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
e-lub [12.9K]
3 years ago
6

what is the difference in gravitation potential energy when a 3.5 of box is raised from a height of 1.2m to a height of 4.0m?​

Physics
1 answer:
mario62 [17]3 years ago
6 0

Answer: 96.138 J

Explanation:

Use equation for potential gravitational energy : Ep=mGh

Ep1=mGh1

Ep2=mGh2

-------------

Ep1= 3.5*9.81*1.2

Ep1=41.202 J

Ep2=3.5*9.81*4

Ep2=137.34 J

Ep=Ep2-Ep1

Ep=137.34-41.202

Ep= 96.138 J

You might be interested in
Suppose that aliens from a planet orbiting Betelgeuse have eyes similar to human eyes, except that the diameter of their pupils
slega [8]

Answer:

Answered

Explanation:

The data given in the problem

Diameter of a human pupil=0.007 m=7 mm

Diameter of alien pupil=0.5=500 mm

Here we have to calculate the minimum distance at which the alien can see Betelgeuse i.e. the focal length (or the working distance). For this calculation we assume the eye to be a spherical lens.

The focal length and diameter of the lens are related by the formula F=\frac{r}{2} Where r is radius of curvature i.e. d/2

Therefore for the alien, focal length=F=\frac{25}{2}=12.5mm=0.0125F=\frac{25}{2}=12.5mm=0.0125

7 0
3 years ago
John is going to use a rope to pull his sister Laura across the ground in a sled through the snow. The rope makes an angle of 25
Liula [17]
The mass of Laura and the sled combined is 887.5 kg
5 0
3 years ago
A student performs an experiment that involves the motion of a pendulum. The student attaches one end of a string to an object o
lara [203]

Answer:

the answers the correct one is cη

Explanation:

In this simple pendulum experiment the student observes a significant change in time between each period. This occurs since an approximation used is that the sine of the angle is small, so

              sin θ = θ

 

with this approach the equation will be surveyed

     d² θ / dt² = - g / L sin θ

It is reduced to

      d² θ / dt² = - g / L θ

in which the time for each oscillation is constant, for this approximation the angle must be less than 10º so that the difference between the sine and the angles is less than 1%

The angle is related to the height of the pendulum

         sin θ = h / L

         h = L sin θ.

Therefore the student must be careful that the height is small.

When reviewing the answers the correct one is cη

8 0
4 years ago
Do wave properties affect wave speed
yawa3891 [41]

Answer:

Nope!

Explanation:

The amplitude of a wave does not affect the speed at which the wave travels. Both Wave A and Wave B travel at the same speed. The speed of a wave is only altered by alterations in the properties of the medium through which it travels.

HOPE IT HELPS :)

PLEASE MARK IT THE BRAINLIEST!

5 0
3 years ago
Which of the following is NOT a criteria for a celestial object to be a planet?
Mazyrski [523]

Answer:

The option which is not a criteria for a celestial object to be a planet is;

The object must be massive enough have a gravitational pull on the Sun

Explanation:

There are three criteria for a celestial object to be classified as a planet including;

1) The object's orbit is around the Sun

2) The shape of the object is nearly round due to its mass which is capable of assuming hydrostatic equilibrium

3) Other smaller objects in the neighborhood around the object has been cleared by the object

Therefore, the option which is not a criteria for a celestial object to be a planet is that it must be massive enough to have a gravitational pull on the Sun as every two objects in the Universe share a common gravitational pull according to Newton's Law of Gravitation.

5 0
3 years ago
Other questions:
  • Which is one way that scientists ensure that data is reliable?
    14·1 answer
  • If a freely falling object were equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s², then i
    13·2 answers
  • The left end of a long glass rod 8.00 cm in diameter and with an index of refraction of 1.60 is ground and polished to a convex
    8·1 answer
  • A student puts a beaker of boiling water where it touches a block of ice.
    8·1 answer
  • What can accurately be said about a resultant wave that displays both reinforcement and interference?        A. Molecules remain
    15·2 answers
  • What elements compose the stars and planets in the universe
    14·1 answer
  • What could you do to change the volume of a gas?
    14·2 answers
  • Watching a Helicopter Take Off At a distance of 58 ft from the pad, a man observes a helicopter taking off from a heliport. If t
    6·1 answer
  • Which of the following will most likely be a sustainable environment?
    12·2 answers
  • 8. When a plate cracks, the crack is called a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!