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
Zolol [24]
4 years ago
14

Alexander has a mass of 70 kilograms. his apartment is on the second floor. 5 meters yo from ground level . How much work does h

e do against gravity each time he climbs the stairs to his apartment.
Physics
1 answer:
navik [9.2K]4 years ago
7 0

potential energy gain = work done by alexander

PE=mass*gravity * height

PE=70kg*9.81*5=3433.5

take g=9.81

answer =3433.5

You might be interested in
Two balls with the same mass, one of wood and the other a Ping-Pong ball partly
MissTica

Answer:

hi friends I need to be a good

7 0
2 years ago
Fill in the blank please I’m very confused
Reika [66]
For the third one on the top you can put to get solar panels on your roof
4 0
3 years ago
HELP PLZ HELP !!!!!!!!!!!
AURORKA [14]
Neon (10)
Sodium (11)
Silicon (14)
Iron (26)
Uranium (92)

7 0
3 years ago
Read 2 more answers
Sophia is planning on going down an 8-m water slide. Her weight is 50 N. She knows that she has gravitational potential energy (
Pepsi [2]

Answer:The higher up an object is the greater its gravitational potential energy. The larger the distance something falls through the greater the amount of GPE the object loses as it falls. As most of this GPE gets changed into kinetic energy, the higher up the object starts from the faster it will be falling when it hits the ground.  So a change in gravitational potential energy depends on the height an object moves through.

Explanation: Lifting an apple up 1 metre is easier work than lifting an apple tree the same height. This is because a tree has more mass, so it needs to be given more gravitational potential energy to reach the same height.

6 0
4 years ago
The rear window in a car is approximately a rectangle, 1.3 m wide and 0.30 m high. The inside rear-view mirror is 0.50 m from th
maria [59]

Answer:

Height of mirror 0.075 m

width of mirror 0.325 m  

Explanation:

given data

wide = 1.3 m

high = 0.30 m

driver’s eyes = 0.50 m

rear window = 1.50 m

solution

we take here height / width of the mirror  is

height / width   = \frac{h}{w}   .................1

and

height /width of the window is

height /width  = \frac{h_w}{w_w}   .................2

and

distance of eye / window by the mirror is

distance of eye / window = \frac{x_e}{x_w}      .................3

so here

θ = θi  = θr    ....................4

and  tanθ for vertical is

tanθ  = \frac{h}{x_e}  

tanθ  =  \frac{h_w}{(x_e + x_w)}       ....................5

so

h =   h_w \times  \frac{x_e}{(x_e + x_e)}     ....................6

put  here value and we get

h = 0.30 \times  \frac{0.50}{(0.50 + 1.50)}  

h = 0.075 m

and

when we take here tanθ for horizontal than it will be

tanθ = \frac{w}{x_e}    

tanθ = \frac{w_w}{(x_e + x_w)}       .......................7

so

w = w_w \times  \frac{x_e}{(x_e + x_w)}         ....................8

put here value and we get

w = 1.3 \times  \frac{0.50}{(0.50 + 1.50)}  

w = 0.325 m

7 0
3 years ago
Other questions:
  • What do waves transmit?
    7·2 answers
  • What is the highest pHoney bees beat their wings, making a buzzing sound at a frequency of 2.3 × 102 hertz. What is the period o
    13·1 answer
  • How many horsepower does a 1100 watt microwave have
    10·1 answer
  • The half-wave rectifier circuit of vs(t) = 170 sin(377t) V and a load resistance R = 15Ω. Determine: a. The average load current
    5·2 answers
  • Which statement correctly describes the motion on which an Earth time interval is based?
    9·1 answer
  • Each plate of an air-filled parallel-plate capacitor has an area of 45.0 cm2, and the separation of the plates is 0.080 mm. A ba
    6·1 answer
  • Starting from rest, the Road Runner accelerates at 3 m/s for ten seconds. What is the final velocity of the Road Runner?
    15·2 answers
  • An object with a mass of 6.0 kg accelerates 8.0 m/s^2 when an unknown force is applied to it. What is the amount of the force? R
    13·1 answer
  • The distance between the object and its image formed by a plane mirror appears to be 24 cm. What is the distance between the mir
    13·1 answer
  • How do you think this could affect Earth and<br> the organisms that live on our planet?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!