
A:racecar moving on a track
B:racecar fuel
C:flag waving when you win the race
d:pit crew using a jack to lift the car to change the tire
what is (B)
300
which equation for force is correct?
F=W×dF=W×d
F=m⋅a
F=W/d
F=m×g×h
What is F=m X a
300
FUN QUESTION (BASICALLY FREE POINTS) ANSWER UNDER 30 SECONDS!
A B C D E F G H I J K L M N O _ Q R S T U V W X Y Z
WHAT IS p
300
LOSE POINTS
-10
400
A machine outputs 500 J of work when 800 J of work are put into it. What is the efficiency of the machine?
A:62.5
B:23
C:41
D:54.34
What is (A)
400
which is the equation for power?
P=21mv2
P=mgh
P=FdP
P=E/t
what is
P=e/t
400
does hot water freezes faster than cold water
YES
400
What energy is being transferred in this photo
Gravitational potential energy to kinetic energy
500
T/F
a compound machine contains at least two simple machines.
What is true?
500
What is kinetic energy
when energy is used by a action happening.
500
are bananas radioactive
Bananas are mildly radioactive because they contain a small amount of the naturally occurring radioactive isotope potassium-40. However, the radiation dose from a single banana is very small, about millirem or 0.10.1 microsieverts, which is negligible and not harmful. This is a tiny fraction of the natural background radiation humans are exposed to daily
500
LOSE 15 POINTS!
WOMP WOMP WOMP WOMP