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
Afina-wow [57]
3 years ago
10

The largest watermelon ever grown had a mass of 118 kg. Suppose this watermelon were exhibited on a platform 5.00 m above the gr

ound. After the exhibition, the watermelon is allowed to slide along to the ground along a smooth ramp. How high above the ground is the watermelon at the moment its kinetic energy is 4.61 kJ?
Physics
1 answer:
WINSTONCH [101]3 years ago
6 0

Answer: height = 3.98m

Explanation: by placing the watermelon at a height above the ground, it has a potential energy of the formulae

p = mgh

p = potential energy = 4.61kJ = 4610J

m = mass of watermelon = 118 kg

g = acceleration due gravity = 9.8 m/s²

4610 = 118 * 9.8 * h

h = 4610/ 118 * 9.8

h = 4610/ 1156.4

h = 3.98m

You might be interested in
A 9.0-V battery (with nonzero resistance) and switch are connected in series across the primary coil of a transformer. The secon
qwelly [4]

Answer:

N₂ / N₁ = 13.3

Explanation:

A transformer is a system that induces a voltage in the secondary due to the variation of voltage in the primary, the ratio of voltages is determined by the expression

           ΔV₂ = N₂ /N₁  ΔV₁

where ΔV₂ and ΔV₁ are the voltage in the secondary and primary respectively and N is the number of windings on each side.

In this case, they indicate that the primary voltage is 9.0 V and the secondary voltage is 120 V

therefore we calculate the winding ratio

         ΔV₂ /ΔV₁ = N₂ / N₁

         N₂ / N₁ = 120/9

         N₂ / N₁ = 13.3

s good clarify that in transformers the voltage must be alternating (AC)

3 0
3 years ago
What the dog doin? <br><br> Legend says, no one has ever known what the dog has been doing.
Xelga [282]
What dog lol, I need context pls
5 0
2 years ago
Collision 2: Blue Cart Moving Slower than the Red Cart
pshichka [43]

Answer:

this is what i always used

Explanation:

http://www.sjutsscience.com/uploads/3/7/4/5/37458459/phet_collision_lab_2020_key.pdf

3 0
3 years ago
A fighter jet flies 3 km west and then 2 km east in 8 minutes. Determine the jet's average velocity. (Remember to convert!)
blondinia [14]

Answer:

7.69km/hr due east

Explanation:

Given parameters:

Displacement due west  = 3km

Displacement due east = 2km

Time taken  = 8 minutes

Unknown:

Average velocity  = ?

Solution:

Average velocity is the rate of change of displacement with time.

  Velocity  = \frac{displacement}{time }

 Displacement is deals with the start and the end;

  Here, displacement  = 3km - 2km  = 1km due east

Time  = 8min

     60min  = 1hr

       8min = \frac{8}{60}   = 0.13hr

 Average velocity = \frac{1km}{0.13hr}   = 7.69km/hr due east

6 0
3 years ago
Which best describes friction?
tangare [24]

Answer:

a constabt force that acts on object that rub together

Explanation:

It is because Friction is the rubbing of one body against another body

5 0
2 years ago
Other questions:
  • A high school physics student is sitting in a seat reading this question. The magnitude of the force with which the seat is push
    5·2 answers
  • Scenario A: A 3 spring is compressed a distance of 1.0 m. Scenario B: A 6 spring is compressed a distance of 0.8 m. Scenario C:
    6·2 answers
  •                             URGENT
    5·2 answers
  • A sound source of frequency f moves with constant velocity (less than the speed of sound) through a medium that is at rest. A st
    9·1 answer
  • PLS HELP
    12·2 answers
  • Name two objects that have a high density.
    12·1 answer
  • What is an example of situational irony in the excerpt?​
    10·2 answers
  • What's the definition energy?​
    13·1 answer
  • Write the law of friction???​
    15·2 answers
  • Select the correct answer.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!