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
STatiana [176]
3 years ago
11

A 3-kg mass is in free fall. What is the velocity of the mass after 7 seconds??

Physics
2 answers:
bekas [8.4K]3 years ago
7 0
68.6m/s in the answer
Lisa [10]3 years ago
3 0
68.6m/s is the answer <span />
You might be interested in
The sketch below shows some of the insides of a stereo speaker. Running current through the wire, which is wrapped around the ba
VARVARA [1.3K]

Energy transformation, also termed as energy conversion, is the process of changing energy from one of its forms into another. In physics, energy is a quantity that provides the capacity to perform many works—think of lifting or warming an object. In addition to being convertible, energy is transferable to a different location or object, but it cannot be created or destroyed.


Energy in many of its forms may be used in natural processes, or to provide some service to society such as heating, refrigeration, lighting or performing mechanical work to operate machines. For example, in order to heat your home, your furnace can burn fuel, whose chemical potential energy is thus converted into thermal energy, which is then transferred to your home's air in order to raise its temperature.


In another example, an internal combustion engine burns gasoline to create pressure that pushes the pistons, thus performing work in order to accelerate your vehicle, ultimately converting the fuel's chemical energy to your vehicle's additional kinetic energy corresponding to its increase in speed.

Contents


   1 Entropy and limitations in conversion of thermal energy to other types

   2 Transformation of kinetic energy of charged particles to electric energy

   3 History of energy transformation from the early universe

   4 Examples

       4.1 Examples of sets of energy conversions in machines

       4.2 Other energy conversions

   5 See also

   6 References



3 0
3 years ago
Read 2 more answers
PLS HELP WILL MARK BRAINLIEST
MariettaO [177]

Answer:

2.835 Watts

Explanation:

P = I²R

P = 1.5² × 1.26

P = 2.835 Watts

3 0
3 years ago
Read 2 more answers
Which of the following best represents a chemical reaction?
Sonja [21]

Answer:

The answer to your question should be D.

Explanation:

reactants are on the laft side of arrow and products are on right side of arrow

7 0
3 years ago
Russia shut off the nord stream pipeline that supplies which nation with natural gas?.
Katyanochek1 [597]

Russia shut off the Nord Stream pipeline that supplies natural gas to Germany.

What is the Nord Stream pipeline?

A pair of offshore natural gas pipeline systems in Europe called Nord Stream cross the Baltic Sea from Russia to Germany. It consists of the Nord Stream 1 and Nord Stream 2 pipelines, both of which originate in northwest Russia, near Finland, in Vyborg and Ust-Luga, respectively. Both pipelines travel to Lubmin in the Mecklenburg-Vorpommern state of northeastern Germany.

Due to Russia's invasion of Ukraine, certification for Nord Stream 2 has been rejected. When referring to a larger network of pipelines, such as the feeding onshore pipeline in Russia and additional connections in Western Europe, the term "Nord Stream" is sometimes used.

Nord Stream joins the NEL pipeline to Rehden near Bremen in northwestern Germany and the OPAL pipeline to Olbernhau in eastern Germany at the Czech border in Lubmin.

Thus, the Nord Stream pipeline supplies natural gas to Germany.

Learn more about the natural gas pipeline here,

brainly.com/question/4417882

#SPJ4

5 0
2 years ago
Question 4. A tuning fork ‘A’ produces 6 beats/sec with another fork ‘B’ of un-known frequency. On
8090 [49]

Clever problem.

We know that the beat frequency is the DIFFERENCE between the frequencies of the two tuning forks.  So if Fork-A is 256 Hz and the beat is      6 Hz, then Fork-B has to be EITHER 250 Hz OR 262 Hz.  But which one is it ?

Well, loading Fork-B with wax increases its mass and makes it vibrate SLOWER, and when that happens, the beat drops to 5 Hz.  That means that when Fork-B slowed down, its frequency got CLOSER to the frequency of Fork-A ... their DIFFERENCE dropped from 6 Hz to 5 Hz.

If slowing down Fork-B pushed it CLOSER to the frequency of Fork-A, then its natural frequency must be ABOVE Fork-A.

The natural frequency of Fork-B, after it gets cleaned up and returns to its normal condition, is 262 Hz.  While it was loaded with wax, it was 261 Hz.

4 0
3 years ago
Other questions:
  • Which item has the most potential energy (assume they are all at the same height and mass
    9·2 answers
  • What two traits must a viable hypothesis have
    5·1 answer
  • A 227 kg motorcycle moves with a velocity of 8 m/s. What is its kinetic energy? _______ Joules
    9·1 answer
  • 2.
    15·1 answer
  • What does displacement describe?
    10·1 answer
  • 1.A wave has a period of 20 seconds. What is the frequency?
    13·1 answer
  • 7. A scientific theory can change if (2 points) nobody wants to believe it it becomes too old the scientist who discovered it di
    15·1 answer
  • PLEASE help its timed..
    5·1 answer
  • Abdou was explaining to a classmate that graphite is a good lubricant because it is bonded in layers that easily slip over each
    14·2 answers
  • A centrifuge in a medical laboratory rotates at an angular speed of 3,400 rev/min. When switched off, it rotates through 52.0 re
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!