1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Archy [21]
3 years ago
13

You did 150 joules of work lifting a 120 -N backpack.

Physics
1 answer:
olasank [31]3 years ago
6 0
You did 150.j of work lifting a 120.N back
You might be interested in
Mercury has one of the lowest specific heats. This fact added to its liquid state at most atmospheric temperatures make it effec
UNO [17]

The specific heat of mercury is 149.4 J/(kgK)

Explanation:

When a substance is supplied with an amount of energy Q, its temperature increases according to the equation:

\Delta T=\frac{Q}{mC_s}

where

\Delta T is the increase in temperature

m is the mass of the sample

C_s is its specific heat capacity

For the sample of mercury in this problem we have

Q = 275 J

m = 0.450 kg

\Delta T = 4.09 K

Therefore, by re-arranging the equation we find the mercury's specific heat:

C_s = \frac{Q}{m\Delta T}=\frac{275}{(0.450)(4.09)}=149.4 J/(kgK)

Learn more about specific heat capacity:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

5 0
4 years ago
What describes how fast an object is moving and in what direction
Mashcka [7]

Speed is a description of how fast an object moves; velocity is how fast and in what direction it moves. In physics, velocity is speed in a given direction. When we say a car travels at 60 km/h, we are specifying its speed.

6 0
3 years ago
Read 2 more answers
PLEASE HELP ME ASAP!!!!!!!!!
NNADVOKAT [17]

Answer:

letter C. velocity hope this helps

7 0
3 years ago
The wavelength of light is 5000 angstrom. Express it in nm and m.
Ierofanga [76]

Answer:

1 angstrom = 0.1nm

5000 angstrom = 5000/1 × 0.1nm

<h3>= 500nm</h3>

1 \:  angstrom = 1 \times  {10}^{ - 10} m

5000 angstrom = 5000 × 1 × 10^-10

<h3>= 5 × 10^-7 m</h3>

Hope this helps you

7 0
3 years ago
Read this article discussing the amount of time that people of various ages and education levels report spending on different te
iVinArrow [24]

The article is not found here but surveys are important because they are representative samples of a population.

<h3>What is a survey?</h3>

A survey is a useful tool based on population samples, which is used to make statistical analyses in a given investigation.

Differences in surveys are generally due to small sample sizes, which may lead to errors in the analysis of data.

In conclusion, the article is not found here but surveys are important because they are representative samples of a population.

Learn more about surveys here:

brainly.com/question/13624055

#SPJ1

7 0
2 years ago
Other questions:
  • A pair of electrically charged objects attract each other with a force of 4 N when they are a distance of 3 m apart. If their ch
    15·1 answer
  • How much current is in a circuit that includes a 9.0-volt battery and a bulb with a resistance of 4.0 ohms? A. 0.44 amps B. 36 a
    10·1 answer
  • What is the mass of the lunar landing module on the moon? kg
    8·1 answer
  • If Zack has a mass of 80 kg calculate his weight on Earth. Please show work, thank you!
    11·1 answer
  • A rabbit hops through a vegetable garden. He first hops 2 m south, then 4 m west, then 3 m south, and finally 1 m east. What dis
    8·1 answer
  • If Brandy ran for 3 seconds and ended up 6 meters away, what was her speed?
    8·2 answers
  • A laser emits a light beam with a wavelength of 630 nm. The jet passes a liquid with a refractive index of 1.3.
    12·1 answer
  • If the Test Section area has an air speed of 10 m/s, what would be the air speed at the Air Intake area
    11·1 answer
  • What is the net force 100n to the left 100 n to the right
    15·1 answer
  • a person jogs eight complete laps around a 400-m track in a total time of 15.1 min .calculate the average speed, in m/s .
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!