« previous next »

Author Question: What is the kinetic energy of a 0.160-kg ball thrown at 40.0 m/s (90.0 mph)? a. 54.0 J b. 64.0 J ... (Read 51 times)

waynest

  • Hero Member
  • *****
  • Posts: 553
on: Jul 28, 2018
What is the kinetic energy of a 0.160-kg ball thrown at 40.0 m/s (90.0 mph)?
 a. 54.0 J
  b. 64.0 J
  c. 108 J
  d. 128 J
  e.newton-meter.

Question 2

A system has an increase in internal energy of 60 J while 90 J was removed from the system by heat. How much work was involved during this process and was it done on the system or done on its environment?
 a. 30 J on the system
  c. 150 J on the system
  b. 30 J on the environment
  d. 150 J on the environment


enass

  • Sr. Member
  • ****
  • Posts: 380
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Methane combustion as an energy–yielding redox reaction. Methane combustion as an energy–yielding redox reaction.
Adenosine triphosphate (ATP) provides energy Adenosine triphosphate (ATP) provides energy
Rich Energy Deposits Rich Energy Deposits
Tummy rock to release energy blocks in the torso and head. Tummy rock to release energy blocks in the torso and head.
Global Energy Flow Global Energy Flow
Energy flows from the environment into living organisms, then back to the environment Energy flows from the environment into living organisms, then back to the environment
Video: Eczema

For a complete list of videos, visit our video library