A student is given a 5.4 g mineral sample. She determines that the volume of her sample is 2 cm3. What is the density of her mineral
Solved
Show answers
More tips
- F Food and Cooking How to salt lard?...
- W Work and Career Can Skill Alone Make You a Professional?...
- C Computers and Internet How to Top Up Your Skype Account Without Losing Money?...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
Answers on questions: Physics
- P Physics Sarah is asked to sort out the list of ions and ionic compounds. how can sarah differentiate between the ions and ionic compounds?...
- P Physics To do work,the force must be applied over a...
- P Physics How many forces are required for an interaction?...
- P Physics A typical pitcher in Little League throws a fastball around 55 mph. This Is (for our purposes) the same as 24.59 m/s. Mr. Anderson claims he can throw a ball at 9.0 m/s, and a major...
- P Physics A person with perfect eyesight looks out and sees what looks like a single, blurry object. In reality, there are two objects close together. What prevents this person from distinguishing...
- P Physics two forces, = (-6.00î – 4.00j) n (-3.00î + 7.00j) n, act on a particle of mass 2.00 kg that is initially at rest at coordinates (-2.00 m, +4.00 m). (a) what are the components of...
- P Physics Can some tell this answer...
- P Physics In order to trap the starship Enterprise, the diabolical Klingons build a huge ideal solenoid 10 light-years long with a diameter of 2.0 million kilometers. Every kilometer of length...
- P Physics The of a photon of light is proportional to its wavelength and proportional to its frequency . Question 6 options: energy, directly, inversely amplitude, directly, inversely energy,...
- P Physics To understand the meaning and possible applications of the work-energy theorem. Find the net work W done on the particle by the external forces during the particle s motion....
Ответ:
Apply conservation of energy; the pendulum's maximum potential energy (at the highest point of its motion) equals the maximum kinetic energy (at the lowest point of its motion):
Max PE = Max KE
We will calculate the max PE, ie the potential energy after that ball is lifted up:
Max PE = mgh
PE is the potential energy, m is the ball's mass, g is acceleration due to earth's gravity, and h is the height.
Given values:
m = 2kg
g = 9.81m/s²
h = 1.5m
Plug in the values and solve for Max PE:
Max PE = 2(9.81)(1.5)
Max PE = 29.43J
The ball's kinetic energy is given by:
KE = 0.5mv²
We know the ball's velocity is greatest when it attains Max KE, and the max KE equals the Max PE:
Max KE = Max PE = 29.43J = 0.5mv²
Given values:
m = 2kg
Now plug in and solve for v:
2v² = 58.86
v = 5.425
v = 5.4m/s