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
Keith_Richards [23]
3 years ago
12

A child is sliding down a slide at the playgound. is mechanicalenergy conserved

Physics
1 answer:
Flauer [41]3 years ago
5 0

No. Mechanical energy is not conserved.  There's quite a bit of friction on the slide.  So some of the potential energy is lost to heat on the way down, and the child arrives at the bottom with hot pants and less kinetic energy than you might expect.

You might be interested in
Assume you are in the car and the car is moving at a certain speed to
Setler79 [48]
You are at rest with respect to the car.
You are in motion with respect to the School.

6 0
3 years ago
40. The emotions of this drug vary from euphoria to detachment to panic.
statuscvo [17]

Answer:

Marijuana

Explanation:

User of marijuana.

6 0
2 years ago
A low resistance light bulb and a high resistance light bulb are connected in parallel with each other. Which bulb is brighter i
sweet [91]
<h2>Answer:</h2>

The bulb with low resistance will be brighter.

<h2>Explanation:</h2>

The brightness of a bulb is a function of both the voltage across the bulb and current flowing through the bulb. The higher the voltage, the higher the current. Hence the brighter the bulb.

Now, according to the question, the bulbs (the high resistance bulb and the low resistance bulb) are connected in parallel with each other. This means that the same voltage passes across them.

Also, we know that according to Ohm's law, the voltage (V) and current (I) through a conductor are related by the following equation;

V =  I x R                -------------------(i)

Where;

R is the resistance of the conductor.

We can re-write equation (i) as follows;

I = V / R               -----------------------(ii)

According to equation (ii), at fixed voltage (V), the current (I) will increase as the resistance (R) decreases.

Now, since the two bulbs have the same voltage, the bulb with the low resistance will allow a larger flow of current than the bulb with high resistance.  Therefore, as said earlier that brightness is dependent on voltage and current, the bulb with the low resistance (and having larger current at some voltage) will be brighter than the bulb with the high resistance (having smaller current at same voltage).

6 0
3 years ago
The mass of an object changes as the distance from the center of gravity changes.
Alchen [17]

Answer:

true

Explanation:

this is the answer to this question

8 0
3 years ago
An electron is a negatively charged particle that has a charge of magnitude, e - 1.60 x 10-19 C. Which one of the following stat
irina [24]

Explanation:

The charge on the electron is, q=-1.6\times 10^{-19}\ C

The electric field at a distance r from the electron is :

E=k\dfrac{q}{r^2}

Where

k is the electrostatic constant, k=\dfrac{1}{4\pi \epsilon_o}

We know that the electric field lines starts from positive charge and ends at the negative charge. Also, for a positive charge the field lines are outwards while for a negative charge the field lines are inwards.

So, the correct option is " the  electric field is directed toward the electron and has a magnitude of k\dfrac{q}{r^2}. Hence, this is the required solution.

4 0
3 years ago
Other questions:
  • Gravity is the main force for mass movement.<br> True<br> False
    9·2 answers
  • A tennis ball is tossed upward with a speed of 3.0 m/s. We can ignore air resistance. What is the velocity of the ball .40 secon
    7·2 answers
  • Using complete sentences, explain why graphs are so important to scientists.
    15·1 answer
  • There is an upper limit on the speed of a particle. This means there is also an upper limit on its
    6·1 answer
  • What is thermal energy defined as
    6·2 answers
  • Unlike acceleration and velocity, speed is NOT a quantity that accounts for..
    14·2 answers
  • A closed loop conductor that forms a circle with a radius of 1 m is located in a uniform but changing magnetic field. If the max
    8·1 answer
  • Le manque de sommeil peut réduire la production d'insuline par le pancréas. L'insuline est responsable de métaboliser le sucre d
    5·1 answer
  • The value of acceleration due to gravity (g) on Pluto is about 0.61 meters/second2. How much will an object that weighs 250 newt
    14·1 answer
  • Consider the previous question. which has the greater acceleration: the bug or the windshield?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!