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
noname [10]
3 years ago
11

Need help 8th grade science test need help

Physics
2 answers:
jolli1 [7]3 years ago
7 0
ANSWER: d, average speed
Liula [17]3 years ago
7 0

Answer:

c or d

Explanation:

hopes this helps :)

You might be interested in
The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the
natulia [17]

Answer:

The value is   A =  2.80 *10^{-4} \  m^2

Explanation:

From the question we are told that

The  operating temperature is  T  =  2450 \  K

The emissivity is  e =  0.350

 The  power rating is  P  =  200 \  W

Generally the area is mathematically represented as

      A = \frac{P}{ e *  \sigma  *  T^2}

Where  \sigma is the Stefan Boltzmann constant  with value  

      \sigma  =  5.67 *10^{-8} \  W/m^2\cdot K^4

So

     A =  \frac{200}{0.350 *  5.67*10^{-8} *  2450^{4}}

     A =  2.80 *10^{-4} \  m^2

8 0
3 years ago
Describe how cool and warm air move in the atmosphere.
Anna [14]

Answer:

it is cool and warm

Explanation:

5 0
4 years ago
Magnetic field 0.02 mfrom a wire is 0.1 T. What is the magnitude of the magnetic field of 0.01 m from the same wire?
Gre4nikov [31]

Answer:

magnetic field from the same wire

6 0
3 years ago
Freeeee pointsssssss. i hope yall have a good as well!! Also, whats something you regret doing most?
leonid [27]

Answer:POGGERS thx i rl needed this have a good day also something a regret the most is searching up henhai i am now addicted

6 0
3 years ago
Read 2 more answers
Convert (a) 50 oF, (b) 80 oF, (c) 95 oF to Celsius
storchak [24]
I really need these points thx a lot
5 0
3 years ago
Other questions:
  • A proton moves at constant velocity in the direction, through a region in which there is an electric field and a magnetic field.
    10·1 answer
  • Calculate the reactance of a 0.5 F capacitor that is connected to a battery with peak voltage 2 V and angular frequency 200 radi
    9·1 answer
  • Wood is an example of a translucent material.<br> True<br> False
    15·1 answer
  • 1. What are the 3 spheres of Earth?
    12·1 answer
  • There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted s
    10·1 answer
  • A 60kg bicyclist (including the bicycle) is pedaling to the
    10·1 answer
  • A ball is thrown horizontally from a 16 m -high building with a speed of 2.0 m/s .
    8·1 answer
  • Light travels at a speed of 186,000 miles a second. The distance light travels in a year is:
    8·2 answers
  • When solving projectiles you will often get two possible times for solutions. Sometimes a time will be negative and can be rejec
    5·1 answer
  • We know that there is a relationship between work and mechanical energy change. Whenever work is done upon an object by an exter
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!