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
jok3333 [9.3K]
3 years ago
12

What is halley's comet made of??

Physics
2 answers:
Nataly_w [17]3 years ago
8 0
It is made from fart
swat323 years ago
4 0
They are composed of rock, dust, ice<span> and frozen gases such as</span>carbon monoxide<span>, </span>carbon<span> dioxide, methane, and ammonia. Sometimes called dirty snowballs</span>
You might be interested in
Based on the simple blackbody radiation model described in class, answer the following question. The planets Mars and Venus have
Lera25 [3.4K]

Answer:

The extent of greenhouse effect on mars is G_m =  87 K  

Explanation:

From the question we are told that

     The albedo value of Mars is  A_1  = 0.15

      The albedo value of Mars is  A_2  = 0.15

       The surface temperature of Mars is  T_1 = 220 K

        The surface temperature of Venus is  T_2 = 700 K

          The distance of Mars from the sun is d_m = 2.28*10^8 \ km = 2.28*10^8* 1000 = 2.28*10^{11} \  m

          The distance of Venus from sun is  d_v = 1.08 *10^{8} \ km = 1.08 *10^{8} * 1000 =  1.08 *10^{11} \ m

       The radius of the sun is R = 7*10^{8} \ m

        The energy flux is   E = 6.28 * 10^{7} W/m^2

The solar constant for Mars is mathematically represented as

 

          T = [\frac{E R^2 (1- A_1)}{\sigma d_m} ]

Where \sigma is the Stefan's constant with a value  \sigma = 5.6*10^{-8} \ Wm^{-2} K^{-4}

So substituting values

         T = \frac{6.28 *10^{7} * (7*10^8)^2 * (1-0.15)}{(5.67 *10^{-8}) * (2.28 *10^{11})^2)}

          T = 307K

So the greenhouse effect on Mars is  

           G_m =  T -  T_1

           G_m =  307 - 220

          G_m =  87 K

   

3 0
4 years ago
Calculate the amount of work done if you use a 100N force to push a 50kg box 5m across the kitchen floor.
irinina [24]
So if the formula for work is force times displacement times cosine(theta), you'd plug in the numbers

100x5 (since there's no angle in the problem, cosine(theta) isn't used

100x5 = 500

So the answer would be B.

Hope that helps!
6 0
3 years ago
Read 2 more answers
Select the correct answer.
Eddi Din [679]

Answer:

I think it would be using a battery recet

Explanation:

7 0
3 years ago
An object is thrown downward from the top of a 175 meter building with an initial speed of 10m/s
Snezhnost [94]

Answer:

Explanation:

we can look for the final velocity of the object using the eqaution of motion as shown:

v² = u²+2gH

v is the  final velocity

u is the initial velocity = 10m/s

g is the acceleration due to gravity = 9.81m/s²

H is the height of the object = 175m

Subxtitute the given parameters inti the formula and get v:

v² = 10²+2(9.81)(175)

v² = 100+3433.5

v² = 3533.5

v = √3533.5

v = 59.44m/s

Hence the final velocity of the object is 59.44m/s

6 0
3 years ago
The mechanical advantage of a machine is always greater than 1. true or false
Alja [10]
True mechanical advantage of a machine is always greater than
6 0
3 years ago
Read 2 more answers
Other questions:
  • While driving north at 21 m/s during a rainstorm you notice that the rain makes an angle of 36° with the vertical. while drivin
    6·1 answer
  • What is the acceleration of the object?<br>______ m/s2​
    14·1 answer
  • If a car is going faster will the reaction time alter? Explain your answer please
    14·1 answer
  • How do you convert mass to weight and visa versa
    7·2 answers
  • Consider the substance represented by the heating curve. What is the MOST accurate conclusion can you draw about the vaporizatio
    7·1 answer
  • A car travels 300 km in the first 3 hours of a trip. Then it hits traffic and travels only 60 km during the last hour. What is t
    13·1 answer
  • The Endangered Species Act is a complete, comprehensive list of all known species in danger of
    5·1 answer
  • A rifle bullet with mass ma = 8.00 g strikes and embeds itself in a block with mass mb = 0.992 kg that rests on a frictionless,
    5·1 answer
  • A soccer ball kicked with a force of 12.5 N accelerates at 6.2 m/s’ to the right. What is the mass of the ball? Answer in units
    12·1 answer
  • 1-Calculate Req
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!