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
BlackZzzverrR [31]
3 years ago
13

A 2.35-kg rock is released from rest at a height of 21.4 m. Ignore air resistance and determine (a) the kinetic energy at 21.4 m

, (b) the gravitational potential energy at 21.4 m, (c) the total mechanical energy at 21.4 m, (d) the kinetic energy at 0 m, (e) the gravitational potential energy at 0 m, and (f) the total mechanical energy at 0 m.
Physics
1 answer:
kvasek [131]3 years ago
6 0

Explanation:

Given that,

The mass of rock, m = 2.35-kg

It was released from rest at a height of 21.4 m.

(a) The kinetic energy is given by : E_k=\dfrac{1}{2}mv^2

As the rock was at rest initially, it means, its kinetic energy is equal to 0.

(b) The gravitational potential energy is given by : E_p=mgh

It can be calculated as :

E_p=2.35\times 9.8\times 21.4\\\\E_p=492.84\ J

(c) The mechanical energy is equal to the sum of kinetic and potential energy such that,

M = 0 J + 492.84 J

M = 492.84 J

Hence, this is the required solution.

You might be interested in
A vector is parallel to the y axis, what is it x component?<br>​
slavikrds [6]

Answer:

Explanation:

A vector is parallel to the y axis .

Let its magnitude be A . So the vector can be represented as A j .

where i and j are unit vectors in x and y axis direction .

The x component of A j will be dot product of A j with i

The x component of A j = A j . i

= A x 0      [  Since j . i = 0 ]

= 0

4 0
2 years ago
When a dielectric slab is inserted between the plates of one of the two identical capacitors
tatiyna

Answer:(A-P,S;B-P,S;C-Q,S;D-P,S)

Solution

(A)→P,S,(B)→P,S,(C)→Q,S,(D)→P,S.

Explanation:

4 0
2 years ago
Read 2 more answers
What must be true for any endothermic reaction?
miskamm [114]
They have to be warm because of the word thermic which means heat
4 0
3 years ago
How does SCOTUS view information obtained by private citizens and subsequently shared with law enforcement?
scoundrel [369]

Answer:

as a legal search

Explanation:

In the specific case, there was a trespass on private property through the installation of a global positioning system (GPS) to gather sensitive information about the citizen. This is considered a legal search and is not appropriate to conduct such an investigation without proper approval from the relevant authority.

5 0
3 years ago
Why does a blue shirt look blue? Choose the BEST explanation.
Helen [10]
A is the best anwser
3 0
3 years ago
Read 2 more answers
Other questions:
  • A stubborn 130 kg pig sits down and refuses to move. to drag the pig to the barn, the exasperated farmer ties a rope around the
    6·1 answer
  • The _________ states that the entropy of a closed system must always increase.
    13·1 answer
  • The passing of the Moon directly between Earth and the Sun is a/an
    6·2 answers
  • What you can see with the naked eye versus what needs magnification to be seen characterizes the contrast of which of the follow
    7·1 answer
  • What is it called when something doesn’t flow easy
    8·1 answer
  • A swimmer uses her feet to push off the wall and the wall exerts the same force back on her. The force exerted by the wall on th
    7·1 answer
  • Outside of the mirror in your bathroom (or bedroom), how else are you using mirrors in your daily life?
    6·1 answer
  • . A car going 50 m/s accelerates to pass a truck. Five seconds later the car is going 80m/s. Calculate the acceleration of the c
    12·1 answer
  • Which two statements are true of electromagnetic waves?
    12·2 answers
  • Plz help owo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!