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
sertanlavr [38]
3 years ago
7

F all of the energy in a falling object's gravitational potential energy store is transferred to its kinetic energy store by the

time it lands, then the relationship shown below can be used. Which of the four options below it correctly shows how this relationship can be expressed in terms of height, h?
Physics
1 answer:
stepladder [879]3 years ago
5 0

Answer:

The options are not shown, so let's derive the relationship.

For an object that is at a height H above the ground, and is not moving, the potential energy will be:

U = m*g*H

where m is the mass of the object, and g is the gravitational acceleration.

Now, the kinetic energy of an object can be written as:

K = (1/2)*m*v^2

where v is the velocity.

Now, when we drop the object, the potential energy begins to transform into kinetic energy, and by the conservation of the energy, by the moment that H is equal to zero (So the potential energy is zero) all the initial potential energy must now be converted into kinetic energy.

Uinitial = Kfinal.

m*g*H = (1/2)*m*v^2

v^2 = 2*g*H

v = √(2*g*H)

So we expressed the final velocity (the velocity at which the object impacts the ground) in terms of the height, H.

You might be interested in
When a ray of light is incident normally on an air glass interface what is its angle of refraction​
DiKsa [7]

Answer:

When a ray of light falls on a glass slab normally, the angle between normal and incident ray is zero.

3 0
2 years ago
What might cause matter to change states
k0ka [10]
Temperatures can cause matter to change state.
4 0
3 years ago
1. thomas jefferson proposed using the length (l) of a simple pendulum whose period (t) was exactly 2 seconds as the definition
Alecsey [184]

The length of a 2 sec pendulum is 1 m.

Given that, initial length of the simple pendulum L₁ = 1 m

Initial time period T₁ = 2 sec

We need to find the length of the pendulum whose time period is 2 sec

T₂ = 2 sec

L₂ = ?

We know that the time period of the simple pendulum is given by the formula,

T = 2π√(L/g)

From the above relation, we can write T ∝ √L

T₁ / T₂ = √(L₁/L₂)

Making L₂ from the above relation, we have,

L₂ = (T₂² * L₁)/ T₁² = 2² * 1/ 2² = 1 m

Thus, the length of a 2 sec pendulum is 1 m.

To know more about time period:

brainly.com/question/17350379

#SPJ4

7 0
1 year ago
A suspended object A is attracted to a charged object B, can one conclude that A is charged? Explain
irinina [24]

Explanation:

In my view, when the Object A is attracted to a Charged object B. Object B should be Negatively or Positively charged. So Object B should be the Opposite charged according to the Object B

Example =

If Object B is Negatively Charged, the Object A should be Positively Charged

If the Object B is Positively Charged, the Object A should be Negatively Charged

Sometimes it can Mix as a Neutral as well

Hope this Helps

5 0
3 years ago
Creates an image that appears upside down behind the focal point
zheka24 [161]
An image that appears upside down behind the focal point is an image that is reflected on a concave mirror. Mirrors reflect different kinds of images based on the placement of an object that is reflected towards it. There are two kinds of mirrors, concave and a convex mirrors, the latter makes objects seem smaller and farther than where it is exactly.
8 0
3 years ago
Other questions:
  • At which location could you place the north pole of a bar magnet so that it would be pushed away from the magnet shown?
    10·2 answers
  • During a science fair, a group of students came up with the following question: “Is color an inherent property in objects or is
    5·2 answers
  • 14)
    8·1 answer
  • A microwave oven uses 1,200 watts. It runs a total of 6 hours during the corse of a week. How much energy does the microwave ove
    8·1 answer
  • Which system of measurement does the u.s. use? the metric system the si system the english system us customary system
    9·2 answers
  • A projectile is launched straight up. From launch to landing back down takes 8s.
    5·1 answer
  • If your mass, the mass of Earth, and the mass of everything in the solar system were twice as much as it is now, yet everything
    6·1 answer
  • You accelerate from 2m/s to 6m/s while traveling a distance of 2m; what was your acceleration?
    10·1 answer
  • A lead object and quartz object each have the same initial volume. the volume of each increases by the same amount, because the
    8·1 answer
  • Two 2.0-mm diameter beads, c and d, are 12mm mm apart, measured between their centers. bead c has mass 1.0 g and charge 2.5nc nc
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!