Question

Short and simple question. :)
Which scientific term is defined as the rate at which work is accomplished?
A. energy
B. mechanics
C. potential
D. power

Answer 1

@HeroOfLove111 @hotdancingbabe14

Answer 2

the answer is energy and tht was a really easy question

Answer 3

How much work is accomplished when a force of 250 N pushes a box across the floor for a distance of 50 meters?
A. 5 N
B. 12,500 J
C. 12,500 N
D. 5 J
@HeroOfLove111

Answer 4

You've been given the wrong answer. The rate at which work is done is power: work/time. The answer to your first question is D.

Answer 5

yeah work is a measure of energy and
power=work/time

Answer 6

and workdone=force *distence
for ur second qus

Answer 7

So the first one is D?

Answer 8

As for your last question, work can be defined as follows:\[W=Fd\]where W is work; F is force; and d is the distance over which the force is applied. Units of work are:\[[W]=\frac{ kg∙m ^{2} }{s ^{2} }=Joules\]

Answer 9

Yes, the first one is D.

Answer 10

so the answer is power and srry girl wasn't paying attention

Answer 11

s'ok what about the second one? B or C

Answer 12

@PsiSquared B or C?

Answer 13

\[W=Fd=\left( 250N \right)∙\left( 50m \right)\]

Answer 14

Sorry I mean B or D? D?

Answer 15

@PsiSquared @HeroOfLove111

Answer 16

the answer is B

Answer 17

Do you have a calculator? If so use it to multiply the numbers i have shown in the equation on my previous response.

Answer 18

B? @PsiSquared

Answer 19

yes it tis be B

Answer 20

According to the scientific definition, which is not an example of work?
A. lifting a book off a desk
B. pushing against a car without moving it
C. pulling socks out of the dryer
D. opening the refrigerator door

Answer 21

r u on k12?

Answer 22

yes, todays my last day to gt everything in and im beyond freaking out

Answer 23

I did this last year and wht do u mean? did u finish ur scantrons? is today the last day???

Answer 24

and tht is another easy one its B

Answer 25

Yes, I finished my Scrantons. These are all lesson assessments, the equivalent to homework. :P

Answer 26

im on the k12 thing too, whts ur real name?

Answer 27

Er....Little personal....

Answer 28

im serious did u go for pass testing

Answer 29

and where?

Answer 30

pass testing? what that? I go to a online school that uses k12's ciriculam.

Answer 31

yeah its the online k12 school, u were supposed to go pass testing

Answer 32

Since work as defined above requires moving something, pushing against the car without moving it is not work. B.

Answer 33

What is a simple machine?

A. any object that makes work easier when a single force is applied by changing the strength or the direction of that force

B. any combination of objects that magnifies the input force so that the output force is greater

C. any object or group of objects, that when connected to a source of electricity, make work easier

D. any object, that when connected to a fossil fuel source, makes work easier

Answer 34

the answer is A

Answer 35

I have to go so I can finish up for school today

Answer 36

What has changed when a gardener uses a lever to lift a rock, instead of lifting it by hand?
A. Less force is applied over a shorter distance.
B. More force is applied over a longer distance.
C. More force is applied over a shorter distance.
D. Less force is applied over a longer distance.

Answer 37

d

Answer 38

anymore????

Answer 39

Which describes the relationship between potential and kinetic energy when a pole vaulter's pole has reached its maximum bend point?

A. All the energy is elastic potential energy, and none of the energy is kinetic energy.
B. All the energy is gravitational kinetic energy, and none of the energy is potential energy.
C. All the energy is gravitational potential energy, and none of the energy is kinetic energy.
D. All the energy is elastic kinetic energy, and none of the energy is potential energy.

Answer 40

wow I forgot tht one srry

Answer 41

kk

Answer 42

Two iron blocks are the same size. One block has a higher temperature than the other. Which describes the thermal energy of these blocks?

A. Lower temperature means greater kinetic energy, which means the colder block has greater thermal energy.

B. Higher temperature means greater kinetic energy, which means the warmer block has greater thermal energy.

C. Higher temperature means greater potential energy, which means the warmer block has greater thermal energy.

D. Lower temperature means greater potential energy, which means the colder block has greater thermal energy.

Answer 43

http://www.slideshare.net/tufdaawg/chapter-12-thermal-energy look at this website

Answer 44

I don't have time to look through all of that.....Sorry.