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
Vadim26 [7]
3 years ago
12

Juan is comparing the brightness of two lightbulbs. Which SI unit should he use?

Physics
1 answer:
My name is Ann [436]3 years ago
5 0
You will use candela for comparing.
You might be interested in
A 5.0-μC charge is placed at the 0 cm mark of a meter stick and a -4.0 μC charge is placed at the 50 cm mark. At what point on a
Maksim231197 [3]

Answer:

The distance from charge 5 μ C = 26.45 cm and the distance from - 4 μ C is 23.55 cm.

Explanation:

Given that

q₁ = 5 μ C

q₂ = - 4 μ C

The distance between charges = 50 cm

d= 50 cm

Lets take at distance x from the charge μ C ,the electrical field is zero.

That is why the distance from the charge - 4 μ C =  50 - x cm

We know that ,electric field is given as

E=K\dfrac{q}{r^2}

K\dfrac{5\ \mu}{x^2}=K\dfrac{4\mu }{(50-x)^2}\\\\\dfrac{5}{x^2}=\dfrac{4 }{(50-x)^2}\\\\\\5(50-x)^2=4x^2\\(50-x)^2=0.8x^2\\\\50-x =0.89x\\\ x=\dfrac{50}{1.89}\ cm\\\\\\x=26.45\ cm\\

Therefore the distance from charge 5 μ C = 26.45 cm and the distance from - 4 μ C is 23.55 cm.

3 0
3 years ago
If a trapezoidal channel has side slopes of 1:1, hydraulic depth is 5 feet, the bottom width is 8 feet, flow is 2,312 cubic feet
Evgesh-ka [11]

Answer:

S = \dfrac{1}{2.5}

Explanation:

given,

side slope = 1 : 1

hydraulic depth(y) = 5 ft

bottom width (b)= 8 ft

x = 1

Q = 2,312 ft³/s

n = 0.013

slope of channel = ?

R = \dfrac{A}{P}

R = \dfrac{y(b + xy)}{b+2y\sqrt{1+x^2}}

R = \dfrac{5(8+ 5)}{8+2\times 5\sqrt{1+1^2}}

R = 4.69 m

using manning's equation

Q = \dfrac{1}{n}AR^{2/3} S^{1/2}

2312= \dfrac{1}{0.013}\times (5(8+5))\times 4.69^{2/3} S^{1/2}

2312=14009.37\times S^{1/2}

S = 0.406

S = \dfrac{1}{2.5}

5 0
3 years ago
The global positioning system (GPS) uses electromagnetic waves sent between computer devices on Earth and satellites in space to
zhenek [66]

Answer:

first plz mark brarinlest

Explanation:

5 0
3 years ago
Read 2 more answers
Which EM wave is about the size of humans?
shutvik [7]
The Electromagnetic ave that is about the size of humans is : A typical micro waves have around 14 inches ( 1.1 meter) in height.
This is very similar to the height of human right before we hit puberty (around 9 - 10 years old)

8 0
3 years ago
Which of the following BEST summarizes the relationship between groups and culture and critical thinking?
slamgirl [31]

Answer:

Groups and culture helps in influencing our values,ethics and beliefs. This influence should always be questioned through the process of thinking critically.

This best summarizes the relationship between groups and culture and critical thinking.

6 0
3 years ago
Other questions:
  • If a particle with a charge of +4.3 × 10−18 C is attracted to another particle by a force of 6.5 × 10−8 N, what is the magnitude
    8·1 answer
  • What is the momentum of a dog of mass 14 kg that is running east with a
    12·1 answer
  • Which of the following would not increase the velocity of a sound wave in air? A. lowering the humidity of the air. B. increasin
    5·2 answers
  • A golfer gives a ball a maximum initial speed of 51.5 m/s. how far does it go
    10·1 answer
  • How would a small bar magnet be oriented when placed at position x?
    13·2 answers
  • If an object has a mass of 1417g and it is moved 47 meters in 90 seconds, how much power was used?
    12·1 answer
  • Assume that you have a meter stick balanced on a pivot, and pile of additional masses that you can hang on the meter stick.
    7·1 answer
  • What is a core sample?
    8·1 answer
  • Two objects perform the same task. One has thousands of moving parts while the other has no moving parts. What are they?.
    7·1 answer
  • If the loop the car is currently on has a radius of 26.0 m , find the minimum height h so that the car will not fall off the tra
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!