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
Alexeev081 [22]
3 years ago
10

Please do all of i will give you brainlest and thanks to best answer plz do it right

Physics
2 answers:
Sergeu [11.5K]3 years ago
8 0

Answer:

winter solstice i think

Explanation:

Vlad1618 [11]3 years ago
4 0

Answer:

a/ solar eclipse

Explanation:

because the moon is on the left side of earth

You might be interested in
Which statement best explains how isotopes can have different masses and still be the same element?
ss7ja [257]

Your list of choices is a very short list, and doesn't include any
correct explanation.

The mass of an atom is roughly the number of protons AND neutrons
in its nucleus, but the element only depends on how many protons are there. 

Different atoms of the same element may have different numbers of
neutrons, so their masses are different.  But they're the same element,
because they all have the same number of protons.

3 0
3 years ago
A car accelerate from 25m/s to 50m/s over a time of 10 second.what is acceleration of the car
Ann [662]
A=(vf-vi)/t
a=(50-25)/10
a=2.5m/s^2
5 0
3 years ago
What are symptoms of Gomorrah
marishachu [46]
Consumed by Fire and Brimstone would be 1 symptom of Gomorrah lol
5 0
3 years ago
Consider a Carnot heat-engine cycle executed in a closed system using 0.025 kg of steam as the working fluid. It is known that t
ArbitrLikvidat [17]

Answer:

The temperature of the steam during the heat rejection process is 42.5°C

Explanation:

Given the data in the question;

the maximum temperature T_H in the cycle is twice the minimum absolute temperature T_L in the cycle

T_H  = 0.5T_L

now, we find the efficiency of the Carnot cycle engine

η_{th = 1 - T_L/T_H

η_{th = 1 - T_L/0.5T_L

η_{th = 0.5

the efficiency of the Carnot heat engine can be expressed as;

η_{th = 1 - W_{net/Q_H

where W_{net is net work done, Q_H is is the heat supplied

we substitute

0.5 = 60 / Q_H

Q_H = 60 / 0.5

Q_H = 120 kJ

Now, we apply the first law of thermodynamics to the system

W_{net = Q_H - Q_L

60 = 120 -  Q_L

Q_L = 60 kJ

now, the amount of heat rejection per kg of steam is;

q_L = Q_L/m

we substitute

q_L = 60/0.025

q_L = 2400 kJ/kg

which means for 1 kilogram of conversion of saturated vapor to saturated liquid , it takes 2400 kJ/kg of heat ( enthalpy of vaporization)

q_L = h_{fg = 2400 kJ/kg

now, at  h_{fg  = 2400 kJ/kg from saturated water tables;

T_L = 40 + ( 45 - 40 ) ( \frac{2400-2406.0}{2394.0-2406.0}\\} )

T_L = 40 + (5) × (0.5)

T_L = 40 + 2.5

T_L = 42.5°C  

Therefore, The temperature of the steam during the heat rejection process is 42.5°C  

4 0
3 years ago
How does the interstellar medium affect our view of most of the galaxy?
Vsevolod [243]

Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.

(hope this helps) :)

8 0
3 years ago
Other questions:
  • It takes 120 minutes for a man to ride his bicycle up the road to Alpe d'Huez in France. The vertical height of the climb is 1,1
    5·1 answer
  • A 23.3-kg mass is attached to one end of a horizontal spring, with the other end of the spring fixed to a wall. The mass is pull
    5·1 answer
  • Your distance and direction from a reference point will define your
    6·1 answer
  • B. How can you tell where sugar enters the blood?
    13·1 answer
  • A charge of 4.5 × 10-5 C is placed in an electric field with a strength of 2.0 × 104 . If the charge is 0.030 m from the source
    14·1 answer
  • In the illustration, which two simple machines are being used to enable the student to reach the door?
    12·2 answers
  • Betty is six years old and often asks her parents many questions. Her parents respond to her questions however trivial they may
    15·2 answers
  • A lady bug is sitting on the bottom of a can while you twirl it overhead on a string that is 65.0
    13·1 answer
  • Anybody wanna help? (Picture Included?)
    15·1 answer
  • There are 13 boys are 4 girls in the jazz band find the ratio of the number of boys in the band to the total number of students
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!