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
yarga [219]
2 years ago
9

A student lifts a school bag from the ground and puts it on his shoulders 1.5m above the ground. A force of 5N is acting on an o

bject. Calculate the work done by him on the school bag.
Physics
1 answer:
Paul [167]2 years ago
4 0

Answer:

w = 7.5 [J]

Explanation:

We must remember the definition of mechanical work, which tells us that work is equal to the product of force by distance. This force must be applied in the direction of movement. So we have the following equation:

w = F*d

where:

w = work [J]

F = force [N]

d = distance [m]

Now replacing we have:

w = 5*1.5

w = 7.5 [J]

You might be interested in
If a device uses 280 watts of power a day, about how many kilowatt-hours will it use in 30 days?
Novay_Z [31]

Answer:C

Explanation:

Power=280watts=280/1000 kilowatts

Power=0.28 kilowatts

Device use 0.28 kilowatts in 1 day

1day=24hours

Device use 0.28 kilowatts in 24hours

30days=30 x 24=720 hours

For 720 hours=(0.28x720) ➗ 24

For 720 hours=201.6 ➗ 24

For 720 hours=8.4

6 0
2 years ago
Given an electron beam whose electrons have kinetic energy of 10.0 kev , what is the minimum wavelength λmin of light radiated b
kolbaska11 [484]
To answer the problem we would be using this formula which isE = hc/L where E is the energy, h is Planck's constant, c is the speed of light and L is the wavelength 
L = hc/E = 4.136×10−15 eV·s (2.998x10^8 m/s)/10^4 eV 

= 1.240x10^-10 m 

= 1.240x10^-1 nm
3 0
3 years ago
Read 2 more answers
Which of the following should NOT be discussed during safety training
Juli2301 [7.4K]
Is there suppose to be an image?
7 0
2 years ago
A ball bounces on the ground. How do the ball and the ground act on each other?(1 point)
liubo4ka [24]

Answer: A is your best answer.

Explanation:

It should be A because the when the ball bounces on the ground the ground will give it force to bounce again but also it wont go as high as it first did. Hope this helps:))

3 0
2 years ago
Read 2 more answers
Air in the atmosphere is heated by the ground this warm air then rises and cooler air falls this is an example of what type of p
Alona [7]
The answer for both is ‘B’
8 0
2 years ago
Other questions:
  • An 8.0 m, 240 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground
    8·1 answer
  • What will happen when the north pole of a magnet is placed against the south pole of another magnet?
    11·1 answer
  • Formula One race cars are capable of remarkable accelerations when speeding up, slowing down, and turning corners. At one track,
    10·1 answer
  • A block with mass ma = 14.0 kg on a smooth horizontal surface is connected by a thin cord that passes over a pulley to a second
    13·1 answer
  • One sees an emission spectrum from a neon sign <br> True<br><br> False<br> 50 points
    6·1 answer
  • What is required for an electric charge to flow through a wire?
    9·1 answer
  • What are the dates of the atlantic hurricane season
    14·2 answers
  • In order to close or reduce the digital divide, it is also necessary to address a gap in skills.a. True b. False
    14·1 answer
  • Are these right? Just need you to confirm or tell we what I got wrong. Thanks​
    10·1 answer
  • Plz help me fill out this table
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!