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
Ivahew [28]
2 years ago
7

(a) How much work is required to lift a 35-kg object from the ground 3.0 m into the air? (b) How much gravitational potential en

ergy did this object gain?
Physics
1 answer:
V125BC [204]2 years ago
7 0

Answer:

(a) work required to lift the object is 1029 J

(b) the gravitational potential energy gained by this object is 1029 J

Explanation:

Given;

mass of the object, m = 35 kg

height through which the object was lifted, h = 3 m

(a) work required to lift the object

W = F x d

W = (mg) x h

W = 35 x 9.8 x 3

W = 1029 J

(b) the gravitational potential energy gained by this object is calculated as;

ΔP.E = Pf - Pi

where;

Pi is the initial gravitational potential energy, at initial height (hi = 0)

ΔP.E = (35 x 9.8 x 3) - (35 x 9.8 x 0)

ΔP.E = 1029 J

You might be interested in
Pls answer asap!! I need help on this question!
evablogger [386]

Hubble space telescope, Hubble deep field guide, moon, mercury, Saturn, sun, galaxy messier 101

8 0
2 years ago
Read 2 more answers
A car travels west for 240 km in 4 h. what is the car's velocity?
nalin [4]
The velocity is 60 because you divide your distance by your time (240÷4=60)
4 0
3 years ago
Read 2 more answers
How does the height from which you drop the ball relate to the height that the ball bounces back up?
Stels [109]
The higher you go the more potential energy there is, and the lower it is the more kinetic energy there is, so the more kinetic energy there is the higher the ball will bounce.
7 0
3 years ago
What building materials do you believe would work well to build a home in that area? Explain why you chose these materials.
Luden [163]
Depends on what the area is. If it’s a rural place, Wood is cheep & easy to build. If there’s a lot of corrosion, strong weather/hurricane, bricks.
8 0
3 years ago
PLEASE ANSWER ASAP!.!.!!.!!!!.!.!.
lbvjy [14]
1. Most PE, because PE is directly proportional to distance (height)
Height: 100 meters
Speed: 0 mph

2. Most KE, because KE is directly proportional to speed
Height: 10 meters
Speed: 40 mph

3. Most TE, average KE
Height: 10 meters
Speed: 40 mph

4. The skater gains thermal energy as she goes down the slope, because the speed of the skater increases, so it increases the total kinetic energy of the particles, and makes them vibrate faster, resulting in a higher temperature.
8 0
3 years ago
Other questions:
  • What happens to ocean water as it moves from Antarctica to the equator
    6·1 answer
  • Please help ! will mark brainliest < 3
    8·1 answer
  • A spring of force constant 285.0 N/m and unstretched length 0.230 m is stretched by two forces, pulling in opposite directions a
    14·1 answer
  • Which of the following elements are most likely to have similar chemical properties?
    7·1 answer
  • What is the process called when the moon begins to fade from a full moon to the new moon?
    9·1 answer
  • If only an external force can change the velocity of a body, how can the internal force of the brakes bring a car to rest? 1. It
    9·1 answer
  • What does the statement “10 m/s to the north” describe? A. time B. velocity
    7·2 answers
  • What must happen to an object in order to accelerate it?
    11·1 answer
  • A given wave has a wavelength of 1.4 m and a frequency of 2.0 Hz. How fast
    5·1 answer
  • the picture shows six panels (a, b, c, d, e, and f), each displaying two snapshots of a box moving on a rough flor. forces may b
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!