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
n200080 [17]
2 years ago
15

Q1. A fluorescent lamp takes in energy from the electricity supply at the rate of 18 joules each second. It gives out 3 joules o

f energy as light each second.
a. How much energy does the lamp give out each second?
Mathematics
1 answer:
Dmitrij [34]2 years ago
8 0

Answer:

15 joules

Step-by-step explanation:

SUBTRACT 3 FROM 18

18 JOULES-3 JOULES=15 JOULES

HOPE IT HELPS

You might be interested in
A pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. The height, h, of th
Gennadij [26K]
<h2>Explanation:</h2>

In this problem we have a pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. So the height, h, of the pumpkin at time t seconds after the launch can be modeled by the equation:

h(t) = -16t^2 + 84t + 20

So this is the equation of a parabola. The maximum of this parabola occurs at its vertex. So let's find this vertex:

\text{The x-value of the vertex is}: \\ \\ t=-\frac{b}{2a} \\ \\ \\ Where: \\ \\ a=-16 \\ \\ b=84 \\ \\ c=20 \\ \\ \\ t=-\frac{84}{2(-16)} \\ \\ t=-\frac{84}{-32} \\ \\ t=\frac{21}{8}=2.625 \\ \\ h(2.625)=-16(2.625)^2+84(2.625)+20 \\ \\ h(2.625)=-110.25+220.5+20 \\ \\ h(2.625)=130.25m

Finally, the maximum occurs at time 2.625 seconds when the height is 130.25m

8 0
3 years ago
Explain and find CD please
oksano4ka [1.4K]

Answer:

CD \approx5.29

Step-by-step explanation:

By geometric mean theorem:

CD=\sqrt {AD\times BD}  \\  \\ CD=\sqrt {7\times 4}  \\  \\ CD=\sqrt {28}  \\  \\ CD=5.29150262 \\  \\ CD \approx5.29

4 0
2 years ago
PZ PLZ PLZ HELP I DO NOT UNDERSTAND THIS KINDA OF STUFF IF U DONT KNOW DO NOT ANSWER IT I ACTUALLY NEED HELP NO LINKS PLZ PLZ
ivanzaharov [21]

Answer:

176

Step-by-step explanation:

11x11=121

12x11=132

9=20-11

16-9=7

11x16=176

Hope this helped you :D

And pls give me brainlist if you can

7 0
3 years ago
Read 2 more answers
college algebra - please help The half-life for thorium-227 is 18.72 days. The amount A (in grams) of thorium-227 after t days f
Andreyy89

Answer:

t= 24.75 days

Step-by-step explanation:

Here A(t) is the amount of the element that remains after some time. So they tell us that find the time it takes to basically have 4 grams remaining so A(t) = 4

4 = 10 * 0.5 ^ (t/18.72)

0.4= 0.5 ^ (t/18.72)

t= 24.75 days

Answer should make sense because half life is around 18 days which means to go from 10 g to 5g would be somewhere around 18 days but we are going to 4 g so it takes more days

6 0
3 years ago
What is 4 1/3= 1/3 x _/_ = 4 _/_
Oxana [17]
4 1/3 = 13/3 = 1/3 x 13/1 = 4 1/3
3 0
3 years ago
Other questions:
  • The math problem is-
    12·1 answer
  • Find the perimeter of a right triangle with a leg of 8 cm and a hypotenuse of 17 cm.
    8·2 answers
  • Lucy's goal for her cycling class at the gym is to burn 450 calories in one hour. The number of calories (c) she actually burns
    12·2 answers
  • Candice's mother gave her $75.38 to go to the store. Candice bought
    12·2 answers
  • 1/3x^2 by -2/9x divide it ​
    10·1 answer
  • PLEASE HELPP and no pictures please i can't see them on a school computer. Ill appreciate a step by step explanation than you! I
    12·2 answers
  • -<br> Factor Completely : 6w2 – 66w – 72
    8·2 answers
  • PLEASE HELP ASAP<br> I'LL MARK BRAINIEST
    15·1 answer
  • What to write it here
    6·1 answer
  • HELP PLEASE. Hector built a tent shaped like a rectangular pyramid. The volume of the tent is 56 cubic ft. The area of the base
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!