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
lesya [120]
4 years ago
7

Check Your UnderstandingSuppose the radius of the loop-the-loop inExample 7.9is 15 cm and thetoy car starts from rest at a heigh

t of 45 cm above the bottom. What is its speed at the top of the loop
Physics
1 answer:
Pachacha [2.7K]4 years ago
5 0

Answer:

v = 1.7 m/s

Explanation:

By applying conservation of energy principle in this situation, we know that:

Loss in Potential Energy of Car = Gain in Kinetic Energy of Car

mgΔh = (1/2)mv²

2gΔh = v²

v = √(2gΔh)

where,

v = velocity of car at top of the loop = ?

g = 9.8 m/s²

Δh = change in height = 45 cm - Diameter of Loop

Δh = 45 cm - 30 cm = 15 cm = 0.15 m

Therefore,

v = √(2)(9.8 m/s²)(0.15 m)

<u>v = 1.7 m/s</u>

You might be interested in
???????????!??!!!!!!!!​
Diano4ka-milaya [45]
The answer would be B.

6 0
3 years ago
What does electrons and the nucleus have in common?
timama [110]
<span>All atoms of the same element have the same number of protons in the nucleus and consequently have the same atomic number. All atoms of the same neutral element have the same number of electrons as well.</span>
8 0
4 years ago
This is data from a visible satellite image. What types of weather conditions are associated with the image?
babunello [35]
It look like a storm is forming out into the ocean and building pressure and maybe become a hurricane.
I hope this helps :)!!!
8 0
3 years ago
Read 2 more answers
WILL GIVE YOU WHAT EVER YOU WANT JUST HELP ME
Alona [7]

Answer:

Explanation:

Essential Knowledge

It is essential that the student be able to distinguish between specialized structures that allow protists and fungi to obtain energy and explore their environment.

Protists

Protists are organisms that are classified into the Kingdom Protista. Although there is a lot of variety within the protists, they do share some common characteristics.

● Protists are usually single celled organisms.

● Live in moist environments.

● Vary in the ways they move and obtain energy.

Protists obtain their energy in several ways.

● Animal-like protists ingest or absorb food after capturing or trapping it.

● Plant-like protists produce food through photosynthesis.

● Fungus-like protists obtain their food by external digestion either as decomposers or as parasites.

● Some protists have both autotrophic and heterotrophic characteristi

5 0
3 years ago
PLEASE HELP THIS IS URGENT!!!!! 50 POINTS!!!
Alja [10]
What math class are you in I think I can help
6 0
3 years ago
Read 2 more answers
Other questions:
  • Help me pleaseee...
    11·2 answers
  • Saved While paddling a canoe up the river, Jan saw some beautiful flowers along the river bank. The canoe is 35 yards lower than
    15·1 answer
  • What is a control,constant, independent variable, and a dependent variable in a science experiment?
    10·1 answer
  • A piece of stone is thrown up from a height of 25 meters above the ground. after 2 seconds the stone reaches the highest point.
    14·1 answer
  • A rectangular barge, 5.2 m long and 2.4 m wide, floats in fresh water. Suppose that a 410-kg crate of auto parts is loaded onto
    11·2 answers
  • Which is an inorganic compound?
    15·1 answer
  • A hockey puck is hit on a frozen lake and starts moving with a speed of 12.1 m/s. Exactly 6.10 s later, its speed is 6.10 m/s. T
    6·1 answer
  • I need guidance pls
    14·1 answer
  • Anyone know the answer ?
    12·1 answer
  • What is lower body strength
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!