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
Ahat [919]
3 years ago
15

A pendulum of mass 0.8 kg has 20 joules of potential energy at the top of its path. It’s kinetic energy at the bottom of its swi

ng is:
A.80J
B.20J
C.40J
D.10J
Physics
2 answers:
Degger [83]3 years ago
8 0

Answer:

20 joules

Explanation:

BaLLatris [955]3 years ago
5 0

Answer:20joules

Explanation:

The kinetic energy at the bottom of the pendulum is 20joules because energy is not created nor destroyed,it only change forms

You might be interested in
As the amount of surface area increases, what happens to the rate of this reaction? If the antacid tablet were broken into eight
dangina [55]

as the surface  area increases the rate of reaction  also increases.

Explanation:

4 0
3 years ago
Exercise that strengthens your heart, increases your lung capacity, and helps you to burn fate and lose weight is..
olga2289 [7]

Answer : Cardio training

Explanation : Cardio exercise helps improve lung function , strengthens your heart and improve your endurance and increases lung capacity. The peoples do cardio is burn calories and lose the weight.

Cardio helps decrease your heart rate and blood pressure and improve your breathing.

8 0
3 years ago
Which of the following is an example of changing momentum?!
ExtremeBDS [4]

Answer:

B!!!

Explanation:

5 0
3 years ago
Read 2 more answers
How can a magnetic field be used to generate an electric current?
Irina18 [472]
<span>When a magnet moves near a wire, it's changing field causes the electrons in the wire to flow as electric current.</span>
3 0
3 years ago
A 150 kg line backer sacks the 120 kg quarterback. With what force is the quarterback sacked if the line backer has an accelerat
Gekata [30.6K]

Answer:

The force required to move the quarterback with linebacker is <u>1215 N</u>

Explanation:

\text { Mass of linebacker } \mathrm{m}_{2}=150 \mathrm{kg}

\text { Mass of quarterback } \mathrm{m}_{2}=120 \mathrm{kg}

\text { Moved at an acceleration }(a)=4.5 \mathrm{m} / \mathrm{s}^{2}

Using Newton's second law, it is established that  F = Ma

Where F is net force acting on the system, a is the acceleration and M is mass of the two object \left(m_{1}+m_{2}\right)

Now consider both \mathrm{m}_{1} \text { and } \mathrm{m}_{2}as a system, so net force acting on the system is \text { Force }=\left(m_{1}+m_{2}\right) a

Substitute the given values in the above formula,

\text { Force }=(150+120) \mathrm{kg} \times 4.5 \mathrm{m} / \mathrm{s}^{2}

\text { Force }=270 \mathrm{kg} \times 4.5 \mathrm{m} / \mathrm{s}^{2}

Force = 1215 N

<u>1215 N </u>is the force required to move the quarterback with linebacker.

5 0
3 years ago
Other questions:
  • Which two statements are true about energy transformations?
    5·1 answer
  • A laser emits a cylindrical beam of light 2.3 mm in diameter. The average power of the laser is 2.4 mW . The laser shines its li
    15·1 answer
  • Hat processes lead to glacial erosion ?
    13·1 answer
  • A train accelerates at -1.5 m/s2 for 10 seconds. If the train had an initial speed of 32 m/s, what is its new speed?
    9·1 answer
  • Janelle stands on a balcony, two stories above Michael. She throws one ball straight up and one ball straight down, but both wit
    15·1 answer
  • If the average movement of the particles in a sweater increases, what will happen to the sweater's temperature?
    12·1 answer
  • When the compasses are moved close to a wire with a current which will the compasses point
    9·2 answers
  • A certain atom has 26 protons, 26 electrons, and 30 neutrons. It mass number is?
    8·2 answers
  • PLEASE HELP WILL MARK BRAINLIEST
    8·2 answers
  • HELPPP BESTIESSS An astronomer is studying two stars that have about the same size and brightness. From the Earth, one of the st
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!