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
Nuetrik [128]
2 years ago
8

A metal ball rolls from rest at Point A down the track to Point E as shown below.

Physics
1 answer:
Tju [1.3M]2 years ago
8 0

Answer:

Explanation:

Velocity is at its greatest when kinetic energy is at its max which is when all the ball's energy has been transformed from potential energy to kinetic energy which is at the lowest point in its travels (assuming the ball is rolling down a ramp). You have no picture here so this answer is a general one, not a specific one.

You might be interested in
What will be the ME of a machine that produces a 240 N work with a 300
Elden [556K]

Answer:

Efficiency = 80%

Explanation:

Given the following data;

Work output = 240 N

Work Input = 300 N

To find the mechanical efficiency of a machine;

Efficiency = \frac {Out-put \; work}{In-put \; work} * 100

Substituting into the equation, we have;

Efficiency = \frac {240}{300} * 100

Efficiency = 0.8 * 100

Efficiency = 80%

Therefore, the mechanical efficiency of the machine is 80 percent.

3 0
3 years ago
Estimate the volume of a piece of molecular cloud that has the same amount of water as your body.
noname [10]

Question:

The water molecules now in your body were once part of a molecular cloud. Only about onemillionth of the mass of a molecular cloud is in the form of water molecules, and the mass density of such a cloud is roughly 2.0×10−21 g/cm^3.

Estimate the volume of a piece of molecular cloud that has the same amount of water as your body.

Answer:

The volume of cloud that has the same density as the amount of water in our body is 1.4×10²⁵ cm³

Explanation:

Here, we have mass density of cloud  =  2.0×10⁻²¹ g/cm^3

Density = Mass/Volume

Volume = Mass/Density =   If the mass is 40 kg and the body is made up of 70% by mass of water, we have

28 kg water = 28000 g

Therefore the Volume = 28 kg/ 2.0×10⁻²¹ g/cm^3 = 1.4×10¹⁹ m³ = 1.4×10²⁵ cm³.

Therefore, the volume of cloud that has the same density as the amount of water in our body = 1.4×10²⁵ cm³.

6 0
3 years ago
The mass number is determined by which particles?
BartSMP [9]
I am not completely sure, but I believe that it depends on the total mass of the Protons and Neutrons




7 0
3 years ago
Read 2 more answers
What’s up world or people
Korolek [52]

Hi how are you?

Are you a Libra?

8 0
2 years ago
Aligned magnetic domains are only present in which of the following?
butalik [34]

Answer:

i think c

Explanation:

8 0
3 years ago
Other questions:
  • Within an integrated circuit, each wafer is cut into sections, which A. carry a single circuit and are placed all together in on
    12·2 answers
  • What are the similarity’s and differences of scalar and vector quantity’s?
    9·1 answer
  • The pH of pure water at 25°C is 7.0. The enthalpy change of the autoionization of water is +55.89 kJ/mol. What is the pH of pure
    9·1 answer
  • A child pushes her toy across a level floor at a steady velocity of 0.50 m/s using an applied force of 2.0 N. If the weight of t
    5·2 answers
  • Why can’t contour lines cross?
    8·1 answer
  • During an experiment, a toy car accelerates forward for a total time of 5 s. Which of the following procedures could a student u
    10·1 answer
  • If you were looking for a metalloid on the periodic table,the best place to look would be?
    6·1 answer
  • Megan wants to see if mice that are fed food A or B grow at a faster rate. She measures the mass of the mice on day 1, then divi
    10·2 answers
  • Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink?
    15·2 answers
  • Easy defimation of newtons second law of motion
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!