Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PHY 1020 > Test 1 > Flashcards

Test 1 Flashcards

1
Q

Kinetic energy can be measured in

A

Calories

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

One watt is equivalent to

A

One joule / second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Power formula

A

Energy / Time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T / F watt is a unit of energy

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Kinetic energy of 1 gram metro is equal to energy how much TNT?

A

150 grams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Compared to TNT a meteor with same mass has how much greater energy?

A

165x greater

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Compared to kilogram of flashlight batteries, a kg of gasoline has how much more energy?

A

70 times more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Nucleus contains how much of the mass of an atom

A

99.99%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Alexander Litvineko was assassinated by

A

polonium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

1 Sievert = ? rem

A

100 rem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many people die from cancer

A

1 of 5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Big half life decays slower or faster than one with a small life

A

slower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Watch dials with radium glow because

A

radiation hits a phosphor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

An explosion occurs when

A

stored energy is suddenly converted to heat in a confined space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Energy definition

A

the ability to do work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Heat definition

A

something that raises the temperature of something else

17
Q

Energy in cookies vs. TNT

A

cookies have 8x more than TNT

*TNT releases energy much more quickly

18
Q

Calorie

A

1 Calorie = 1 watt hour

1 kWh = 1,000 calories

19
Q

Joule

A

1 calorie = 4,200 joules
1 kWh = 3.6 million joules
1 Watt = 1 joule / second

20
Q

1 Gram Energy measurements (calories)

A
  1. Uranium-235 = 20 million calories
  2. Gasoline = 10 calories
  3. Coal = 6 calories
21
Q

1 Gram Energy measurements (joules)

A
  1. Uranium-235 = 82 billion joules
  2. Gasoline = 42,000 joules
  3. Coal = 27,000 joules
22
Q

Gasoline vs. Car Battery

A
  1. battery contains 340x less energy per gram than gasoline
  2. Battery has 85% efficiency, gas is 20%
  3. Overall batter is 80x less than gas
23
Q

Hydrogen vs. Gas

A
  1. Hydrogen has 3x more energy than gas (in grams)

2. 3x less energy than gas (in gallons)

24
Q

TNT vs. Uranium

A

30 million times more energy

25
Q

Power Equation

A

Power = Energy / Time

26
Q

First Law of Thermodynamics

A

Energy that appears to be lost is actually just converted into heat

PHY 1020 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions